Author: "Ozerov, D" / Topic: high energy physics - experiment - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Ozerov, D"' showing total 99 results

Start Over Author "Ozerov, D" Topic high energy physics - experiment

99 results on '"Ozerov, D"'

1. Measurement of groomed event shape observables in deep-inelastic electron-proton scattering at HERA

Author: The H1 collaboration, Andreev, V., Arratia, M., Baghdasaryan, A., Baty, A., Begzsuren, K., Bolz, A., Boudry, V., Brandt, G., Britzger, D., Buniatyan, A., Bystritskaya, L., Campbell, A. J., Avila, K. B. Cantun, Cerny, K., Chekelian, V., Chen, Z., Contreras, J. G., Cvach, J., Dainton, J. B., Daum, K., Deshpande, A., Diaconu, C., Drees, A., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Gal, C., Gayler, J., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grindhammer, G., Haidt, D., Henderson, R. C. W., Hessler, J., Hladký, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacobs, P. M., Jacquet, M., Janssen, T., Jung, A. W., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Klest, H. T., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Lange, W., Laycock, P., Lee, S. H., Levonian, S., Li, W., Lin, J., Lipka, K., List, B., List, J., Lobodzinski, B., Long, O. R., Malinovski, E., Martyn, H. -U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, J., Mikocki, S., Mikuni, V. M., Mondal, M. M., Müller, K., Nachman, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nowak, G., Olsson, J. E., Ozerov, D., Park, S., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pitzl, D., Polifka, R., Preins, S., Radescu, V., Raicevic, N., Ravdandorj, T., Reichelt, D., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmookler, B. A., Schnell, G., Schoeffel, L., Schöning, A., Schumann, S., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Specka, A., Steder, M., Stella, B., Stöcker, L., Straumann, U., Sun, C., Sykora, T., Thompson, P. D., Acosta, F. Torales, Traynor, D., Tseepeldorj, B., Tu, Z., Tustin, G., Valkárová, A., Vallée, C., Van Mechelen, P., Wegener, D., Wünsch, E., Žáček, J., Zhang, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., and Zomer, F.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Experiment
Abstract: The H1 Collaboration at HERA reports the first measurement of groomed event shape observables in deep inelastic electron-proton scattering (DIS) at $\sqrt{s}=319$ GeV, using data recorded between the years 2003 and 2007 with an integrated luminosity of $351$ pb$^{-1}$. Event shapes provide incisive probes of perturbative and non-perturbative QCD. Grooming techniques have been used for jet measurements in hadronic collisions; this paper presents the first application of grooming to DIS data. The analysis is carried out in the Breit frame, utilizing the novel Centauro jet clustering algorithm that is designed for DIS event topologies. Events are required to have squared momentum-transfer $Q^2 > 150$ GeV$^2$ and inelasticity $ 0.2 < y < 0.7$. We report measurements of the production cross section of groomed event 1-jettiness and groomed invariant mass for several choices of grooming parameter. Monte Carlo model calculations and analytic calculations based on Soft Collinear Effective Theory are compared to the measurements., Comment: 32 pages, 17 tables, 7 figures, version as accepted by EPJ C
Published: 2024
Full Text: View/download PDF

2. Measurement of the 1-jettiness event shape observable in deep-inelastic electron-proton scattering at HERA

Author: The H1 collaboration, Andreev, V., Arratia, M., Baghdasaryan, A., Baty, A., Begzsuren, K., Bolz, A., Boudry, V., Brandt, G., Britzger, D., Buniatyan, A., Bystritskaya, L., Campbell, A. J., Avila, K. B. Cantun, Cerny, K., Chekelian, V., Chen, Z., Contreras, J. G., Cvach, J., Dainton, J. B., Daum, K., Deshpande, A., Diaconu, C., Drees, A., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Gal, C., Gayler, J., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grindhammer, G., Haidt, D., Henderson, R. C. W., Hessler, J., Hladký, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacobs, P. M., Jacquet, M., Janssen, T., Jung, A. W., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Klest, H. T., Kluth, S., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Lange, W., Laycock, P., Lee, S. H., Levonian, S., Li, W., Lin, J., Lipka, K., List, B., List, J., Lobodzinski, B., Long, O. R., Malinovski, E., Martyn, H. -U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, J., Mikocki, S., Mikuni, V. M., Mondal, M. M., Müller, K., Nachman, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nowak, G., Olsson, J. E., Ozerov, D., Park, S., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pitzl, D., Polifka, R., Preins, S., Radescu, V., Raicevic, N., Ravdandorj, T., Reichelt, D., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmookler, B. A., Schnell, G., Schoeffel, L., Schöning, A., Schumann, S., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Specka, A., Steder, M., Stella, B., Stöcker, L., Straumann, U., Sun, C., Sykora, T., Thompson, P. D., Acosta, F. Torales, Traynor, D., Tseepeldorj, B., Tu, Z., Tustin, G., Valkárová, A., Vallée, C., Van Mechelen, P., Wegener, D., Wünsch, E., Žáček, J., Zhang, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., and Zomer, F.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Experiment
Abstract: The H1 Collaboration reports the first measurement of the 1-jettiness event shape observable $\tau_1^b$ in neutral-current deep-inelastic electron-proton scattering (DIS). The observable $\tau_1^b$ is equivalent to a thrust observable defined in the Breit frame. The data sample was collected at the HERA $ep$ collider in the years 2003-2007 with center-of-mass energy of $\sqrt{s}=319\,\text{GeV}$, corresponding to an integrated luminosity of $351.1\,\text{pb}^{-1}$. Triple differential cross sections are provided as a function of $\tau_1^b$, event virtuality $Q^2$, and inelasticity $y$, in the kinematic region $Q^2>150\,\text{GeV}^{2}$. Single differential cross section are provided as a function of $\tau_1^b$ in a limited kinematic range. Double differential cross sections are measured, in contrast, integrated over $\tau_1^b$ and represent the inclusive neutral-current DIS cross section measured as a function of $Q^2$ and $y$. The data are compared to a variety of predictions and include classical and modern Monte Carlo event generators, predictions in fixed-order perturbative QCD where calculations up to $\mathcal{O}(\alpha_s^3)$ are available for $\tau_1^b$ or inclusive DIS, and resummed predictions at next-to-leading logarithmic accuracy matched to fixed order predictions at $\mathcal{O}(\alpha_s^2)$. These comparisons reveal sensitivity of the 1-jettiness observable to QCD parton shower and resummation effects, as well as the modeling of hadronization and fragmentation. Within their range of validity, the fixed-order predictions provide a good description of the data. Monte Carlo event generators are predictive over the full measured range and hence their underlying models and parameters can be constrained by comparing to the presented data., Comment: 45 pages, 38 tables, 13 figures
Published: 2024

3. Observation and differential cross section measurement of neutral current DIS events with an empty hemisphere in the Breit frame

Author: The H1 collaboration, Andreev, V., Arratia, M., Baghdasaryan, A., Baty, A., Begzsuren, K., Bolz, A., Boudry, V., Brandt, G., Britzger, D., Buniatyan, A., Bystritskaya, L., Campbell, A. J., Avila, K. B. Cantun, Cerny, K., Chekelian, V., Chen, Z., Contreras, J. G., Cvach, J., Dainton, J. B., Daum, K., Deshpande, A., Diaconu, C., Drees, A., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Gal, C., Gayler, J., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grindhammer, G., Haidt, D., Henderson, R. C. W., Hessler, J., Hladký, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacobs, P. M., Jacquet, M., Janssen, T., Jung, A. W., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Klest, H. T., Kluth, S., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Lange, W., Laycock, P., Lee, S. H., Levonian, S., Li, W., Lin, J., Lipka, K., List, B., List, J., Lobodzinski, B., Long, O. R., Malinovski, E., Martyn, H. -U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, J., Mikocki, S., Mikuni, V. M., Mondal, M. M., Müller, K., Nachman, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nowak, G., Olsson, J. E., Ozerov, D., Park, S., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pitzl, D., Polifka, R., Preins, S., Radescu, V., Raicevic, N., Ravdandorj, T., Reichelt, D., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmookler, B. A., Schnell, G., Schoeffel, L., Schöning, A., Schumann, S., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Specka, A., Steder, M., Stella, B., Stöcker, L., Straumann, U., Sun, C., Sykora, T., Thompson, P. D., Acosta, F. Torales, Traynor, D., Tseepeldorj, B., Tu, Z., Tustin, G., Valkárová, A., Vallée, C., Van Mechelen, P., Wegener, D., Wünsch, E., Žáček, J., Zhang, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., and Zomer, F.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology, Nuclear Experiment
Abstract: The Breit frame provides a natural frame to analyze lepton-proton scattering events. In this reference frame, the parton model hard interactions between a quark and an exchanged boson defines the coordinate system such that the struck quark is back-scattered along the virtual photon momentum direction. In Quantum Chromodynamics (QCD), higher order perturbative or non-perturbative effects can change this picture drastically. As Bjorken-$x$ decreases below one half, a rather peculiar event signature is predicted with increasing probability, where no radiation is present in one of the two Breit-frame hemispheres and all emissions are to be found in the other hemisphere. At higher orders in $\alpha_s$ or in the presence of soft QCD effects, predictions of the rate of these events are far from trivial, and that motivates measurements with real data. We report on the first observation of the empty current hemisphere events in electron-proton collisions at the HERA collider using data recorded with the H1 detector at a center-of-mass energy of 319 GeV. The fraction of inclusive neutral-current DIS events with an empty hemisphere is found to be $0.0112 \pm 3.9\,\%_\text{stat} \pm 4.5\,\%_\text{syst} \pm 1.6\,\%_\text{mod}$ in the selected kinematic region of $150< Q^2<1500$ GeV$^2$ and inelasticity $0.14< y<0.7$. The data sample corresponds to an integrated luminosity of 351.1 pb$^{-1}$, sufficient to enable differential cross section measurements of these events. The results show an enhanced discriminating power at lower Bjorken-$x$ among different Monte Carlo event generator predictions., Comment: 13 pages, 5 figures, 2 Tables. This version as accepted for publication
Published: 2024
Full Text: View/download PDF

4. Unbinned Deep Learning Jet Substructure Measurement in High $Q^2$ ep collisions at HERA

Author: The H1 collaboration, Andreev, V., Arratia, M., Baghdasaryan, A., Baty, A., Begzsuren, K., Bolz, A., Boudry, V., Brandt, G., Britzger, D., Buniatyan, A., Bystritskaya, L., Campbell, A. J., Avila, K. B. Cantun, Cerny, K., Chekelian, V., Chen, Z., Contreras, J. G., Cvach, J., Dainton, J. B., Daum, K., Deshpande, A., Diaconu, C., Drees, A., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Gal, C., Gayler, J., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grindhammer, G., Haidt, D., Henderson, R. C. W., Hessler, J., Hladký, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacobs, P. M., Jacquet, M., Janssen, T., Jung, A. W., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Klest, H. T., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Lange, W., Laycock, P., Lee, S. H., Levonian, S., Li, W., Lin, J., Lipka, K., List, B., List, J., Lobodzinski, B., Long, O. R., Malinovski, E., Martyn, H. -U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, J., Mikocki, S., Mikuni, V. M., Mondal, M. M., Müller, K., Nachman, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nowak, G., Olsson, J. E., Ozerov, D., Park, S., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pitzl, D., Polifka, R., Preins, S., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmookler, B. A., Schnell, G., Schoeffel, L., Schöning, A., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Specka, A., Steder, M., Stella, B., Straumann, U., Sun, C., Sykora, T., Thompson, P. D., Acosta, F. Torales, Traynor, D., Tseepeldorj, B., Tu, Z., Tustin, G., Valkárová, A., Vallée, C., Van Mechelen, P., Wegener, D., Wünsch, E., Žáček, J., Zhang, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., and Zomer, F.
Subjects: High Energy Physics - Experiment
Abstract: The radiation pattern within high energy quark- and gluon-initiated jets (jet substructure) is used extensively as a precision probe of the strong force as well as an environment for optimizing event generators with numerous applications in high energy particle and nuclear physics. Looking at electron-proton collisions is of particular interest as many of the complications present at hadron colliders are absent. A detailed study of modern jet substructure observables, jet angularities, in electron-proton collisions is presented using data recorded using the H1 detector at HERA. The measurement is unbinned and multi-dimensional, using machine learning to correct for detector effects. All of the available reconstructed object information of the respective jets is interpreted by a graph neural network, achieving superior precision on a selected set of jet angularities. Training these networks was enabled by the use of a large number of GPUs in the Perlmutter supercomputer at Berkeley Lab. The particle jets are reconstructed in the laboratory frame, using the $k_{\mathrm{T}}$ jet clustering algorithm. Results are reported at high transverse momentum transfer $Q^2>150$ GeV${}^2$, and inelasticity $0.2 < y < 0.7$. The analysis is also performed in sub-regions of $Q^2$, thus probing scale dependencies of the substructure variables. The data are compared with a variety of predictions and point towards possible improvements of such models., Comment: 25 pages, 10 figures, 8 tables, version accepted by Physics Letters B
Published: 2023
Full Text: View/download PDF

5. Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions

Author: H1, Collaborations, ZEUS, Abt, I., Aggarwal, R., Andreev, V., Arratia, M., Aushev, V., Baghdasaryan, A., Baty, A., Begzsuren, K., Behnke, O., Belousov, A., Bertolin, A., Bloch, I., Boudry, V., Brandt, G., Brock, I., Brook, N. H., Brugnera, R., Bruni, A., Buniatyan, A., Bussey, P. J., Bystritskaya, L., Caldwell, A., Campbell, A. J., Avila, K. B. Cantun, Catterall, C. D., Cerny, K., Chekelian, V., Chen, Z., Chwastowski, J., Ciborowski, J., Ciesielski, R., Contreras, J. G., Cooper-Sarkar, A. M., Corradi, M., Mendez, L. Cunqueiro, Currie, J., Cvach, J., Dainton, J. B., Daum, K., Dementiev, R. K., Deshpande, A., Diaconu, C., Dusini, S., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Ferrando, J., Fleischer, M., Fomenko, A., Foster, B., Gal, C., Gallo, E., Gangadharan, D., Garfagnini, A., Gayler, J., Ridder, A. Gehrmann-De, Gehrmann, T., Geiser, A., Gladilin, L. K., Glover, E. W. N., Goerlich, L., Gogitidze, N., Golubkov, Yu. A., Gouzevitch, M., Grab, C., Greenshaw, T., Grindhammer, G., Grzelak, G., Gwenlan, C., Haidt, D., Henderson, R. C. W., Hladký, J., Hochman, D., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Huss, A., Jacobs, P. M., Jacquet, M., Janssen, T., Jomhari, N. Z., Jung, A. W., Jung, H., Kadenko, I., Kapichine, M., Karshon, U., Katzy, J., Kaur, P., Kiesling, C., Klanner, R., Klein, M., Klein, U., Kleinwort, C., Klest, H. T., Kogler, R., Korzhavina, I. A., Kostka, P., Kovalchuk, N., Kretzschmar, J., Krücker, D., Krüger, K., Kuze, M., Landon, M. P. J., Lange, W., Laycock, P., Lee, S. H., Levchenko, B. B., Levonian, S., Levy, A., Li, W., Lin, J., Lipka, K., List, B., List, J., Lobodzinski, B., Löhr, B., Lohrmann, E., Long, O. R., Longhin, A., Lorkowski, F., Lukina, O. Yu., Makarenko, I., Malinovski, E., Malka, J., Martyn, H. -U., Masciocchi, S., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, J., Mikocki, S., Mikuni, V. M., Mondal, M. M., Morgan, T., Morozov, A., Mueller, K., Nachman, B., Nagano, K., Nam, J. D., Naumann, Th., Newman, P. R., Niebuhr, C., Niehues, J., Nowak, G., Olsson, J. E., Onishchuk, Yu., Ozerov, D., Park, S., Pascaud, C., Patel, G. D., Paul, E., Perez, E., Petrukhin, A., Picuric, I., Pidhurskyi, I., Pires, J., Pitzl, D., Polifka, R., Polini, A., Preins, S., Przybycień, M., Quintero, A., Rabbertz, K., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Ruspa, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmookler, B. A., Schneekloth, U., Schoeffel, L., Schöning, A., Schörner-Sadenius, T., Sefkow, F., Selyuzhenkov, I., Shchedrolosiev, M., Shcheglova, L. M., Shushkevich, S., Skillicorn, I. O., Słomiński, W., Solano, A., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Stanco, L., Steder, M., Stefaniuk, N., Stella, B., Straumann, U., Sun, C., Surrow, B., Sutton, M. R., Sykora, T., Thompson, P. D., Tokushuku, K., Traynor, D., Tseepeldorj, B., Tu, Z., Turkot, O., Tymieniecka, T., Valkárová, A., Vallée, C., Van Mechelen, P., Verbytskyi, A., Abdullah, W. A. T. Wan, Wegener, D., Wichmann, K., Wing, M., Wünsch, E., Yamada, S., Yamazaki, Y., Žáček, J., Żarnecki, A. F., Zenaiev, O., Zhang, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., and Zomer, F.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic $ep$ scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of $\alpha_s(M_Z^2)$ and and the PDFs, was performed with the result $\alpha_s(M_Z^2) = 0.1156 \pm 0.0011~{\rm (exp)}~ ^{+0.0001}_{-0.0002}~ {\rm (model}$ ${\rm +~parameterisation)}~ \pm 0.0029~{\rm (scale)}$. The PDF sets of HERAPDF2.0Jets NNLO were determined with separate fits using two fixed values of $\alpha_s(M_Z^2)$, $\alpha_s(M_Z^2)=0.1155$ and $0.118$, since the latter value was already chosen for the published HERAPDF2.0 NNLO analysis based on HERA inclusive DIS data only. The different sets of PDFs are presented, evaluated and compared. The consistency of the PDFs determined with and without the jet data demonstrates the consistency of HERA inclusive and jet-production cross-section data. The inclusion of the jet data reduced the uncertainty on the gluon PDF. Predictions based on the PDFs of HERAPDF2.0Jets NNLO give an excellent description of the jet-production data used as input., Comment: 43 pages, 24 figures, to be submitted to Eur. Phys. J. C
Published: 2021

6. Measurement of lepton-jet correlation in deep-inelastic scattering with the H1 detector using machine learning for unfolding

Author: H1 Collaboration, Andreev, V., Arratia, M., Baghdasaryan, A., Baty, A., Begzsuren, K., Belousov, A., Bolz, A., Boudry, V., Brandt, G., Britzger, D., Buniatyan, A., Bystritskaya, L., Campbell, A. J., Avila, K. B. Cantun, Cerny, K., Chekelian, V., Chen, Z., Contreras, J. G., Mendez, L. Cunqueiro, Cvach, J., Dainton, J. B., Daum, K., Deshpande, A., Diaconu, C., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Gal, C., Gayler, J., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grindhammer, G., Haidt, D., Henderson, R. C. W., Hessler, J., Hladký, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacobs, P. M., Jacquet, M., Janssen, T., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Klest, H. T., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Lange, W., Laycock, P., Lee, S. H., Levonian, S., Lin, J., Lipka, K., List, B., List, J., Li, W., Lobodzinski, B., Malinovski, E., Martyn, H. -U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, J., Mikocki, S., Mondal, M. M., Morozov, A., Müller, K., Nachman, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nowak, G., Olsson, J. E., Ozerov, D., Park, S., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pitzl, D., Polifka, R., Preins, S., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmookler, B. A., Schoeffel, L., Schöning, A., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Straumann, U., Sun, C., Sykora, T., Thompson, P. D., Traynor, D., Tseepeldorj, B., Tu, Z., Valkárová, A., Vallée, C., Van Mechelen, P., Wegener, D., Wünsch, E., Žáček, J., Zhang, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., and Zomer, F.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: The first measurement of lepton-jet momentum imbalance and azimuthal correlation in lepton-proton scattering at high momentum transfer is presented. These data, taken with the H1 detector at HERA, are corrected for detector effects using an unbinned machine learning algorithm OmniFold, which considers eight observables simultaneously in this first application. The unfolded cross sections are compared to calculations performed within the context of collinear or transverse-momentum-dependent (TMD) factorization in Quantum Chromodynamics (QCD) as well as Monte Carlo event generators. The measurement probes a wide range of QCD phenomena, including TMD parton distribution functions and their evolution with energy in so far unexplored kinematic regions., Comment: 17 pages, 7 figures, 4 tables, version accepted by PRL
Published: 2021

7. Determination of the strong coupling constant $\alpha_s(M_Z)$ in next-to-next-to-leading order QCD using H1 jet cross section measurements

Author: H1 collaboration, Andreev, V., Baghdasaryan, A., Begzsuren, K., Belousov, A., Bertone, V., Bolz, A., Boudry, V., Brandt, G., Brisson, V., Britzger, D., Buniatyan, A., Bylinkin, A., Bystritskaya, L., Campbell, A. J., Avila, K. B. Cantun, Cerny, K., Chekelian, V., Contreras, J. G., Cvach, J., Currie, J., Dainton, J. B., Daum, K., Diaconu, C., Dobre, M., Dodonov, V., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Gehrmann, T., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Grebenyuk, A., Greenshaw, T., Grindhammer, G., Gwenlan, C., Haidt, D., Henderson, R. C. W., Hladky, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Huss, A., Jacquet, M., Janssen, X., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Lange, W., Laycock, P., Lebedev, A., Levonian, S., Lipka, K., List, B., List, J., Lobodzinski, B., Malinovski, E., Martyn, H. -U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Mikocki, S., Morozov, A., Müller, K., Naumann, Th., Newman, P. R., Niebuhr, C., Niehues, J., Nowak, G., Olsson, J. E., Ozerov, D., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pirumov, H., Pitzl, D., Plačakytė, R., Polifka, R., Rabbertz, K., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Šálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schoeffel, L., Schöning, A., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Straumann, U., Sutton, M. R., Sykora, T., Thompson, P. D., Traynor, D., Truöl, P., Tsakov, I., Tseepeldorj, B., Valkárová, A., Vallée, C., Van Mechelen, P., Vazdik, Y., Wegener, D., Wünsch, E., Žáček, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., and Zomer, F.
Subjects: High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract: The strong coupling constant $\alpha_s(M_Z)$ is determined from inclusive jet and dijet cross sections in neutral-current deep-inelastic $ep$ scattering (DIS) measured at HERA by the H1 collaboration using next-to-next-to-leading order (NNLO) QCD predictions. The dependence of the NNLO predictions and of the resulting value of $\alpha_s(M_Z)$ at the $Z$-boson mass $m_Z$ are studied as a function of the choice of the renormalisation and factorisation scales. Using inclusive jet and dijet data together, the strong coupling constant is determined to be $\alpha_s(M_Z)=0.1166\,(19)_{\rm exp}\,(24)_{\rm th}$. Complementary, $\alpha_s(M_Z)$ is determined together with parton distribution functions of the proton (PDFs) from jet and inclusive DIS data measured by the H1 experiment. The value $\alpha_s(M_Z)=0.1147\,(25)_{\rm tot}$ obtained is consistent with the determination from jet data alone. The impact of the jet data on the PDFs is studied. The running of the strong coupling is tested at different values of the renormalisation scale and the results are found to be in agreement with expectations., Comment: 45 pages, 17 figures, with changes discussed in an erratum submitted to EPJ C
Published: 2017

8. Unbinned Deep Learning Jet Substructure Measurement in High $Q^2$ ep collisions at HERA

Author: Andreev, V., Arratia, M., Baghdasaryan, A., Baty, A., Begzsuren, K., Bolz, A., Boudry, V., Brandt, G., Britzger, D., Buniatyan, A., Bystritskaya, L., Campbell, A.J., Cantun Avila, K.B., Cerny, K., Chekelian, V., Chen, Z., Contreras, J.G., Cunqueiro Mendez, L., Cvach, J., Dainton, J.B., Daum, K., Deshpande, A., Diaconu, C., Drees, A., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Gal, C., Gayler, J., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grindhammer, G., Haidt, D., Henderson, R.C.W., Hessler, J., Hladký, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacobs, P.M., Jacquet, M., Janssen, T., Jung, A.W., Kapichine, M., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Klest, H.T., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M.P.J., Lange, W., Laycock, P., Lee, S.H., Levonian, S., Li, W., Lin, J., Lipka, K., List, B., List, J., Lobodzinski, B., Long, O.R., Malinovski, E., Martyn, H.-U., Maxfield, S.J., Mehta, A., Meyer, A.B., Meyer, J., Mikocki, S., Mikuni, V.M., Mondal, M.M., Morozov, A., Müller, K., Nachman, B., Naumann, Th., Newman, P.R., Niebuhr, C., Nowak, G., Olsson, J.E., Ozerov, D., Park, S., Pascaud, C., Patel, G.D., Perez, E., Petrukhin, A., Picuric, I., Pitzl, D., Polifka, R., Preins, S., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Sankey, D.P.C., Sauter, M., Sauvan, E., Schmitt, S., Schmookler, B.A., Schnell, G., Schoeffel, L., Schöning, A., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Straumann, U., Sun, C., Sykora, T., Thompson, P.D., Acosta, F. Torales, Traynor, D., Tseepeldorj, B., Tu, Z., Tustin, G., Valkárová, A., Vallée, C., Van Mechelen, P., Wegener, D., Wünsch, E., Žáček, J., Zhang, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., Zomer, F., Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), and H1
Subjects: particle, energy, neural network, hep-ex, momentum transfer, FOS: Physical sciences, electron p, interaction, GeV, High Energy Physics - Experiment, DESY HERA Stor, High Energy Physics - Experiment (hep-ex), machine learning, energy, high, nuclear physics, network, strong coupling, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], structure, hadron, higher-dimensional, Monte Carlo, transverse momentum, high, Particle Physics - Experiment, Berkeley Lab
Abstract: The radiation pattern within high energy quark- and gluon-initiated jets (jet substructure) is used extensively as a precision probe of the strong force as well as an environment for optimizing event generators with numerous applications in high energy particle and nuclear physics. Looking at electron-proton collisions is of particular interest as many of the complications present at hadron colliders are absent. A detailed study of modern jet substructure observables, jet angularities, in electron-proton collisions is presented using data recorded using the H1 detector at HERA. The measurement is unbinned and multi-dimensional, using machine learning to correct for detector effects. All of the available reconstructed object information of the respective jets is interpreted by a graph neural network, achieving superior precision on a selected set of jet angularities. Training these networks was enabled by the use of a large number of GPUs in the Perlmutter supercomputer at Berkeley Lab. The particle jets are reconstructed in the laboratory frame, using the $k_{\mathrm{T}}$ jet clustering algorithm. Results are reported at high transverse momentum transfer $Q^2>150$ GeV${}^2$, and inelasticity $0.2 < y < 0.7$. The analysis is also performed in sub-regions of $Q^2$, thus probing scale dependencies of the substructure variables. The data are compared with a variety of predictions and point towards possible improvements of such models., 30 pages, 10 figures, 8 tables, corrected authorlist
Published: 2023
Full Text: View/download PDF

9. Impact of jet-production data on the next-to-next-to-leading-order determination of HERAPDF2.0 parton distributions

Author: Abt, I., Aggarwal, R., Bertolin, A., Kostka, P., Kovalchuk, N., Kretzschmar, J., Krücker, D., Krüger, K., Kuze, M., Landon, M. P. J., Lange, W., Laycock, P., Lee, S. H., Bloch, I., Levchenko, B. B., Levonian, S., Levy, A., Li, W., Lin, J., Lipka, K., List, B., List, J., Lobodzinski, B., Löhr, B., Boudry, V., Lohrmann, E., Long, O. R., Longhin, A., Lorkowski, F., Lukina, O. Yu., Makarenko, I., Malinovski, E., Malka, J., Martyn, H.-U., Masciocchi, S., Brandt, G., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, J., Mikocki, S., Mikuni, V. M., Mondal, M. M., Morgan, T., Morozov, A., Mueller, K., Brock, I., Nachman, B., Nagano, K., Nam, J. D., Naumann, Th., Newman, P. R., Niebuhr, C., Niehues, J., Nowak, G., Olsson, J. E., Onishchuk, Yu., Brook, N. H., Ozerov, D., Park, S., Pascaud, C., Patel, G. D., Paul, E., Perez, E., Petrukhin, A., Picuric, I., Pidhurskyi, I., Pires, J., Brugnera, R., Pitzl, D., Polifka, R., Polini, A., Preins, S., Przybycień, M., Quintero, A., Rabbertz, K., Radescu, V., Raicevic, N., Ravdandorj, T., Bruni, A., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Ruspa, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Buniatyan, A., Schmitt, S., Schmookler, B. A., Schneekloth, U., Schoeffel, L., Schöning, A., Schörner-Sadenius, T., Sefkow, F., Selyuzhenkov, I., Shchedrolosiev, M., Shcheglova, L. M., Bussey, P. J., Shushkevich, S., Skillicorn, I. O., Słomiński, W., Solano, A., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Stanco, L., Andreev, V., Bystritskaya, L., Steder, M., Stefaniuk, N., Stella, B., Straumann, U., Sun, C., Surrow, B., Sutton, M. R., Sykora, T., Thompson, P. D., Tokushuku, K., Caldwell, A., Traynor, D., Tseepeldorj, B., Tu, Z., Turkot, O., Tymieniecka, T., Valkárová, A., Vallée, C., Van Mechelen, P., Verbytskyi, A., Wan Abdullah, W. A. T., Campbell, A. J., Wegener, D., Wichmann, K., Wing, M., Wünsch, E., Yamada, S., Yamazaki, Y., Žáček, J., Żarnecki, A. F., Zenaiev, O., Zhang, J., Avila, K. B. Cantun, Zhang, Z., Žlebčík, R., Zohrabyan, H., Zomer, F., H1 Collaboration, ZEUS Collaboration, Catterall, C. D., Cerny, K., Chekelian, V., Chen, Z., Chwastowski, J., Ciborowski, J., Arratia, M., Ciesielski, R., Contreras, J. G., Cooper-Sarkar, A. M., Corradi, M., Mendez, L. Cunqueiro, Currie, J., Cvach, J., Dainton, J. B., Daum, K., Dementiev, R. K., Aushev, V., Deshpande, A., Diaconu, C., Dusini, S., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Ferrando, J., Baghdasaryan, A., Fleischer, M., Fomenko, A., Foster, B., Gal, C., Gallo, E., Gangadharan, D., Garfagnini, A., Gayler, J., Ridder, A. Gehrmann-De, Gehrmann, T., Baty, A., Geiser, A., Gladilin, L. K., Glover, E. W. N., Goerlich, L., Gogitidze, N., Golubkov, Yu. A., Gouzevitch, M., Grab, C., Greenshaw, T., Grindhammer, G., Begzsuren, K., Grzelak, G., Gwenlan, C., Haidt, D., Henderson, R. C. W., Hladký, J., Hochman, D., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Behnke, O., Huss, A., Jacobs, P. M., Jacquet, M., Janssen, T., Jomhari, N. Z., Jung, A. W., Jung, H., Kadenko, I., Kapichine, M., Karshon, U., Belousov, A., Katzy, J., Kaur, P., Kiesling, C., Klanner, R., Klein, M., Klein, U., Kleinwort, C., Klest, H. T., Kogler, R., Korzhavina, I. A., Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), H1, ZEUS, H1 Collaboration, ZEUS Collaboration, and Collaborations, ZEUS
Subjects: perturbation theory [quantum chromodynamics], data analysis method, Physics and Astronomy (miscellaneous), HERA, DEEP-INELASTIC SCATTERING, CROSS-SECTIONS, EP SCATTERING, QCD ANALYSIS, HERA COMBINATION, FOS: Physical sciences, parton: distribution function, CROSS-SECTIONS, High Energy Physics - Experiment, DEEP-INELASTIC SCATTERING, HERA, ZEUS, Jet production, Parton distribution functions, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), statistical analysis, deep inelastic scattering, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, QCD ANALYSIS, quantum chromodynamics: perturbation theory, Engineering (miscellaneous), Particle Physics - Phenomenology, HERA COMBINATION, hep-ex, Physics, higher-order: 2, High Energy Physics::Phenomenology, parametrization, hep-ph, ZEUS, gluon, Parton distribution functions, production [jet], 2 [higher-order], High Energy Physics - Phenomenology, DESY HERA Stor, EP SCATTERING, jet: production, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], H1, High Energy Physics::Experiment, Jet production, distribution function [parton], Particle Physics - Experiment
Abstract: The European physical journal / C 82(3), 243 (2022). doi:10.1140/epjc/s10052-022-10083-9, The HERAPDF2.0 ensemble of parton distribution functions (PDFs) was introduced in 2015. The final stage is presented, a next-to-next-to-leading-order (NNLO) analysis of the HERA data on inclusive deep inelastic ep scattering together with jet data as published by the H1 and ZEUS collaborations. A perturbative QCD fit, simultaneously of $\alpha _s(M_Z^2)$ and the PDFs, was performed with the result $\alpha _s(M_Z^2)= 0.1156 \pm 0.0011~\mathrm{(exp)}~ ^{+0.0001}_{-0.0002}~ \mathrm{(model}\mathrm{+ parameterisation)}~ \pm 0.0029~\mathrm{(scale)}$. The PDF sets of HERAPDF2.0Jets NNLO were determined with separate fits using two fixed values of $\alpha _s(M_Z^2)$, $\alpha _s(M_Z^2)=0.1155$ and 0.118, since the latter value was already chosen for the published HERAPDF2.0 NNLO analysis based on HERA inclusive DIS data only. The different sets of PDFs are presented, evaluated and compared. The consistency of the PDFs determined with and without the jet data demonstrates the consistency of HERA inclusive and jet-production cross-section data. The inclusion of the jet data reduced the uncertainty on the gluon PDF. Predictions based on the PDFs of HERAPDF2.0Jets NNLO give an excellent description of the jet-production data used as input., Published by Springer, Heidelberg
Published: 2022
Full Text: View/download PDF

10. Measurement of Lepton-Jet Correlation in Deep-Inelastic Scattering with the H1 Detector Using Machine Learning for Unfolding

Author: H1 Collaboration, Andreev, V., Arratia, M., Baghdasaryan, A., Baty, A., Begzsuren, K., Belousov, A., Bolz, A., Boudry, V., Brandt, G., Britzger, D., Buniatyan, A., Bystritskaya, L., Campbell, A. J., Avila, K. B. Cantun, Cerny, K., Chekelian, V., Chen, Z., Contreras, J. G., Mendez, L. Cunqueiro, Cvach, J., Dainton, J. B., Daum, K., Deshpande, A., Diaconu, C., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Gal, C., Gayler, J., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grindhammer, G., Haidt, D., Henderson, R. C. W., Hessler, J., Hladký, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacobs, P. M., Jacquet, M., Janssen, T., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Klest, H. T., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Lange, W., Laycock, P., Lee, S. H., Levonian, S., Lin, J., Lipka, K., List, B., List, J., Li, W., Lobodzinski, B., Malinovski, E., Martyn, H. -U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, J., Mikocki, S., Mondal, M. M., Morozov, A., Müller, K., Nachman, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nowak, G., Olsson, J. E., Ozerov, D., Park, S., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pitzl, D., Polifka, R., Preins, S., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmookler, B. A., Schoeffel, L., Schöning, A., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Straumann, U., Sun, C., Sykora, T., Thompson, P. D., Traynor, D., Tseepeldorj, B., Tu, Z., Valkárová, A., Vallée, C., Van Mechelen, P., Wegener, D., Wünsch, E., Žáček, J., Zhang, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., Zomer, F., Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique des 2 Infinis de Lyon (IP2I Lyon), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique des 2 Infinis Irène Joliot-Curie (IJCLab), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), H1, H1 Collaboration, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: correlation: two-particle, electron p: deep inelastic scattering, data analysis method, neural network, FOS: Physical sciences, General Physics and Astronomy, collinear, parton: distribution function, transverse momentum dependence, High Energy Physics - Experiment, energy dependence, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), statistical analysis, factorization, quantum chromodynamics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, deep inelastic scattering [positron p], two-particle [correlation], Particle Physics - Phenomenology, hep-ex, angular correlation, positron p: deep inelastic scattering, Physics, high [momentum transfer], High Energy Physics::Phenomenology, hep-ph, Monte Carlo [numerical calculations], High Energy Physics - Phenomenology, DESY HERA Stor, kinematics, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], deep inelastic scattering [electron p], H1, High Energy Physics::Experiment, distribution function [parton], numerical calculations: Monte Carlo, Particle Physics - Experiment, momentum transfer: high, experimental results
Abstract: The first measurement of lepton-jet momentum imbalance and azimuthal correlation in lepton-proton scattering at high momentum transfer is presented. These data, taken with the H1 detector at HERA, are corrected for detector effects using an unbinned machine learning algorithm (multifold), which considers eight observables simultaneously in this first application. The unfolded cross sections are compared with calculations performed within the context of collinear or transverse-momentum-dependent factorization in quantum chromodynamics as well as Monte Carlo event generators., Physical Review Letters, 128 (13), ISSN:0031-9007, ISSN:1079-7114
Published: 2022
Full Text: View/download PDF

11. Measurement of Exclusive $\pi^{+}\pi^{-}$ and $\rho^0$ Meson Photoproduction at HERA

Author: Andreev, V., Baghdasaryan, A., Bystritskaya, L., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmookler, B. A., Schoeffel, L., Campbell, A. J., Schöning, A., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Cantun Avila, K. B., Straumann, U., Sykora, T., Thompson, P. D., Traynor, D., Truöl, P., Tseepeldorj, B., Tu, Z., Valkárová, A., Vallée, C., Van Mechelen, P., Cerny, K., Wegener, D., Wünsch, E., Žáček, J., Zhang, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., Zomer, F., H1 Collaboration, Chekelian, V., Chen, Z., Contreras, J. G., Cvach, J., Dainton, J. B., Daum, K., Baty, A., Deshpande, A., Diaconu, C., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Begzsuren, K., Gal, C., Gayler, J., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Grebenyuk, A., Greenshaw, T., Grindhammer, G., Haidt, D., Belousov, A., Henderson, R. C. W., Hladky, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacquet, M., Janssen, X., Jung, A. W., Jung, H., Bolz, A., Kapichine, M., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Boudry, V., Landon, M. P. J., Lange, W., Laycock, P., Lebedev, A., Levonian, S., Lipka, K., List, B., List, J., Li, W., Lobodzinski, B., Brandt, G., Malinovski, E., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Mikocki, S., Mondal, M. M., Morozov, A., Britzger, D., Müller, K., Naumann, Th., Newman, P. R., Niebuhr, C., Nowak, G., Olsson, J. E., Ozerov, D., Park, S., Pascaud, C., Patel, G. D., Buniatyan, A., Perez, E., Petrukhin, A., Picuric, I., Pitzl, D., Polifka, R., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Département de Physique des Particules (ex SPP) (DPP), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: mass [meson], exclusive reaction, data analysis method, M009M0P, production [resonance], dissociation [p], +pi%2B+pi-+p%22">photon p --> pi+ pi- p, Regge, measured [cross section], production [lead], model [photon], High Energy Physics - Experiment, electron p: scattering, phase space, photoproduction [meson], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, dissociation [photon], decay [pi], Nuclear Experiment, Monte Carlo, Particle Physics - Phenomenology, M001M, hep-ex, Regge poles, scattering, hep-ph, scattering [electron p], cross section: measured, rho(770): photoproduction, p: dissociation, High Energy Physics - Phenomenology, DESY HERA Stor, pair production [pi], [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], H1, slope, M009W0P, High Energy Physics::Experiment, photoproduction [rho(770)], pi+ pi, pi: pair production, Particle Physics - Experiment, experimental results, resonance: production
Abstract: Exclusive photoproduction of $\rho^0(770)$ mesons is studied using the H1 detector at the $ep$ collider HERA. A sample of about 900000 events is used to measure single- and double-differential cross sections for the reaction $\gamma p \to \pi^{+}\pi^{-}Y$. Reactions where the proton stays intact (${m_Y{=}m_p}$) are statistically separated from those where the proton dissociates to a low-mass hadronic system ($m_p{, Comment: 74 pages, 20 figures, 23 tables, accepted by EPJC. Figure numbering updated. Ancillary material has been updated
Published: 2020
Full Text: View/download PDF

12. Determination of electroweak parameters in polarised deep-inelastic scattering at HERA

Author: Spiesberger, H., Baghdasaryan, A., Bylinkin, A., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schoeffel, L., Schöning, A., Sefkow, F., Shushkevich, S., Soloviev, Y., Bystritskaya, L., Sopicki, P., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Straumann, U., Sykora, T., Thompson, P. D., Campbell, A. J., Traynor, D., Truöl, P., Tsakov, I., Tseepeldorj, B., Valkarova, A., Vallee, C., Van Mechelen, P., Vazdik, Y., Wegener, D., Wünsch, E., Cantun Avila, K. B., Zacek, J., Zhang, Z., Zlebcik, R., Zohrabyan, H., Zomer, F., Andreev, V., H1 Collaboration, Cerny, K., Chekelian, V., Contreras, J. G., Cvach, J., Dainton, J. B., Daum, K., Begzsuren, K., Diaconu, C., Dobre, M., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Fleischer, M., Fomenko, A., Belousov, A., Gayler, J., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Grebenyuk, A., Greenshaw, T., Grindhammer, G., Haidt, D., Henderson, R. C. W., Bolz, A., Hladky, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacquet, M., Janssen, X., Jung, A. W., Jung, H., Kapichine, M., Boudry, V., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Brandt, G., Lange, W., Laycock, P., Lebedev, A., Levonian, S., Lipka, K., List, B., List, J., Lobodzinski, B., Malinovski, E., Martyn, H.-U., Brisson, V., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Mikocki, S., Morozov, A., Müller, K., Naumann, Th., Newman, P. R., Britzger, D., Niebuhr, C., Nowak, G., Olsson, J. E., Ozerov, D., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pitzl, D., Buniatyan, A., Polifka, R., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Département de Physique des Particules (ex SPP) (DPP), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), H1 Collaboration, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: electron p: deep inelastic scattering, neutral current, polarization: longitudinal, S044GDV, FOS: Physical sciences, lcsh:Astrophysics, lepton: polarized beam, vector [coupling], Computer Science::Digital Libraries, W: mass: measured, High Energy Physics - Experiment, charged current, High Energy Physics - Experiment (hep-ex), axial-vector [coupling], S044M, High Energy Physics - Phenomenology (hep-ph), lcsh:QB460-466, quantum chromodynamics, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], S044GUA, ddc:530, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, deep inelastic scattering [positron p], longitudinal [polarization], coupling: vector, electroweak interaction, positron p: deep inelastic scattering, new physics, Physics, High Energy Physics::Phenomenology, S044GDA, weak coupling, polarized beam [lepton], coupling: axial-vector, High Energy Physics - Phenomenology, DESY HERA Stor, scale dependence, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], deep inelastic scattering [electron p], H1, S044GUV, lcsh:QC770-798, High Energy Physics::Experiment, mass: measured [W], S043M, experimental results
Abstract: The parameters of the electroweak theory are determined in a combined electroweak and QCD analysis using all deep-inelastic $e^+p$ and $e^-p$ neutral current and charged current scattering cross sections published by the H1 Collaboration, including data with longitudinally polarised lepton beams. Various fits to Standard Model parameters in the on-shell scheme are performed. The mass of the $W$ boson is determined as $m(W)=80.520\pm 0.115$ GeV. The axial-vector and vector couplings of the light quarks to the $Z$ boson are also determined. Both results improve the precision of previous H1 determinations based on HERA-I data by about a factor of two. Possible scale dependence of the weak coupling parameters in both neutral and charged current interactions beyond the Standard Model is also studied. All results are found to be consistent with the Standard Model expectations., 36 pages, 8 figures, 18 tables, revised version accepted by EPJC
Published: 2019
Full Text: View/download PDF

13. Combination and QCD analysis of charm and beauty production cross-section measurements in deep inelastic ep scattering at HERA

Author: Abramowicz , H., Abt , I., Adamczyk , L., Adamus , M., Aggarwal , R., Andreev , V., Antonelli , S., Aushev , V., Baghdasaryan , A., Begzsuren , K., Behnke , O., Behrens , U., Belousov , A., Bertolin , A., Bloch , I., Bolz , A., Boudry , V., Brandt , G., Brisson , V., Britzger , D., Brock , I., Brook , N.H., Brugnera , R., Bruni , A., Buniatyan , A., Bussey , P.J., Bylinkin , A., Bystritskaya , L., Caldwell , A., Campbell , A.J., Cantun Avila , K.B., Capua , M., Catterall , C.D., Cerny , K., Chekelian , V., Chwastowski , J., Ciborowski , J., Ciesielski , R., Contreras , J.G., Cooper-Sarkar , A.M., Corradi , M., Cvach , J., Dainton , J.B., Daum , K., Dementiev , R.K., Devenish , R.C.E., Diaconu , C., Dobre , M., Dusini , S., Eckerlin , G., Egli , S., Elsen , E., Favart , L., Fedotov , A., Feltesse , J., Fleischer , M., Fomenko , A., Foster , B., Gallo , E., Garfagnini , A., Gayler , J., Geiser , A., Gizhko , A., Gladilin , L.K., Goerlich , L., Gogitidze , N., Golubkov , Yu.A., Gouzevitch , M., Grab , C., Grebenyuk , A., Greenshaw , T., Grindhammer , G., Grzelak , G., Gwenlan , C., Haidt , D., Henderson , R.C.W., Hladkỳ , J., Hlushchenko , O., Hochman , D., Hoffmann , D., Horisberger , R., Hreus , T., Huber , F., Ibrahim , Z.A., Iga , Y., Jacquet , M., Janssen , X., Jomhari , N.Z., Jung , A.W., Jung , H., Kadenko , I., Kananov , S., Kapichine , M., Karshon , U., Katzy , J., Kaur , P., Kiesling , C., Kisielewska , D., Klanner , R., Klein , M., Klein , U., Kleinwort , C., Kogler , R., Korzhavina , I.A., Kostka , P., Kotański , A., Kovalchuk , N., Kowalski , H., Kretzschmar , J., Krücker , D., Krüger , K., Krupa , B., Kuprash , O., Kuze , M., Landon , M.P.J., Lange , W., Laycock , P., Lebedev , A., Levchenko , B.B., Levonian , S., Levy , A., Libov , V., Lipka , K., Lisovyi , M., List , B., List , J., Lobodzinski , B., Löhr , B., Lohrmann , E., Longhin , A., Lukina , O.Yu., Makarenko , I., Malinovski , E., Malka , J., Martyn , H.-U., Masciocchi , S., Maxfield , S.J., Mehta , A., Meyer , A.B., Meyer , H., Meyer , J., Mikocki , S., Mohamad Idris , F., Mohammad Nasir , N., Morozov , A., Müller , K., Myronenko , V., Nagano , K., Nam , J.D., Naumann , Th., Newman , P.R., Nicassio , M., Niebuhr , C., Nowak , G., Olsson , J.E., Onderwaater , J., Onishchuk , Yu., Ozerov , D., Pascaud , C., Patel , G.D., Paul , E., Perez , E., Perlański , W., Petrukhin , A., Picuric , I., Pirumov , H., Pitzl , D., Pokrovskiy , N.S., Polifka , R., Polini , A., Przybycień , M., Radescu , V., Raicevic , N., Ravdandorj , T., Reimer , P., Rizvi , E., Robmann , P., Roosen , R., Rostovtsev , A., Rotaru , M., Ruspa , M., Šálek , D., Sankey , D.P.C., Sauter , M., Sauvan , E., Saxon , D.H., Schioppa , M., Schmitt , S., Schneekloth , U., Schoeffel , L., Schöning , A., Schörner-Sadenius , T., Sefkow , F., Selyuzhenkov , I., Shcheglova , L.M., Shushkevich , S., Shyrma , Yu., Skillicorn , I.O., Słomiński , W., Solano , A., Soloviev , Y., Sopicki , P., South , D., Spaskov , V., Specka , A., Stanco , L., Steder , M., Stefaniuk , N., Stella , B., Stern , A., Stopa , P., Straumann , U., Surrow , B., Sykora , T., Sztuk-Dambietz , J., Tassi , E., Thompson , P.D., Tokushuku , K., Tomaszewska , J., Traynor , D., Truöl , P., Tsakov , I., Tseepeldorj , B., Tsurugai , T., Turcato , M., Turkot , O., Tymieniecka , T., Valkárová , A., Vallée , C., Van Mechelen , P., Vazdik , Y., Verbytskyi , A., Wan Abdullah , W.A.T., Wegener , D., Wichmann , K., Wing , M., Wünsch , E., Yamada , S., Yamazaki , Y., Žáček , J., Żarnecki , A.F., Zawiejski , L., Zenaiev , O., Zhang , Z., Zhautykov , B.O., Žlebčík , R., Zohrabyan , H., Zomer , F., As a result , a, The combined cross sections are significantly more precise than any of the individual input datasets for charm as well as for beauty production.This is illustrated in figure ̊ef{fig:data-32GeV , where the charm and beauty, 18$ GeV , For, calculations provide a better description of the $x_̊m Bj}$ shape of the measured charm cross sections for $Q^2< 32$ GeV , Both, No such cut is applied to the charm and beauty data , since the relevant, At the initial Qcd evolution scale\footnote{In the Ffns this scale is decoupled from the charm-quark mass.}μ_̊m f , 0}^2, In addition , μ_̊m, In figure ̊ef{fig:fittedpdfs , the PDFs, The partial χ^2$ of the heavy-flavour data improves to $98$ for $79$ degrees of freedom , The total, H1 Collaboration, ZEUS Collaboration, Laboratoire Leprince-Ringuet ( LLR ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de l'Accélérateur Linéaire ( LAL ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Centre de Physique des Particules de Marseille ( CPPM ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Aix Marseille Université ( AMU ), Département de Physique des Particules (ex SPP) ( DPP ), Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Institut de Physique Nucléaire de Lyon ( IPNL ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire d'Annecy de Physique des Particules ( LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -Centre National de la Recherche Scientifique ( CNRS ), H1, ZEUS, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), and Département de Physique des Particules (ex SPP) (DPhP)
Subjects: Physics and Astronomy (miscellaneous), measured [cross section], 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), bottom: mass, High Energy Physics - Phenomenology (hep-ph), bottom: production, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Charm (quantum number), Q005M, Physics, Quantum chromodynamics, Beauty production, higher-order: 1, Perturbative QCD, HERA, deep inelastic scattering: inclusive reaction, Bjorken [scaling], High Energy Physics - Phenomenology, Charm production, kinematics, production [bottom], H1, Production (computer science), Deep inelastic scattering, 1 [higher-order], perturbation theory [quantum chromodynamics], Particle physics, data analysis method, FOS: Physical sciences, lcsh:Astrophysics, mass [bottom], scaling: Bjorken, inclusive reaction [deep inelastic scattering], statistical analysis, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], lcsh:QB460-466, 0103 physical sciences, lcsh:Nuclear and particle physics. Atomic energy. Radioactivity, ddc:530, quantum chromodynamics: perturbation theory, Engineering (miscellaneous), 010306 general physics, 010308 nuclear & particles physics, Scattering, High Energy Physics::Phenomenology, Order (ring theory), charm: production, ZEUS, cross section: measured, production [charm], QCD, charm: mass, mass [charm], [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], HERA, ZEUS, Deep inelastic scattering, QCD, Charm production, Beauty production, lcsh:QC770-798, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, Q004M, experimental results
Abstract: The European physical journal / C Particles and fields C 78(6), 473 (2018). doi:10.1140/epjc/s10052-018-5848-3, Measurements of open charm and beauty production cross sections in deep inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections are obtained in the kinematic range of negative four-momentum transfer squared of the photon $2.5~\hbox {GeV}^2\le Q^2 \le 2000\, \hbox {GeV}^2$ and Bjorken scaling variable $3 \cdot 10^{-5} \le x_\mathrm{Bj} \le 5 \cdot 10^{-2}$ . The combination method accounts for the correlations of the statistical and systematic uncertainties among the different datasets. Perturbative QCD calculations are compared to the combined data. A next-to-leading order QCD analysis is performed using these data together with the combined inclusive deep inelastic scattering cross sections from HERA. The running charm- and beauty-quark masses are determined as $m_c(m_c) = 1.290^{+0.046-0.041} \mathrm{(exp/fit)}$ ${}^{+0.062-0.014} \mathrm{(model)}$ ${}^{+0.003-0.031} \mathrm{(parameterisation)}$ GeV and $m_b(m_b) = 4.049^{+0.104-0.109} \mathrm{(exp/fit)}$ ${}^{+0.090-0.032} \mathrm{(model)}$ ${}^{+0.001-0.031} \mathrm{(parameterisation)}~\mathrm{GeV}$ ., Published by Springer24875, Heidelberg
Published: 2018
Full Text: View/download PDF

14. Measurement of $D^{*}$ production in diffractive deep inelastic scattering at HERA

Author: H1 Collaboration, Andreev, V., Baghdasaryan, A., Begzsuren, K., Belousov, A., Bolz, A., Boudry, V., Brandt, G., Brisson, V., Britzger, D., Buniatyan, A., Bylinkin, A., Bystritskaya, L., Campbell, A. J., Cantun Avila, Karla Beatriz, Cerny, K., Chekelian, V., Contreras, J. G., Cvach, J., Dainton, J. B., Daum, K., Diaconu, C., Dobre, M., Dodonov, V., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Ferencei, J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Grebenyuk, A., Greenshaw, T., Grindhammer, G., Haidt, D., Henderson, R. C. W., Hladký, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacquet, M., Jansová, M., Janssen, X., Jung, A., Jung, H., Kapichine, M., Katzy, J., Kiesling, C., Klein, M., Kleinwort, C., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Lange, W., Laycock, P., Lebedev, A., Levonian, S., Lipka, K., List, B., List, J., Lobodzinski, B., Malinovski, E., Martyn, Hans-Ulrich, Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Mikocki, S., Morozov, A., Müller, K., Naumann, Th., Newman, P. R., Niebuhr, C., Nowak, G., Olsson, J. E., Ozerov, D., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pirumov, H., Pitzl, D., Plačakytė, R., Polifka, R., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Šálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schoeffel, L., Schöning, A., Sefkow, F., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Straumann, U., Sykora, T., Thompson, P. D., Traynor, D., Truöl, P., Tsakov, I., Tseepeldorj, B., Valkárová, A., Vallée, C., Van Mechelen, P., Vazdik, Y., Wegener, D., Wünsch, E., Žáček, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., Zomer, F., Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and H1
Subjects: fusion, gap [rapidity], density [parton], measured [channel cross section], Nuclear Theory, diffraction, Physics::Optics, measured [cross section], D*(2010): hadronic decay, High Energy Physics - Experiment, collinear [factorization], High Energy Physics - Experiment (hep-ex), +K+2pi%22">D*(2010) --> K 2pi, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], deep inelastic scattering [positron p], Nuclear Experiment, production [meson], positron p: deep inelastic scattering, higher-order: 1, perturbation theory: higher-order, DESY HERA Stor, kinematics, H1, parton: density, channel cross section: measured, 1 [higher-order], electron p: deep inelastic scattering, perturbation theory [quantum chromodynamics], diffraction: dissociation, FOS: Physical sciences, quark, deep inelastic scattering, quantum chromodynamics, ddc:530, 319 GeV-cms, quantum chromodynamics: perturbation theory, hadronic decay [D*(2010)], leptoproduction [D*(2010)], factorization: collinear, High Energy Physics::Phenomenology, cross section: measured, rapidity: gap, higher-order [perturbation theory], deep inelastic scattering [electron p], High Energy Physics::Experiment, charm, D*(2010): leptoproduction, dissociation [diffraction], experimental results
Abstract: Measurements of $D^{*}(2010)$ meson production in diffractive deep inelastic scattering $(5, Comment: 28 pages, 8 figures, updated tables and figures, accepted by EPJ C
Published: 2017
Full Text: View/download PDF

15. Determination of the strong coupling constant $\alpha_s(m_Z)$ in next-to-next-to-leading order QCD using H1 jet cross section measurements

Author: Andreev, V., Baghdasaryan, A., Buniatyan, A., Plačakytė, R., Polifka, R., Rabbertz, K., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Bylinkin, A., Rostovtsev, A., Rotaru, M., Šálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, Stefan, Schoeffel, L., Schöning, A., Sefkow, F., Bystritskaya, L., Shushkevich, S., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Straumann, U., Sutton, M. R., Campbell, Alan, Sykora, T., Thompson, P. D., Traynor, D., Truöl, P., Tsakov, I., Tseepeldorj, B., Valkárová, A., Vallée, C., Van Mechelen, P., Vazdik, Y., Cantun Avila, K. B., Wegener, D., Wünsch, E., Žáček, J., Zhang, Z., Žlebčík, R., Zohrabyan, H., Zomer, F., H1 Collaboration, Cerny, K., Chekelian, V., Contreras, J. G., Cvach, J., Currie, J., Begzsuren, K., Dainton, J. B., Daum, K., Diaconu, C., Dobre, M., Dodonov, V., Eckerlin, G., Egli, S., Elsen, E., Favart, L., Fedotov, A., Belousov, A., Feltesse, J., Fleischer, Manfred, Fomenko, A., Gabathuler, E., Gayler, J., Gehrmann, T., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gouzevitch, M., Bertone, V., Grab, C., Grebenyuk, A., Greenshaw, T., Grindhammer, G., Gwenlan, C., Haidt, D., Henderson, R. C. W., Hladkỳ, J., Hoffmann, D., Horisberger, R., Bolz, A., Hreus, T., Huber, F., Huss, A., Jacquet, M., Janssen, X., Jung, A. W., Jung, Hannes, Kapichine, M., Katzy, J., Kiesling, C., Boudry, V., Klein, Max, Kleinwort, C., Kogler, R., Kostka, P., Kretzschmar, J., Krücker, D., Krüger, K., Landon, M. P. J., Lange, W., Laycock, P., Brandt, G., Lebedev, A., Levonian, S., Lipka, K., List, B., List, J., Lobodzinski, B., Malinovski, E., Martyn, H.-U., Maxfield, S. J., Mehta, A., Brisson, V., Meyer, Andreas, Meyer, H., Meyer, J., Mikocki, S., Morozov, A., Müller, K., Naumann, Th., Newman, P. R., Niebuhr, C., Niehues, J., Britzger, D., Nowak, G., Olsson, J. E., Ozerov, D., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pirumov, H., Pitzl, D., Laboratoire Leprince-Ringuet ( LLR ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -École polytechnique ( X ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire de l'Accélérateur Linéaire ( LAL ), Université Paris-Sud - Paris 11 ( UP11 ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Centre de Physique des Particules de Marseille ( CPPM ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Aix Marseille Université ( AMU ), Département de Physique des Particules (ex SPP) ( DPP ), Institut de Recherches sur les lois Fondamentales de l'Univers ( IRFU ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ) -Université Paris-Saclay, Institut de Physique Nucléaire de Lyon ( IPNL ), Université Claude Bernard Lyon 1 ( UCBL ), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Centre National de la Recherche Scientifique ( CNRS ), Laboratoire d'Annecy de Physique des Particules ( LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules ), Institut National de Physique Nucléaire et de Physique des Particules du CNRS ( IN2P3 ) -Université Savoie Mont Blanc ( USMB [Université de Savoie] [Université de Chambéry] ) -Centre National de la Recherche Scientifique ( CNRS ), H1, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département de Physique des Particules (ex SPP) (DPhP), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Département de Physique des Particules (ex SPP) (DPP), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), and Centre National de la Recherche Scientifique (CNRS)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: electron p: deep inelastic scattering, neutral current, parton: distribution function, High Energy Physics - Experiment, jet: electroproduction, strong interaction: coupling constant, [ PHYS.HEXP ] Physics [physics]/High Energy Physics - Experiment [hep-ex], strong coupling, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], quantum chromodynamics: perturbation theory, Particle Physics - Phenomenology, hep-ex, positron p: deep inelastic scattering, scale: renormalization, High Energy Physics::Phenomenology, higher-order: 2, perturbation theory: higher-order, hep-ph, dijet, High Energy Physics - Phenomenology, DESY HERA Stor, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], scale: factorization, p: distribution function, H1, jet: pair production, High Energy Physics::Experiment, [ PHYS.HPHE ] Physics [physics]/High Energy Physics - Phenomenology [hep-ph], channel cross section: measured, Particle Physics - Experiment, experimental results
Abstract: The strong coupling constant $\alpha_s(M_Z)$ is determined from inclusive jet and dijet cross sections in neutral-current deep-inelastic $ep$ scattering (DIS) measured at HERA by the H1 collaboration using next-to-next-to-leading order (NNLO) QCD predictions. The dependence of the NNLO predictions and of the resulting value of $\alpha_s(M_Z)$ at the $Z$-boson mass $m_Z$ are studied as a function of the choice of the renormalisation and factorisation scales. Using inclusive jet and dijet data together, the strong coupling constant is determined to be $\alpha_s(M_Z)=0.1166\,(19)_{\rm exp}\,(24)_{\rm th}$. Complementary, $\alpha_s(M_Z)$ is determined together with parton distribution functions of the proton (PDFs) from jet and inclusive DIS data measured by the H1 experiment. The value $\alpha_s(M_Z)=0.1147\,(25)_{\rm tot}$ obtained is consistent with the determination from jet data alone. The impact of the jet data on the PDFs is studied. The running of the strong coupling is tested at different values of the renormalisation scale and the results are found to be in agreement with expectations., Comment: 45 pages, 17 figures, with changes discussed in an erratum submitted to EPJ C
Published: 2017
Full Text: View/download PDF

16. Measurement of dijet electroproduction at small jet separation

Author: Adloff, C, Andreev, V, Andrieu, B, Anthonis, T, Arkadov, V, Astvatsatourov, A, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Berndt, T, Bizot, JC, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burrage, A, Buschhorn, G, Bystritskaya, L, Campbell, AJ, Cao, J, Caron, S, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coppens, YR, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dingfelder, J, Dixon, P, Dodonov, V, Dowell, JD, Droutskoi, A, Dubak, A, Duprel, C, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Erdmann, W, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferron, S, Fleischer, M, Fleming, YH, Flugge, G, Fomenko, A, Foresti, L, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Gerlich, C, Ghazaryan, S, Goerlich, L, Gogitidze, N, Goldberg, M, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hildebrandt, M, Hilgers, M, Hiller, KH, Hladky, J, Hoting, P, Hoffmann, D, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Janssen, X, Jemanov, V, Jonsson, L, Johnson, C, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Kjellberg, P, Klein, M, Kleinwort, C, Kluge, T, Knies, G, Koblitz, B, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Koutouev, R, Koutov, A, Krehbiel, H, Kroseberg, J, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Laycock, P, Lebailly, E, Lebedev, A, Leissner, B, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, List, B, Lobodzinska, E, Lobodzinski, B, Loginov, A, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Meer, D, Mehta, A, Meier, K, Meyer, AB, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Patel, GD, Peez, M, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Risler, C, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleper, P, Schmidt, D, Schmidt, S, Schmitt, S, Schneider, M, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Schwanenberger, C, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Sirois, Y, Sloan, T, Smirnov, P, Soloviev, Y, South, D, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Stella, B, Stiewe, J, Straumann, U, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Tsurin, I, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Urban, M, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vassiliev, S, Vazdik, Y, Vichnevski, A, Wacker, K, Wallny, R, Waugh, B, Weber, G, Weber, M, Wegener, D, Werner, C, Werner, M, Werner, N, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wunsch, E, Wyatt, AC, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1 Collaboration, and Damoiseaux, Magali
Subjects: Physics, Quantum chromodynamics, Particle physics, Physics and Astronomy (miscellaneous), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, Scattering, Monte Carlo method, High Energy Physics::Phenomenology, FOS: Physical sciences, Perturbative QCD, Parton, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Matrix (mathematics), 0103 physical sciences, Range (statistics), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010303 astronomy & astrophysics, Engineering (miscellaneous)
Abstract: Deep-inelastic scattering data in the range 150 < Q^2 < 35000 GeV^2 are used to investigate the minimum jet separation necessary to allow accurate description of the rate of dijet production using next-to-leading order perturbative QCD calculations. The required jet separation is found to be small, allowing about 1/3 of DIS data to be classified as dijet, as opposed to approximately 1/10 with more typical jet analyses. A number of precision measurements made using this dijet sample are well described by the calculations. The data are also described by the combination of leading order matrix elements and parton showers, as implemented in the QCD based Monte Carlo model RAPGAP., 18 pages, 4 figures, 4 tables
Published: 2016

17. Combination of Measurements of Inclusive Deep Inelastic $e^{\pm}p$ Scattering Cross Sections and QCD Analysis of HERA Data

Author: Abramowicz, H., Abt, I., Begzsuren, K., Hreus, T., Huber, F., Ibrahim, Z. A., Iga, Y., Ishitsuka, M., Iudin, A., Jacquet, M., Janssen, X., Januschek, F., Jomhari, N. Z., Behnke, O., Jung, H., Kadenko, I., Kananov, S., Kapichine, M., Karshon, U., Kaur, M., Kaur, P., Kiesling, C., Kisielewska, D., Klanner, R., Behrendt Dubak, A., Klein, M., Klein, U., Kleinwort, C., Kogler, R., Kondrashova, N., Kononenko, O., Korol, Ie., Korzhavina, I. A., Kostka, P., Kotanski, A., Behrens, U., Kotz, U., Kovalchuk, N., Kowalski, H., Kretzschmar, J., Kruger, K., Krupa, B., Kuprash, O., Kuze, M., Landon, M. P. J., Lange, W., Belousov, A., Laycock, P., Lebedev, A., Levchenko, B. B., Levonian, S., Levy, A., Libov, V., Limentani, S., Lipka, K., Lisovyi, M., List, B., Belov, P., List, J., Lobodzinska, E., Lobodzinski, B., Lohr, B., Lohrmann, E., Longhin, A., Lontkovskyi, D., Lukina, O. Yu., Makarenko, I., Malinovski, E., Bertolin, A., Malka, J., Martyn, H. U., Maxfield, S. J., Mehta, A., Mergelmeyer, S., Meyer, A. B., Meyer, H., Meyer, Joachim, Mikocki, S., Idris, F. Mohamad, Bloch, I., Morozov, A., Nasir, N. Muhammad, Muller, K., Myronenko, V., Nagano, K., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nobe, T., Boos, E. G., Notz, D., Nowak, G., Nowak, R. J., Olsson, J. E., Onishchuk, Yu., Ozerov, D., Pahl, P., Pascaud, C., Patel, G. D., Paul, E., Borras, K., Perez, E., Perlanski, W., Petrukhin, A., Picuric, I., Pirumov, H., Pitzl, D., Pokorny, B., Pokrovskiy, N. S., Polifka, R., Przybycien, M., Adamczyk, L., Boudry, V., Radescu, V., Raicevic, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roloff, P., Roosen, R., Rostovtsev, A., Rotaru, M., Brandt, G., Rubinsky, I., Rusakov, S., Ruspa, M., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Saxon, D. H., Schioppa, M., Schmidke, W. B., Brisson, V., Schmitt, S., Schneekloth, U., Schoeffel, L., Schoning, A., Schorner-Sadenius, T., Sefkow, F., Shcheglova, L. M., Shevchenko, R., Shkola, O., Shushkevich, S., Britzger, D., Shyrma, Yu., Singh, I., Skillicorn, I. O., Slominski, W., Solano, A., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Brock, I., Stanco, L., Steder, M., Stefaniuk, N., Stella, B., Stern, A., Stopa, P., Straumann, U., Sykora, T., Sztuk-Dambietz, J., Szuba, D., Brook, N. H., Szuba, J., Tassi, E., Thompson, P. D., Tokushuku, K., Tomaszewska, J., Traynor, D., Trofymov, A., Truol, P., Tsakov, I., Tseepeldorj, B., Brugnera, R., Tsurugai, T., Turcato, M., Turkot, O., Turnau, J., Tymieniecka, T., Valkarova, A., Vallee, C., Van Mechelen, P., Vazdik, Y., Verbytskyi, A., Bruni, A., Viazlo, O., Walczak, R., Wan Abdullah, W. A. T., Wegener, D., Wichmann, K., Wing, M., Wolf, G., Wunsch, E., Yamada, S., Yamazaki, Y., Buniatyan, A., Zacek, J., Zakharchuk, N., Zarnecki, A. F., Zawiejski, L., Zenaiev, O., Zhang, Z., Zhautykov, B. O., Zhmak, N., Zlebcik, R., Zohrabyan, H., Bussey, P. J., Zomer, F., Zotkin, D. S., H1 Collaboration, ZEUS Collaboration, Adamus, M., Bylinkin, A., Bystritskaya, L., Caldwell, A., Campbell, A. J., Cantun Avila, K. B., Capua, M., Catterall, C. D., Ceccopieri, F., Cerny, K., Chekelian, V., Andreev, V., Chwastowski, J., Ciborowski, J., Ciesielski, R., Contreras, J. G., Cooper-Sarkar, A. M., Corradi, M., Corriveau, F., Cvach, J., Dainton, J. B., Daum, K., Antonelli, S., Dementiev, R. K., Devenish, R. C. E., Diaconu, C., Dobre, M., Dodonov, V., Dolinska, G., Dusini, S., Eckerlin, G., Egli, S., Elsen, E., Antunovic, B., Favart, L., Fedotov, A., Feltesse, J., Ferencei, J., Figiel, J., Fleischer, M., Fomenko, A., Foster, B., Gabathuler, E., Gach, G., Aushev, V., Gallo, E., Garfagnini, A., Gayler, J., Geiser, A., Ghazaryan, S., Gizhko, A., Gladilin, L. K., Goerlich, L., Gogitidze, N., Golubkov, Yu. A., Aushev, Y., Gouzevitch, M., Grab, C., Grebenyuk, A., Grebenyuk, J., Greenshaw, T., Gregor, I., Grindhammer, G., Grzelak, G., Gueta, O., Guzik, M., Baghdasaryan, A., Gwenlan, C., Haidt, D., Hain, W., Henderson, R. C. W., Henkenjohann, P., Hladky, J., Hochman, D., Hoffmann, D., Hori, R., Horisberger, R., Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), H1, Zeus, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th], Nuclear Theory, FOS: Physical sciences, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], energy [beam], charged current, High Energy Physics - Experiment, Nuclear Theory (nucl-th), High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), deep inelastic scattering, quantum chromodynamics, strong coupling, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, violation [scaling], Nuclear Experiment (nucl-ex), Nuclear Experiment, Bjorken, electroweak interaction, scattering, High Energy Physics::Phenomenology, coupling constant, parametrization, ZEUS, gluon, beam [electron], production [jet], beam [p], DESY HERA Stor, High Energy Physics - Phenomenology, correlation, [PHYS.HPHE]Physics [physics]/High Energy Physics - Phenomenology [hep-ph], High Energy Physics::Experiment, distribution function [parton], charm, polarization [beam], hadronization, Particle Physics - Experiment
Abstract: A combination is presented of all inclusive deep inelastic cross sections previously published by the H1 and ZEUS collaborations at HERA for neutral and charged current $e^{\pm}p$ scattering for zero beam polarisation. The data were taken at proton beam energies of 920, 820, 575 and 460 GeV and an electron beam energy of 27.5 GeV. The data correspond to an integrated luminosity of about 1 fb$^{-1}$ and span six orders of magnitude in negative four-momentum-transfer squared, $Q^2$, and Bjorken $x$. The correlations of the systematic uncertainties were evaluated and taken into account for the combination. The combined cross sections were input to QCD analyses at leading order, next-to-leading order and at next-to-next-to-leading order, providing a new set of parton distribution functions, called HERAPDF2.0. In addition to the experimental uncertainties, model and parameterisation uncertainties were assessed for these parton distribution functions. Variants of HERAPDF2.0 with an alternative gluon parameterisation, HERAPDF2.0AG, and using fixed-flavour-number schemes, HERAPDF2.0FF, are presented. The analysis was extended by including HERA data on charm and jet production, resulting in the variant HERAPDF2.0Jets. The inclusion of jet-production cross sections made a simultaneous determination of these parton distributions and the strong coupling constant possible, resulting in $\alpha_s(M_Z)=0.1183 \pm 0.0009 {\rm(exp)} \pm 0.0005{\rm (model/parameterisation)} \pm 0.0012{\rm (hadronisation)} ^{+0.0037}_{-0.0030}{\rm (scale)}$. An extraction of $xF_3^{\gamma Z}$ and results on electroweak unification and scaling violations are also presented., Comment: 159 pages, 83 figures. Updated version as accepted for publication. Small corrections and reordering of tables
Published: 2015

18. Inelastic photoproduction of $J/\psi$ mesons at HERA

Author: Adloff, C., Andreev, V., Andrieu, B., Anthonis, T., Astvatsatourov, A., Babaev, A., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Beglarian, A., Behnke, O., Beier, C., Belousov, A., Berger, C., Berndt, T., Bizot, J.C., Bohme, J., Boudry, V., Braunschweig, W., Brisson, V., Broker, H.B., Brown, D.P., Bruckner, W., Bruncko, D., Busser, F.W., Bunyatyan, A., Burrage, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Clarke, D., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cousinou, M.C., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Davidsson, M., Delcourt, B., Delerue, N., Demirchyan, R., De Roeck, A., De Wolf, E.A., Diaconu, C., Dingfelder, J., Dixon, P., Dodonov, V., Dowell, J.D., Droutskoi, A., Dubak, A., Duprel, C., Eckerlin, G., Eckstein, D., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Eisenhandler, E., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Ferron, S., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garvey, J., Gassner, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Grab, C., Grabski, V., Grassler, H., Greenshaw, T., Grindhammer, G., Hadig, T., Haidt, D., Hajduk, L., Haller, J., Haynes, W.J., Heinemann, B., Heinzelmann, G., Henderson, R.C.W., Hengstmann, S., Henschel, H., Heremans, R., Herrera, G., Herynek, I., Hildebrandt, M., Hilgers, M., Hiller, K.H., Hladky, J., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hurling, S., Ibbotson, M., Issever, C., Jacquet, M., Jaffre, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, C., Johnson, D.P., Jones, M.A.S., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Karschnick, O., Keil, F., Keller, N., Kennedy, J., Kenyon, I.R., Kermiche, S., Kiesling, C., Kjellberg, P., Klein, M., Kleinwort, C., Kluge, T., Knies, G., Koblitz, B., Kolya, S.D., Korbel, V., Kostka, P., Kotelnikov, S.K., Koutouev, R., Koutov, A., Kroseberg, J., Kruger, K., Kuhr, T., Kurca, T., Lamb, D., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebailly, E., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindstroem, M., List, B., Lobodzinska, E., Lobodzinski, B., Loginov, A., Loktionova, N., Lubimov, V., Luders, S., Luke, D., Lytkin, L., Malden, N., Malinovski, E., Malinovski, I., Mangano, S., Maracek, R., Marage, P., Marks, J., Marshall, R., Martyn, H.U., Martyniak, J., Maxeld, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Meyer, P.O., Mikocki, S., Milstead, D., Mohrdieck, S., Mondragon, M.N., Moreau, F., Morozov, A., Morris, J.V., Muller, K., Murn, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, T., Nellen, G., Newman, P.R., Niebergall, F., Niebuhr, C., Nix, O., Nowak, G., Nozicka, M., Olsson, J.E., Ozerov, D., Panassik, V., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Petrukhin, A., Phillips, J.P., Pitzl, D., Poschl, R., Potachnikova, I., Povh, B., Radel, G., Rauschenberger, J., Reimer, P., Reisert, B., Risler, C., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rusakov, S., Rybicki, K., Samson, J., Sankey, D.P.C., Schatzel, S., Scheins, J., Schilling, F.P., Schleper, P., Schmidt, D., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schorner, T., Schroder, V., Schultz-Coulon, H.C., Schwanenberger, C., Sedlak, K., Sefkow, F., Shekelyan, V., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Swart, M., Tchetchelnitski, S., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Turney, J.E., Tzamariudaki, E., Udluft, S., Uraev, A., Urban, Martin, Usik, A., Valkar, S., Valkarova, A., Vallee, C., Van Mechelen, P., Vassiliev, S., Vazdik, Y., Vest, A., Vichnevski, A., Wacker, K., Wagner, J., Wallny, R., Waugh, B., Weber, G., Wegener, D., Werner, C., Werner, N., Wessels, M., White, G., Wiesand, S., Wilksen, T., Winde, M., Winter, G.G., Wissing, C., Wobisch, M., Woehrling, E.E., Wunsch, E., Wyatt, A.C., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zomer, F., Zur Nedden, M., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Octet, Meson, Proton, Nuclear Theory, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, law.invention, Luminosity, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Nuclear Experiment, 010306 general physics, Collider, Engineering (miscellaneous), Quantum chromodynamics, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Rest frame, High Energy Physics::Experiment
Abstract: An analysis of inelastic photoproduction of J/Psi mesons is presented using data collected at the ep collider HERA corresponding to an integrated luminosity of above 80pb-1. Differential and double differential cross sections are measured in a wide kinematic region: 60, Comment: 30 pages, 11 figures, 11 tables
Published: 2002

19. Measurement of Inclusive ep Cross Sections at High Q2 at sqrt(s) = 225 and 252 GeV and of the Longitudinal Proton Structure Function FL at HERA

Author: Andreev, V., Baghdasaryan, A., Britzger, D., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Pirumov, H., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Radescu, V., Buniatyan, A., Raicevic, N., Raspereza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Rusakov, S., Bylinkin, A., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, Stefan, Schoeffel, L., Schoning, A., Schultz-Coulon, H. C., Sefkow, F., Shushkevich, S., Bystritskaya, L., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Straumann, U., Sykora, T., Thompson, P. D., Campbell, A. J., Traynor, D., Truol, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Valkarova, A., Vallee, C., Van Mechelen, P., Vazdik, Y., Wegener, D., Cantun Avila, K. B., Wunsch, E., Zacek, J., Zhang, Z., Zlebcik, R., Zohrabyan, H., Zomer, F., H1 Collaboration, Ceccopieri, F., Cerny, K., Chekelian, V., Contreras, J. G., Baghdasaryan, S., Dainton, J. B., Daum, K., De Wolf, E. A., Diaconu, C., Dobre, M., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Egli, S., Begzsuren, K., Elsen, E., Favart, L., Fedotov, A., Feltesse, J., Ferencei, J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Belousov, A., Glazov, A., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Grebenyuk, A., Greenshaw, T., Grindhammer, G., Habib, S., Haidt, D., Belov, P., Henderson, R. C. W., Herbst, M., Hildebrandt, M., Hladky, J., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacquet, M., Janssen, X., Boudry, V., Jung, A. W., Jung, H., Kapichine, M., Kiesling, C., Klein, M., Kleinwort, C., Kogler, R., Kostka, P., Kretzschmar, J., Kruger, K., Brandt, G., Landon, M. P. J., Lange, W., Laycock, P., Lebedev, A., Levonian, S., Lipka, K., List, B., List, J., Lobodzinski, B., Lubimov, V., Brinkmann, M., Malinovski, E., Martyn, H. U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, Hinrich, Meyer, J., Mikocki, S., Morozov, A., Muller, K., Brisson, V., Naumann, Th., Newman, P. R., Niebuhr, C., Nowak, G., Nowak, K., Olivier, Bob, Olsson, J. E., Ozerov, D., Pahl, Philipp, Pascaud, C., Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract: Inclusive ep double differential cross sections for neutral current deep inelastic scattering are measured with the H1 detector at HERA. The data were taken with a lepton beam energy of 27.6 GeV and two proton beam energies of Ep = 460 and 575 GeV corresponding to centre-of-mass energies of 225 and 252 GeV, respectively. The measurements cover the region of 6.5 *10^{-4}, 41 page, 6 tables, 10 figures - accepted by Eur. Phys. J. C
Published: 2014

20. Inclusive photoproduction of neutral pions in the photon hemisphere at HERA

Author: Adloff, C, Andreev, V, Andrieu, B, Arkadov, V, Astvatsatourov, A, Ayyaz, I, Babaev, A, Bahr, J, Baranov, P, Barrelet, E, Bartel, W, Bassler, U, Bate, P, Beglarian, A, Behnke, O, Beier, C, Belousov, A, Benisch, T, Berger, C, Bernardi, G, Berndt, T, Bertrand-Coremans, G, Bizot, JC, Borras, K, Boudry, V, Braunschweig, W, Brisson, V, Broker, HB, Brown, DP, Bruckner, W, Bruel, P, Bruncko, D, Burger, J, Busser, FW, Bunyatyan, A, Burkhardt, H, Burrage, A, Buschhorn, G, Campbell, AJ, Cao, J, Carli, T, Caron, S, Chabert, E, Clarke, D, Clerbaux, B, Collard, C, Contreras, JG, Coughlan, JA, Cousinou, MC, Cox, BE, Cozzika, G, Cvach, J, Dainton, JB, Dau, WD, Daum, K, David, M, Davidsson, M, Delcourt, B, Delerue, N, Demirchyan, R, De Roeck, A, De Wolf, EA, Diaconu, C, Dixon, P, Dodonov, V, Donovan, KT, Dowell, JD, Droutskoi, A, Duprel, C, Ebert, J, Eckerlin, G, Eckstein, D, Efremenko, V, Egli, S, Eichler, R, Eisele, F, Eisenhandler, E, Ellerbrock, M, Elsen, E, Erdmann, M, Faulkner, PJW, Favart, L, Fedotov, A, Felst, R, Ferencei, J, Ferrarotto, F, Ferron, S, Fleischer, M, Flugge, G, Fomenko, A, Foresti, I, Formanek, J, Foster, JM, Franke, G, Gabathuler, E, Gabathuler, K, Garvey, J, Gassner, J, Gayler, J, Gerhards, R, Ghazaryan, S, Glazov, A, Goerlich, L, Gogitidze, N, Goldberg, M, Goodwin, C, Grab, C, Grassler, H, Greenshaw, T, Grindhammer, G, Hadig, T, Haidt, D, Hajduk, L, Haustein, V, Haynes, WJ, Heinemann, B, Heinzelmann, G, Henderson, RCW, Hengstmann, S, Henschel, H, Heremans, R, Herrera, G, Herynek, I, Hilgers, M, Hiller, KH, Hilton, CD, Hladky, J, Hoting, P, Hoffmann, D, Hoprich, W, Horisberger, R, Hurling, S, Ibbotson, M, Issever, C, Jacquet, M, Jaffre, M, Janauschek, L, Jansen, DM, Janssen, X, Jemanov, V, Jonsson, L, Johnson, DP, Jones, MAS, Jung, H, Kastli, HK, Kant, D, Kapichine, M, Karlsson, M, Karschnick, O, Kaufmann, O, Kausch, M, Keil, F, Keller, N, Kennedy, J, Kenyon, IR, Kermiche, S, Kiesling, C, Klein, M, Kleinwort, C, Knies, G, Koblitz, B, Kolanoski, H, Kolya, SD, Korbel, V, Kostka, P, Kotelnikov, SK, Krasny, MW, Krehbiel, H, Kroseberg, J, Krucker, D, Kruger, K, Kupper, A, Kuhr, T, Kurca, T, Kutuev, R, Lachnit, W, Lahmann, R, Lamb, D, Landon, MPJ, Lange, W, Lastovicka, T, Lebedev, A, Leissner, B, Lemaitre, V, Lemrani, R, Lendermann, V, Levonian, S, Lindstroem, M, Lobo, G, Lobodzinska, E, Lobodzinski, B, Loktionova, N, Lubimov, V, Luders, S, Luke, D, Lytkin, L, Magnussen, N, Mahlke-Kruger, H, Malden, N, Malinovski, E, Malinovski, I, Maracek, R, Marage, P, Marks, J, Marshall, R, Martyn, HU, Martyniak, J, Maxfield, SJ, Mehta, A, Meier, K, Merkel, P, Metlica, F, Meyer, A, Meyer, H, Meyer, J, Meyer, PO, Mikocki, S, Milstead, D, Mkrtchyan, T, Mohr, R, Mohrdieck, S, Mondragon, MN, Moreau, F, Morozov, A, Morris, JV, Muller, D, Muller, K, Murin, P, Nagovizin, V, Naroska, B, Naumann, J, Naumann, T, Negri, I, Nellen, G, Newman, PR, Nicholls, TC, Niebergall, F, Niebuhr, C, Nix, O, Nowak, G, Nunnemann, T, Olsson, JE, Ozerov, D, Panassik, V, Pascaud, C, Passaggio, S, Patel, GD, Perez, E, Phillips, JP, Pitzl, D, Poschl, R, Potachnikova, I, Povh, B, Rabbertz, K, Radel, G, Rauschenberger, J, Reimer, P, Reisert, B, Reyna, D, Riess, S, Rizvi, E, Robmann, P, Roosen, R, Rostovtsev, A, Royon, C, Rusakov, S, Rybicki, K, Sankey, DPC, Scheins, J, Schilling, FP, Schleif, S, Schleper, P, Schmidt, D, Schoeffel, L, Schoning, A, Schorner, T, Schroder, V, Schultz-Coulon, HC, Sedlak, K, Sefkow, F, Shekelyan, V, Sheviakov, I, Shtarkov, LN, Siegmon, G, Sievers, P, Sirois, Y, Sloan, T, Smirnov, P, Smith, M, Solochenko, V, Soloviev, Y, Spaskov, V, Specka, A, Spitzer, H, Stamen, R, Steinhart, J, Stella, B, Stellberger, A, Stiewe, J, Straumann, U, Struczinski, W, Sutton, JP, Swart, M, Tasevsky, M, Tchernyshov, V, Tchetchelnitski, S, Thompson, G, Thompson, PD, Tobien, N, Traynor, D, Truol, P, Tsipolitis, G, Turnau, J, Turney, JE, Tzamariudaki, E, Udluft, S, Usik, A, Valkar, S, Valkarova, A, Vallee, C, Van Mechelen, P, Vazdik, Y, von Dombrowski, S, Wacker, K, Wallny, R, Walter, T, Waugh, B, Weber, G, Weber, M, Wegener, D, Wegner, A, Wengler, T, Werner, M, White, G, Wiesand, S, Wilksen, T, Winde, M, Winter, GG, Wissing, C, Wobisch, M, Wollatz, H, Wunsch, E, Zacek, J, Zalesak, J, Zhang, Z, Zhokin, A, Zomer, F, Zsembery, J, zur Nedden, M, Collaboration, H, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration
Subjects: Physics, Particle physics, Photon, Physics and Astronomy (miscellaneous), Meson, 010308 nuclear & particles physics, Monte Carlo method, FOS: Physical sciences, Context (language use), HERA, 01 natural sciences, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), symbols.namesake, Pion, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], symbols, Feynman diagram, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract: The inclusive cross section for the photoproduction of neutral pions has been measured as a function of the transverse momentum, rapidity, and Feynman x of the pizero mesons at an average photon--proton centre-of-mass energy of 208 GeV and for photon virtualities below Q^2=0.01 GeV^2. The pizero measurement extends the range covered by previous charged particle measurements at HERA by two units of rapidity in the photon direction down to a value of -5.5 in the gamma p centre-of-mass frame. The pizero transverse momentum distribution is well described over the whole measured range by a power law ansatz, while an exponential fit falls below the data at transverse momentum values above 1.5 GeV/c. Good agreement with the predictions of the Monte Carlo models PYTHIA and PHOJET is found. In the context of the PYTHIA model the data are inconsistent with large intrinsic transverse momentum values in the photon., 20 pages, 6 figures and 3 tables
Published: 2000

21. Bose-Einstein correlations in deep inelastic $ep$ scattering at HERA

Author: Adloff, C., Aid, S., Anderson, M., Andreev, V., Andrieu, B., Arkadov, V., Arndt, C., Ayyaz, I., Babaev, A., Bähr, J., Bán, J., Ban, Y., Baranov, P., Barrelet, E., Barschke, R., Bartel, W., Bassler, U., Beck, H. P., Beck, M., Behrend, H. -J, Belousov, A., Berger, Ch, Bernardi, G., Bertrand-Coremans, G., Beyer, R., Biddulph, P., Bispham, P., Bizot, J. C., Boiras, K., Botterweck, F., Boudry, V., Bourov, S., Braemer, A., Braunschweig, W., Brisson, V., Brückner, W., Bruel, P., Bruncko, D., Brune, C., Buchholz, R., Bungener, L., Bürger, J., Büsser, F. W., Buniatian, A., Burke, S., Burton, M. J., Buschhorn, G., Calvet, D., Campbell, A. J., Carli, T., Charlet, M., Clarke, D., Clerbaux, B., Cocks, S., Contreras, J. G., Cormack, C., Coughlan, J. A., Courau, A., Cousinou, M. -C, Cox, B. E., Cozzika, G., Cussans, D. G., Cvach, J., Dagoret, S., Dainton, J. B., Dau, W. D., Daum, K., David, M., Davis, C. L., Roeck, A., Wolf, E. A., Delcourt, B., Dirkmann, M., Dixon, P., Dlugosz, W., Dollfus, C., Donovan, K. T., Dowell, J. D., Dreis, H. B., Droutskoi, A., Ebert, J., Ebert, T. R., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Eisenhandler, E., Elsen, E., Erdmann, M., Fahr, A. B., Favart, L., Fedotov, A., Feist, R., Feltesse, J., Ferencei, J., Ferrarotto, F., Flamm, K., Fleischer, M., Flieser, M., Flügge, G., Fomenko, A., Formánek, J., Foster, J. M., Franke, G., Gabathuler, E., Gabathuler, K., Gaede, F., Garvey, J., Gayler, J., Gebauer, M., Genzel, H., Gerhards, R., Glazov, A., Goerlich, L., Gogitidze, N., Goldberg, M., Goldner, D., Krzysztof Golec-Biernat, Gonzalez-Pineiro, B., Gorelov, I., Grab, C., Grässler, H., Greenshaw, T., Griffiths, R. K., Grindhammer, G., Gruber, A., Gruber, C., Hadig, T., Haidt, D., Hajduk, L., Haller, T., Hampel, M., Haynes, W. J., Heinemann, B., Heinzelmann, G., Henderson, R. C. W., Henschel, H., Herynek, I., Hess, M. F., Hewitt, K., Hiller, K. H., Hilton, C. D., Hladký, J., Höppner, M., Hoffmann, D., Holtom, T., Horisberger, R., Hudgson, V. L., Hütte, M., Ibbotson, M., Işsever, Ç, Itterbeck, H., Jacholkowska, A., Jacobsson, C., Jacquet, M., Jaffre, M., Janoth, J., Jansen, D. M., Jönsson, L., Johnson, D. P., Jung, H., Kalmus, P. I. P., Kander, M., Kant, D., Kathage, U., Katzy, J., Kaufmann, H. H., Kaufmann, O., Kausch, M., Kazarian, S., Kenyon, I. R., Kermiche, S., Keuker, C., Kiesling, C., Klein, M., Kleinwort, C., Knies, G., Köhler, T., Könne, J. H., Kolanoski, H., Kolya, S. D., Korbel, V., Kostka, P., Kotelnikov, S. K., Krämerkämper, T., Krasny, M. W., Krehbiel, H., Krücker, D., Küpper, A., Küster, H., Kuhlen, M., Kurča, T., Kurzhöfer, J., Laforge, B., Landon, M. P. J., Lange, W., Langenegger, U., Lebedev, A., Lehner, F., Lemaitre, V., Levonian, S., Lindstroem, M., Linsel, F., Lipinski, J., List, B., Lobo, G., Lomas, J. W., Lopez, G. C., Lubimov, V., Lüke, D., Lytkin, L., Magnussen, N., Mahlke-Krüger, H., Malinovski, E., Maraček, R., Marage, P., Marks, J., Marshall, R., Martens, J., Martin, G., Martin, R., Martyn, H. -U, Martyniak, J., Mavroidis, T., Maxfield, S. J., Mcmahon, S. J., Mehta, A., Meier, K., Merkel, P., Metlica, F., Meyer, A., Meyer, H., Meyer, J., Meyer, P. -O, Migliori, A., Mikocki, S., Milstead, D., Moeck, J., Moreau, F., Morris, J. V., Mroczko, E., Müller, D., Walter, T., Müller, K., Murín, P., Nagovizin, V., Nahnhauer, R., Naroska, B., Naumann, Th, Négri, I., Newman, P. R., Newton, D., Nguyen, H. K., Nicholls, T. C., Niebergall, F., Niebuhr, C., Niedzballa, Ch, Niggli, H., Nowak, G., Nunnemann, T., Nyberg-Werther, M., Oberlack, H., Olsson, J. E., Ozerov, D., Palmen, P., Panaro, E., Panitch, A., Pascaud, C., Passaggio, S., Patel, G. D., Pawletta, H., Peppel, E., Perez, E., Phillips, J. P., Pieuchot, A., Pitzl, D., Pöschl, R., Pope, G., Povh, B., Prell, S., Rabbertz, K., Rädel, G., Riedlberger, J., Reimer, P., Rick, H., Riess, S., Rizvi, E., Robmann, P., Roosen, R., Rosenbauer, K., Rostovtsev, A., Rouse, F., Royon, C., Rüter, K., Rusakov, S., Rybicki, K., Sankey, D. P. C., Schacht, P., Schiek, S., Schleif, S., Schleper, P., Schlippe, W., Schmidt, D., Schmidt, G., Schoeffel, L., Schöning, A., Schröder, V., Schuhmann, E., Schwab, B., Sefkow, F., Semenov, A., Shekelyan, V., Sheviakov, I., Shtarkov, L. N., Siegmon, G., Siewert, U., Sirois, Y., Skillicorn, I. O., Sloan, T., Smirnov, P., Smith, M., Solochenko, V., Soloviev, Y., Specka, A., Spiekermann, J., Spielman, S., Spitzer, H., Squinabol, F., Steffen, P., Steinberg, R., Steinhart, J., Stella, B., Stellberger, A., Stier, J., Stiewe, J., Stößlein, U., Stolze, K., Straumann, U., Struczinski, W., Sutton, J. P., Tapprogge, S., Taševský, M., Tchernyshov, V., Tchetchelnitski, S., Theissen, J., Thompson, G., Thompson, P. D., Tobien, N., Todenhagen, R., Truöl, P., Tsipolitis, G., Turnau, J., Tzamariudaki, E., Uelkes, P., Usik, A., Valkár, S., Valkárová, A., Vallée, C., Esch, P., Mechelen, P., Vandenplas, D., Vazdik, Y., Verrecchia, P., Villet, G., Wacker, K., Wagener, A., Wagener, M., Wallny, R., Waugh, B., Weber, G., Weber, M., Wegener, D., Wegner, A., Wengler, T., Werner, M., West, L. R., Wiesand, S., Wilksen, T., Willard, S., Winde, M., Winter, G. -G, Wittek, C., Wobisch, M., Wollatz, H., Wünsch, E., Žáček, J., Zarbock, D., Zhang, Z., Zhokin, A., Zini, P., Zomer, F., Zsembery, J., Zur Nedden, M., Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11)
Subjects: Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Scattering, FOS: Physical sciences, Bose–Einstein correlations, HERA, Inelastic scattering, 01 natural sciences, Charged particle, High Energy Physics - Experiment, Hadronization, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Invariant mass, Nuclear Experiment, 010306 general physics
Abstract: Two-particle correlations in invariant mass are studied separately for like-sign and unlike-sign charged particles produced in deep inelastic positron-proton scattering in a new kinematical domain. The data were taken with the H1 detector at the HERA storage ring in 1994, in which 27.5 GeV positrons collided with 820 GeV protons at a centre of mass energy sqrt{s}=300 GeV. The observed enhancement of the like-sign correlations at low invariant masses is related to the dimensions of the hadronic source. The data are compared to different QCD models where the hadronization is performed with the string-fragmentation model. Results are presented for the first time separately for diffractive and non-diffractive scattering, in domains of four-momentum transfer, Bjorken-x, and hadronic center of mass energy, and in intervals of charged particle multiplicity. The observed source radii do not differ strongly from those measured in lower energy lepton-nucleon inelastic scattering, and e^+e^- annihilation., 36 pages, 10 Figures
Published: 1997

22. Search for Squarks in R-parity Violating Supersymmetry in ep Collisions at HERA

Author: Aaron, F. D., Alexa, C., Begzsuren, K., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Lendermann, V., Levonian, S., Lipka, K., Belousov, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Makankine, A., Malinovski, E., Marage, P., Martyn, H.-U., Maxfield, S. J., Bizot, J. C., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Boudry, V., Mudrinic, M., Müller, K., Naumann, Th., Newman, P. R., Niebuhr, C., Nikitin, D., Nowak, G., Nowak, K., Olsson, J. E., Osman, S., Bozovic-Jelisavcic, I., Ozerov, D., Pahl, P., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Bracinik, J., Picuric, I., Piec, S., Pirumov, H., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Radescu, V., Raicevi\'c, N., Brandt, G., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rusakov, S., Sálek, D., Brinkmann, M., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schœffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shtarkov, L. N., Shushkevich, S., Brisson, V., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Britzger, D., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Thompson, G., Thompson, P. D., Toll, T., Tran, T. H., Traynor, D., Truöl, P., Andreev, V., Bruncko, D., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vazdik, Y., von den Driesch, M., Wegener, D., Bunyatyan, A., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zohrabyan, H., Zomer, F., COLLABORATION, H1, Buschhorn, G., Bylinkin, A., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Ceccopieri, F., Cerny, K., Cerny, V., Backovic, S., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cvach, J., Dainton, J. B., Daum, K., Delcourt, B., Delvax, J., De Wolf, E. A., Baghdasaryan, A., Diaconu, C., Dobre, M., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Egli, S., Eliseev, A., Elsen, E., Favart, L., Baghdasaryan, S., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D.-J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Barrelet, E., Glazov, A., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Grebenyuk, A., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Bartel, W., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Behrend, O., Horisberger, R., Hreus, T., Huber, F., Jacquet, M., Janssen, X., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Belov, P., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Kretzschmar, J., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), H1 Collaboration, and H1 Collaboration (ukupan broj autora: 215)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Elementary particle, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), R-parity, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Grand Unified Theory, ddc:530, 010306 general physics, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Yukawa potential, Superpartner, HERA, Supersymmetry, High Energy Physics::Experiment, Minimal Supersymmetric Standard Model
Abstract: A search for squarks in R-parity violating supersymmetry is performed in e^+- p collisions at HERA using the H1 detector. The full data sample taken at a centre-of-mass energy sqrt{s}=319 GeV is used for the analysis, corresponding to an integrated luminosity of 255 pb^-1 of e^+ p and 183 pb^-1 of e^- p collision data. The resonant production of squarks via a Yukawa coupling lambda' is considered, taking into account direct and indirect R-parity violating decay modes. Final states with jets and leptons are investigated. No evidence for squark production is found and mass dependent limits on lambda' are obtained in the framework of the Minimal Supersymmetric Standard Model and in the Minimal Supergravity Model. In the considered part of the parameter space, for a Yukawa coupling of electromagnetic strength lambda'= 0.3, squarks of all flavours are excluded up to masses of 275 GeV at 95% confidence level, with down-type squarks further excluded up to masses of 290 GeV., 31 pages, 11 figures, 1 table
Published: 2010

23. Measurement of the Diffractive Deep-Inelastic Scattering Cross Section with a Leading Proton at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Britzger, D., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Ceccopieri, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cvach, J., Dainton, J. B., Daum, K., Deák, M., Delcourt, B., Delvax, J., Wolf, E. A., Diaconu, C., Dobre, M., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. -J, Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Grebenyuk, A., Timothy Greenshaw, Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Huber, F., Jacquet, M., Janssen, X., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Lendermann, V., Levonian, S., Lipka, K., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Makankine, A., Malinovski, E., Marage, P., Martyn, H. -U, Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Naumann, Th, Newman, P. R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nowak, K., Olsson, J. E., Osman, S., Ozerov, D., Pahl, P., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th, Pascaud, C., Patel, G. D., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pirumov, H., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Radescu, V., Raicevi C, N., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rusakov, S., Sálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schœffel, L., Schöning, A., Schultz-Coulon, H. -C, Sefkow, F., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Thompson, G., Thompson, P. D., Toll, T., Tran, T. H., Traynor, D., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Mechelen, P., Vargas Trevino, A., Vazdik, Y., Den Driesch, M., Wegener, D., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zohrabyan, H., Zomer, F., Starita, Sabine, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract: The cross section for the diffractive deep-inelastic scattering process ep -> e X p is measured, with the leading final state proton detected in the H1 Forward Proton Spectrometer. The data sample covers the range x_pom, 48 pages, 18 figures, 4 tables
Published: 2010

24. Events with an Isolated Lepton and Missing Transverse Momentum and Measurement of W Production at HERA

Author: Aaron, F. D., Abramowicz, H., Abt, I., Adamczyk, L., Adamus, M., Aldaya Martin, M., Alexa, C., Alimujiang, K., Andreev, V., Antonelli, S., Antonioli, P., Antonov, A., Antunovic, B., Arneodo, M., Aushev, V., Bachynska, O., Backovic, S., Baghdasaryan, A., Bamberger, A., Barakbæv, A. N., Barbagli, G., Bari, G., Barreiro, F., Barrelet, E., Bartel, W., Bartsch, D., Basile, M., Begzsuren, K., Behnke, O., Behr, J., Behrens, U., Bellagamba, L., Belousov, A., Bertolin, A., Bhadra, S., Bindi, M., Bizot, J. C., Blohm, C., Bold, T., Boos, E. G., Borodin, M., Borras, K., Boscherini, D., Bot, D., Boudry, V., Boutle, S. K., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Brock, I., Brownson, E., Brugnera, R., Brümmer, N., Bruncko, D., Bruni, A., Bruni, G., Brzozowska, B., Bunyatyan, A., Buschhorn, G., Bussey, P. J., Butterworth, J. M., Bylsma, B., Bystritskaya, L., Caldwell, A., Campbell, A. J., Cantun Avila, K. B., Capua, M., Carlin, R., Catterall, C. D., Cerny, K., Cerny, V., Chekanov, S., Chekelian, V., Cholewa, A., Chwastowski, J., Ciborowski, J., Ciesielski, R., Cifarelli, L., Cindolo, F., Contin, A., Contreras, J. G., Cooper-Sarkar, A. M., Coppola, N., Corradi, M., Corriveau, F., Costa, M., Coughlan, J. A., Cozzika, G., Cvach, J., D'Agostini, G., Dainton, J. B., Dal Corso, F., Daum, K., Deák, M., de Favereau, J., Delcourt, B., Del Degan, M., del Peso, J., Delvax, J., Dementiev, R. K., De Pasquale, S., Derrick, M., Devenish, R. C. E., De Wolf, E. A., Diaconu, C., Dobur, D., Dodonov, V., Dolgoshein, B. A., Dossanov, A., Doyle, A. T., Drugakov, V., Dubak, A., Durkin, L. S., Dusini, S., Eckerlin, G., Efremenko, V., Egli, S., Eisenberg, Y., Eliseev, A., Elsen, E., Ermolov, P. F., Eskreys, A., Falkiewicz, A., Fang, S., Favart, L., Fazio, S., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Ferrando, J., Ferrero, M. I., Figiel, J., Fischer, D.-J., Fleischer, M., Fomenko, A., Forrest, M., Foster, B., Fourletov, S., Gabathuler, E., Galas, A., Gallo, E., Garfagnini, A., Gayler, J., Geiser, A., Ghazaryan, S., Gialas, I., Gladilin, L. K., Gladkov, D., Glasman, C., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Golubkov, Yu. A., Göttlicher, P., Gouzevitch, M., Grab, C., Grabowska-Bold, I., Grebenyuk, J., Greenshaw, T., Gregor, I., Grell, B. R., Grigorescu, G., Grindhammer, G., Grzelak, G., Gwenlan, C., Haas, T., Habib, S., Haidt, D., Hain, W., Hamatsu, R., Hart, J. C., Hartmann, H., Hartner, G., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hilger, E., Hiller, K. H., Hochman, D., Hoffmann, D., Holm, U., Hori, R., Horisberger, R., Horton, K., Hreus, T., Hüttmann, A., Iacobucci, G., Ibrahim, Z. A., Iga, Y., Ingbir, R., Ishitsuka, M., Jacquet, M., Jakob, H.-P., Janssen, X., Januschek, F., Jimenez, M., Jones, T. W., Jönsson, L., Jung, A. W., Jung, H., Jüngst, M., Kadenko, I., Kahle, B., Kamaluddin, B., Kananov, S., Kanno, T., Kapichine, M., Karshon, U., Karstens, F., Katkov, I. I., Katzy, J., Kaur, M., Kaur, P., Kenyon, I. R., Keramidas, A., Khein, L. A., Kiesling, C., Kim, J. Y., Kisielewska, D., Kitamura, S., Klanner, R., Klein, M., Klein, U., Kleinwort, C., Kluge, T., Knutsson, A., Koffeman, E., Kogler, R., Kollar, D., Kooijman, P., Korol, Ie., Korzhavina, I. A., Kostka, P., Kota\'nski, A., Kötz, U., Kowalski, H., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kulinski, P., Kuprash, O., Kutak, K., Kuze, M., Kuzmin, V. A., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Lee, A., Leibenguth, G., Lendermann, V., Levchenko, B. B., Levonian, S., Levy, A., Li, G., Libov, V., Limentani, S., Ling, T. Y., Lipka, K., Liptaj, A., Lisovyi, M., List, B., List, J., Lobodzinska, E., Lohmann, W., Löhr, B., Lohrmann, E., Loizides, J. H., Loktionova, N., Long, K. R., Longhin, A., Lontkovskyi, D., Lopez-Fernandez, R., Lubimov, V., Łukasik, J., Lukina, O. Yu., Łuzniak, P., Maeda, J., Magill, S., Makankine, A., Makarenko, I., Malinovski, E., Malka, J., Mankel, R., Marage, P., Margotti, A., Marini, G., Marti, Ll., Martin, J. F., Martyn, H.-U., Mastroberardino, A., Matsumoto, T., Mattingly, M. C. K., Maxfield, S. J., Mehta, A., Melzer-Pellmann, I.-A., Meyer, A. B., Meyer, H., Meyer, J., Miglioranzi, S., Mikocki, S., Milcewicz-Mika, I., Mohamad Idris, F., Monaco, V., Montanari, A., Moreau, F., Morozov, A., Morris, J. D., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Musgrave, B., Nagano, K., Namsoo, T., Nania, R., Naumann, Th., Newman, P. R., Nicholass, D., Niebuhr, C., Nigro, A., Nikiforov, A., Nikitin, A., Ning, Y., Noor, U., Notz, D., Nowak, G., Nowak, K., Nowak, R. J., Nozicka, M., Nuncio-Quiroz, A. E., Oh, B. Y., Okazaki, N., Oliver, K., Olivier, B., Olkiewicz, K., Olsson, J. E., Onishchuk, Yu., Osman, S., Ota, O., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Papageorgiu, K., Parenti, A., Pascaud, C., Patel, G. D., Paul, E., Pawlak, J. M., Pawlik, B., Pejchal, O., Pelfer, P. G., Pellegrino, A., Perez, E., Perlanski, W., Perrey, H., Petrukhin, A., Picuric, I., Piec, S., Piotrzkowski, K., Pitzl, D., Placakythe, R., Plucinski, P., Pokorny, B., Pokrovskiy, N. S., Polifka, R., Polini, A., Povh, B., Proskuryakov, A. S., Przybycién, M., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Raval, A., Ravdandorj, T., Reeder, D. D., Reimer, P., Reisert, B., Ren, Z., Repond, J., Ri, Y. D., Rizvi, E., Robertson, A., Robmann, P., Roland, B., Roloff, P., Ron, E., Roosen, R., Rostovtsev, A., Rotaru, M., Rubinsky, I., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Ruspa, M., Sacchi, R., Sálek, D., Salii, A., Samson, U., Sankey, D. P. C., Sartorelli, G., Sauter, M., Sauvan, E., Savin, A. A., Saxon, D. H., Schioppa, M., Schlenstedt, S., Schleper, P., Schmidke, W. B., Schmitt, S., Schneekloth, U., Schœffel, L., Schönberg, V., Schöning, A., Schörner-Sadenius, T., Schultz-Coulon, H.-C., Schwartz, J., Sciulli, F., Sefkow, F., Shaw-West, R. N., Shcheglova, L. M., Shehzadi, R., Shimizu, S., Shtarkov, L. N., Shushkevich, S., Singh, I., Skillicorn, I. O., Sloan, T., Słominski, W., Smiljanic, I., Smith, W. H., Sola, V., Solano, A., Soloviev, Y., Son, D., Sopicki, P., Sorokin, Iu., Sosnovtsev, V., South, D., Spaskov, V., Specka, A., Spiridonov, A., Stadie, H., Stanco, L., Staykova, Z., Steder, M., Stella, B., Stern, A., Stewart, T. P., Stifutkin, A., Stoicea, G., Stopa, P., Straumann, U., Suchkov, S., Sunar, D., Susinno, G., Suszycki, L., Sykora, T., Sztuk, J., Szuba, D., Szuba, J., Tapper, A. D., Tassi, E., Tchoulakov, V., Terrón, J., Theedt, T., Thompson, G., Thompson, P. D., Tiecke, H., Tokushuku, K., Toll, T., Tomasz, F., Tomaszewska, J., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurugai, T., Turcato, M., Turnau, J., Tymieniecka, T., Urban, K., Uribe-Estrada, C., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vázquez, M., Verbytskyi, A., Viazlo, V., Vinokurova, S., Vlasov, N. N., Volchinski, V., Volynets, O., von den Driesch, M., Walczak, R., Wan Abdullah, W. A. T., Wegener, D., Whitmore, J. J., Whyte, J., Wiggers, L., Wing, M., Wissing, Ch., Wlasenko, M., Wolf, G., Wolfe, H., Wrona, K., Wünsch, E., Yagües-Molina, A. G., Yamada, S., Yamazaki, Y., Yoshida, R., Youngman, C., Zácek, J., Zálesák, J., Zarnecki, A. F., Zawiejski, L., Zeniaev, O., Zeuner, W., Zhang, Z., Zhautykov, B. O., Zhokin, A., Zhou, C., Zichichi, A., Zimmermann, T., Zohrabyan, H., Zolko, M., Zomer, F., Zotkin, D. S., Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, ZEUS, F.D. AARON, H. ABRAMOWICZ, I. ABT, L. ADAMCZYK, M. ADAMUS, M. ALDAYA MARTIN, C. ALEXA, V. ANDREEV, S. ANTONELLI, P. ANTONIOLI, A. ANTONOV, B. ANTUNOVIC, M. ARNEODO, V. AUSHEV, O. BACHYNSKA, S. BACKOVIC, A. BAGHDASARYAN, A. BAMBERGER, A.N. BARAKBAEV, G. BARBAGLI, G. BARI, F. BARREIRO, E. BARRELET, W. BARTEL, D. BARTSCH, M. BASILE, K. BEGZSUREN, O. BEHNKE, J. BEHR, U. BEHRENS, L. BELLAGAMBA, A. BELOUSOV, A. BERTOLIN, S. BHADRA, M. BINDI, J.C. BIZOT, C. BLOHM, T. BOLD, E.G. BOOS, M. BORODIN, K. BORRAS, D. BOSCHERINI, D. BOT, V. BOUDRY, S.K. BOUTLE, I. BOZOVIC-JELISAVCIC, J. BRACINIK, G. BRANDT, M. BRINKMANN, V. BRISSON, I. BROCK, E. BROWNSON, R. BRUGNERA, N. BRUMMER, D. BRUNCKO, A. BRUNI, G. BRUNI, B. BRZOZOWSKA, A. BUNYATYAN, G. BUSCHHORN, P.J. BUSSEY, J.M. BUTTERWORTH, B. BYLSMA, L. BYSTRITSKAYA, A. CALDWELL, A.J. CAMPBELL, K.B. CANTUN AVILA, M. CAPUA, R. CARLIN, C.D. CATTERALL, K. CERNY, V. CERNY, S. CHEKANOV, V. CHEKELIAN, A. CHOLEWA, J. CHWASTOWSKI, J. CIBOROWSKI, R. CIESIELSKI, L. CIFARELLI, F. CINDOLO, A. CONTIN, J.G. CONTRERAS, A.M. COOPER-SARKAR, N. COPPOLA, M. CORRADI, F. CORRIVEAU, M. COSTA, J.A. COUGHLAN, G. COZZIKA, J. CVACH, G. D'AGOSTINI, J.B. DAINTON, F. DAL CORSO, K. DAUM, M. DEAK, J. DE FAVEREAU, B. DELCOURT, M. DEL DEGAN, J. DEL PESO, J. DELVAX, R.K. DEMENTIEV, S. DE PASQUALE, M. DERRICK, R.C.E. DEVENISH, E.A. DE WOLF, C. DIACONU, D. DOBUR, V. DODONOV, B.A. DOLGOSHEIN, A. DOSSANOV, A.T. DOYLE, V. DRUGAKOV, A. DUBAK, L.S. DURKIN, S. DUSINI, G. ECKERLIN, V. EFREMENKO, S. EGLI, Y. EISENBERG, A. ELISEEV, E. ELSEN, P.F. ERMOLOV, A. ESKREYS, A. FALKIEWICZ, S. FANG, L. FAVART, S. FAZIO, A. FEDOTOV, R. FELST, J. FELTESSE, J. FERENCEI, J. FERRANDO, M.I. FERRERO, J. FIGIEL, D.J. FISCHER, M. FLEISCHER, A. FOMENKO, M. FORREST, B. FOSTER, S. FOURLETOV, E. GABATHULER, A. GALAS, E. GALLO, A. GARFAGNINI, J. GAYLER, A. GEISER, S. GHAZARYAN, I. GIALAS, L.K. GLADILIN, D. GLADKOV, C. GLASMAN, A. GLAZOV, I. GLUSHKOV, L. GOERLICH, N. GOGITIDZE, YU.A. GOLUBKOV, P. GOTTLICHER, M. GOUZEVITCH, C. GRAB, I. GRABOWSKA-BOLD, J. GREBENYUK, T. GREENSHAW, I. GREGOR, B.R. GRELL, G. GRIGORESCU, G. GRINDHAMMER, G. GRZELAK, C. GWENLAN, T. HAAS, S. HABIB, D. HAIDT, W. HAIN, R. HAMATSU, J.C. HART, H. HARTMANN, G. HARTNER, C. HELEBRANT, R.C.W. HENDERSON, E. HENNEKEMPER, H. HENSCHEL, M. HERBST, G. HERRERA, M. HILDEBRANDT, E. HILGER, K.H. HILLER, D. HOCHMAN, D. HOFFMANN, U. HOLM, R. HORI, R. HORISBERGER, K. HORTON, T. HREUS, A. HUTTMANN, G. IACOBUCCI, Z.A. IBRAHIM, Y. IGA, R. INGBIR, M. ISHITSUKA, M. JACQUET, H.P. JAKOB, X. JANSSEN, F. JANUSCHEK, M. JIMENEZ, T.W. JONES, L. JONSSON, A.W. JUNG, H. JUNG, M. JUNGST, I. KADENKO, B. KAHLE, B. KAMALUDDIN, S. KANANOV, T. KANNO, M. KAPICHINE, U. KARSHON, F. KARSTENS, I.I. KATKOV, J. KATZY, M. KAUR, P. KAUR, I.R. KENYON, A. KERAMIDAS, L.A. KHEIN, C. KIESLING, J.Y. KIM, D. KISIELEWSKA, S. KITAMURA, R. KLANNER, M. KLEIN, U. KLEIN, C. KLEINWORT, T. KLUGE, A. KNUTSSON, E. KOFFEMAN, R. KOGLER, D. KOLLAR, P. KOOIJMAN, IE. KOROL, I.A. KORZHAVINA, P. KOSTKA, A. KOTANSKI, U. KOTZ, H. KOWALSKI, M. KRAEMER, K. KRASTEV, J. KRETZSCHMAR, A. KROPIVNITSKAYA, K. KRUGER, P. KULINSKI, O. KUPRASH, K. KUTAK, M. KUZE, V.A. KUZMIN, M.P.J. LANDON, W. LANGE, G. LASTOVICKA-MEDIN, P. LAYCOCK, A. LEBEDEV, A. LEE, G. LEIBENGUTH, V. LENDERMANN, B.B. LEVCHENKO, S. LEVONIAN, A. LEVY, G. LI, V. LIBOV, S. LIMENTANI, T.Y. LING, K. LIPKA, A. LIPTAJ, M. LISOVYI, B. LIST, J. LIST, E. LOBODZINSKA, W. LOHMANN, B. LOHR, E. LOHRMANN, J.H. LOIZIDES, N. LOKTIONOVA, K.R. LONG, A. LONGHIN, D. LONTKOVSKYI, R. LOPEZ-FERNANDEZ, V. LUBIMOV, J. LUKASIK, O.YU. LUKINA, P. LUZNIAK, J. MAEDA, S. MAGILL, A. MAKANKINE, I. MAKARENKO, E. MALINOVSKI, J. MALKA, R. MANKEL, P. MARAGE, A. MARGOTTI, G. MARINI, LL. MARTI, J.F. MARTIN, H.U. MARTYN, A. MASTROBERARDINO, T. MATSUMOTO, M.C.K. MATTINGLY, S.J. MAXFIELD, A. MEHTA, I.A. MELZER-PELLMANN, A.B. MEYER, H. MEYER, J. MEYER, S. MIGLIORANZI, S. MIKOCKI, I. MILCEWICZ-MIKA, F. MOHAMAD IDRIS, V. MONACO, A. MONTANARI, F. MOREAU, A. MOROZOV, J.D. MORRIS, J.V. MORRIS, M.U. MOZER, M. MUDRINIC, K. MULLER, P. MURIN, B. MUSGRAVE, K. NAGANO, T. NAMSOO, R. NANIA, TH. NAUMANN, P.R. NEWMAN, D. NICHOLASS, C. NIEBUHR, A. NIGRO, A. NIKIFOROV, D. NIKITIN, Y. NING, U. NOOR, D. NOTZ, G. NOWAK, K. NOWAK, R.J. NOWAK, M. NOZICKA, A.E. NUNCIO-QUIROZ, B.Y. OH, N. OKAZAKI, K. OLIVER, B. OLIVIER, K. OLKIEWICZ, J.E. OLSSON, YU. ONISHCHUK, S. OSMAN, O. OTA, D. OZEROV, V. PALICHIK, I. PANAGOULIAS, M. PANDUROVIC, TH. PAPADOPOULOU, K. PAPAGEORGIU, A. PARENTI, C. PASCAUD, G.D. PATEL, E. PAUL, J.M. PAWLAK, B. PAWLIK, O. PEJCHAL, P.G. PELFER, A. PELLEGRINO, E. PEREZ, W. PERLANSKI, H. PERREY, A. PETRUKHIN, I. PICURIC, S. PIEC, K. PIOTRZKOWSKI, D. PITZL, R. PLACAKYTE, P. PLUCINSKI, B. POKORNY, N.S. POKROVSKIY, R. POLIFKA, A. POLINI, B. POVH, A.S. PROSKURYAKOV, M. PRZYBYCIEN, V. RADESCU, A.J. RAHMAT, N. RAICEVIC, A. RASPIAREZA, A. RAVAL, T. RAVDANDORJ, D.D. REEDER, P. REIMER, B. REISERT, Z. REN, J. REPOND, Y.D. RI, E. RIZVI, A. ROBERTSON, P. ROBMANN, B. ROLAND, P. ROLOFF, E. RON, R. ROOSEN, A. ROSTOVTSEV, M. ROTARU, I. RUBINSKY, J.E. RUIZ TABASCO, Z. RURIKOVA, S. RUSAKOV, M. RUSPA, R. SACCHI, D. SALEK, A. SALII, U. SAMSON, D.P.C. SANKEY, G. SARTORELLI, M. SAUTER, E. SAUVAN, A.A. SAVIN, D.H. SAXON, M. SCHIOPPA, S. SCHLENSTEDT, P. SCHLEPER, W.B. SCHMIDKE, S. SCHMITT, U. SCHNEEKLOTH, L. SCHOEFFEL, V. SCHONBERG, A. SCHONING, T. SCHORNER-SADENIUS, H.C. SCHULTZ-COULON, J. SCHWARTZ, F. SCIULLI, F. SEFKOW, R.N. SHAW-WEST, L.M. SHCHEGLOVA, R. SHEHZADI, S. SHIMIZU, L.N. SHTARKOV, S. SHUSHKEVICH, I. SINGH, I.O. SKILLICORN, T. SLOAN, W. SLOMINSKI, I. SMILJANIC, W.H. SMITH, V. SOLA, A. SOLANO, Y. SOLOVIEV, D. SON, P. SOPICKI, IU. SOROKIN, V. SOSNOVTSEV, D. SOUTH, V. SPASKOV, A. SPECKA, A. SPIRIDONOV, H. STADIE, L. STANCO, Z. STAYKOVA, M. STEDER, B. STELLA, A. STERN, T.P. STEWART, A. STIFUTKIN, G. STOICEA, P. STOPA, U. STRAUMANN, S. SUCHKOV, D. SUNAR, G. SUSINNO, L. SUSZYCKI, T. SYKORA, J. SZTUK, D. SZUBA, J. SZUBA, A.D. TAPPER, E. TASSI, V. TCHOULAKOV, J. TERRON, T. THEEDT, G. THOMPSON, P.D. THOMPSON, H. TIECKE, K. TOKUSHUKU, T. TOLL, F. TOMASZ, J. TOMASZEWSKA, T.H. TRAN, D. TRAYNOR, T.N. TRINH, P. TRUOL, I. TSAKOV, B. TSEEPELDORJ, T. TSURUGAI, M. TURCATO, J. TURNAU, T. TYMIENIECKA, K. URBAN, C. URIBE-ESTRADA, A. VALKAROVA, C. VALLEE, P. VAN MECHELEN, A. VARGAS TREVINO, Y. VAZDIK, M. VAZQUEZ, A. VERBYTSKYI, V. VIAZLO, S. VINOKUROVA, N.N. VLASOV, V. VOLCHINSKI, O. VOLYNETS, M. VON DEN DRIESCH, R. WALCZAK, W.A.T. WAN ABDULLAH, D. WEGENER, J.J. WHITMORE, J. WHYTE, L. WIGGERS, M. WING, CH. WISSING, M. WLASENKO, G. WOLF, H. WOLFE, K. WRONA, E. WUNSCH, A.G. YAGUES-MOLINA, S. YAMADA, Y. YAMAZAKI, R. YOSHIDA, C. YOUNGMAN, J. ZACEK, J. ZALESAK, A.F. ZARNECKI, L. ZAWIEJSKI, O. ZENAIEV, W. ZEUNER, Z. ZHANG, B.O. ZHAUTYKOV, A. ZHOKIN, C. ZHOU, A. ZICHICHI, T. ZIMMERMANN, H. ZOHRABYAN, M. ZOLKO, F. ZOMER, D.S. ZOTKIN, R. ZUS, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), ZEUS Collaboration (ukupan broj autora: 548), Precision Frontier, and Zeus (IHEF, IoP, FNWI)
Subjects: Particle physics, Nuclear and High Energy Physics, HERA, Hadron, Lepton-Nucleon Scattering, FOS: Physical sciences, Electron, Astrophysics::Cosmology and Extragalactic Astrophysics, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Standard Model, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, EP COLLISIONS, SEARCH, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, CALORIMETER, 010306 general physics, Nuclear Experiment, Physics, BOSON PRODUCTION, Muon, ZEUS (particle detector), Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HIGH-ENERGY LEPTON, High Energy Physics::Experiment, HADRON-COLLISIONS, Particle Physics - Experiment, Lepton
Abstract: A search for events containing an isolated electron or muon and missing transverse momentum produced in ep collisions is performed with the H1 and ZEUS detectors at HERA. The data were taken in the period 1994-2007 and correspond to an integrated luminosity of 0.98 fb^-1. The observed event yields are in good overall agreement with the Standard Model prediction, which is dominated by single W production. In the e+p data, at large hadronic transverse momentum PtX >25 GeV, a total of 23 events are observed compared to a prediction of 14.0 \pm 1.9. The total single W boson production cross section is measured as 1.06 \pm 0.16 (stat.) \pm 0.07 (sys) pb, in agreement with an SM expectation of 1.26 \pm 0.19 pb., 19 pages, 3 figures, v2 updated to correspond to Journal version
Published: 2010

25. Diffractive Electroproduction of rho and phi Mesons at HERA

Author: Aaron, F. D., Aldaya Martin, M., Alexa, C., Alimujiang, K., Andreev, V., Antunovic, B., Asmone, A., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkiewicz, A., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D.-J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Sálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, H1 Collaboration, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration (ukupan broj autora: 247)
Subjects: Nuclear and High Energy Physics, Particle physics, Proton, Meson, Hadron, Nuclear Theory, Lepton-Nucleon Scattering, FOS: Physical sciences, Elementary particle, Parton, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Quantum chromodynamics, Physics, 010308 nuclear & particles physics, HERA, Gluon, Physique des particules élémentaires, High Energy Physics::Experiment
Abstract: Diffractive electroproduction of ρ and φ mesons is measured at HERA with the H1 detector in the elastic and proton dissociative channels. The data correspond to an integrated luminosity of 51 pb -1. About 10500 ρ and 2000 φ events are analysed in the kinematic range of squared photon virtuality 2.5 ≤Q 2 ≤60 GeV 2, photon-proton centre of mass energy 35 ≤W ≤180 GeV and squared four-momentum transfer to the proton, 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2009

26. Deeply Virtual Compton Scattering and its Beam Charge Asymmetry in e^\pm p Collisions at HERA

Author: Aaron, F.D., Martin, M. Aldaya, Alexa, C., Alimujiang, K., Andreev, V., Antunovic, B., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J.C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Cantun Avila, K.B., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J.G., Coughlan, J.A., Cozzika, G., Cvach, J., Dainton, J.B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Wolf, E.A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkiewicz, A., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D.-J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B.R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R.C.W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M.E., Janssen, X., Jönsson, L., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M.P.J., Lange, W., Laštovička-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S.J., Mehta, A., Meyer, A.B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Mudrinic, M., Müller, K., Murín, P., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G.D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Plačakytė, R., Pokorny, B., Polifka, R., Povh, B., Radescu, V., Rahmat, A.J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J.E., Rurikova, Z., Rusakov, S., Šálek, D., Sankey, D.P.C., Sauter, M., Sauvan, E., Schmitt, S., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R.N., Shtarkov, L.N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P.D., Toll, T., Tomasz, F., Tran, T.H., Traynor, D., Trinh, T.N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Žáček, J., Zálešák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, ddc:530, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: A measurement of elastic deeply virtual Compton scattering gamma* p -> gamma p using e^+ p and e^- p collision data recorded with the H1 detector at HERA is presented. The analysed data sample corresponds to an integrated luminosity of 306 pb^-1, almost equally shared between both beam charges. The cross section is measured as a function of the virtuality Q^2 of the exchanged photon and the centre-of-mass energy W of the gamma* p system in the kinematic domain 6.5 < Q^2 < 80 GeV^2, 30 < W < 140 GeV and |t| < 1 GeV^2, where t denotes the squared momentum transfer at the proton vertex. The cross section is determined differentially in t for different Q^2 and W values and exponential t-slope parameters are derived. Using e^+ p and e^- p data samples, a beam charge asymmetry is extracted for the first time in the low Bjorken x kinematic domain. The observed asymmetry is attributed to the interference between Bethe-Heitler and deeply virtual Compton scattering processes. Experimental results are discussed in the context of two different models, one based on generalised parton distributions and one based on the dipole approach., Revised version, accepted by journal, 21 pages, 6 figures, 4 tables
Published: 2009

27. A General Search for New Phenomena at HERA

Author: Aaron, F. D., Alexa, C., Bartel, W., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Begzsuren, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Behnke, O., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Belousov, A., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Bizot, J. C., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, Matthias Ulrich, Boudry, V., Mudrinic, M., Muller, K., Murin, P., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Bozovic-Jelisavcic, I., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Bracinik, J., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Polifka, R., Povh, B., Brandt, G., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Brinkmann, M., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Andreev, V., Brisson, V., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Bruncko, D., Sloan, T., Smiljanic, Ivan, Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, Arnd E., Staykova, Z., Steder, M., Stella, B., Bunyatyan, A., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Buschhorn, G., Traynor, D., Trinh, T. N., Truol, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkarova, A., Vallee, C., Van Mechelen, P., Bystritskaya, L., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wessels, M., Wissing, Ch., Wunsch, E., Zacek, J., Campbell, A. J., Zalesak, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., H1 Collaboration, Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Antunovic, B., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deak, M., de Boer, Y., Aplin, S., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Asmone, A., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkiewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Astvatsatourov, A., Ferencei, J., Fischer, D.-J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, Samvel, Glazov, A., Glushkov, I., Goerlich, L., Backovic, S., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Baghdasaryan, A., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Barrelet, E., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jonsson, L., Jung, Andreas Werner, Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., H1 Collaboration, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, (ukupan broj autora: 256), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Nuclear and High Energy Physics, Particle physics, data analysis method, Photon, new physics: signature, electron p: interaction, Scalar (mathematics), signature [new physics], FOS: Physical sciences, momentum spectrum [transverse momentum], 01 natural sciences, transverse momentum: momentum spectrum, Standard Model, High Energy Physics - Experiment, Nuclear physics, mass spectrum, High Energy Physics - Experiment (hep-ex), phase space, 0103 physical sciences, interaction [positron p], [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], 301: 319 GeV-cms, Invariant mass, ddc:530, angular distribution, 010306 general physics, Physics, Muon, 319 GeV-cms [301], 010308 nuclear & particles physics, HERA, interaction [electron p], positron p: interaction, DESY HERA Stor, Phase space, H1, Neutrino
Abstract: A model-independent search for deviations from the Standard Model prediction is performed using the full e±p data sample collected by the H1 experiment at HERA. All event topologies involving isolated electrons, photons, muons, neutrinos and jets with transverse momenta above 20 GeV are investigated in a single analysis. Events are assigned to exclusive classes according to their final state. A dedicated algorithm is used to search for deviations from the Standard Model in the distributions of the scalar sum of transverse momenta or the invariant mass of final state particles and to quantify their significance. Variables related to angular distributions and energy sharing between final state particles are also introduced to study the final state topologies. No significant deviation from the Standard Model expectation is observed in the phase space covered by this analysis., Physics Letters B, 674 (4-5), ISSN:0370-2693, ISSN:0031-9163, ISSN:1873-2445
Published: 2009

28. Jet Production in ep Collisions at Low Q^2 and Determination of alpha_s

Author: Aaron, F.D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Bacchetta, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Beckingham, M., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Cantun Avila, K.B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J.G., Coughlan, J.A., Cozzika, G., Cvach, J., Dainton, J.B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., del Degan, M., Delvax, J., de Roeck, A., de Wolf, E.A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Essenov, S., Falkiewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Finke, L., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B.R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R.C.W., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M.E., Janssen, X., Jemanov, V., Jönsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M.P.J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S.J., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Mudrinic, M., Müller, K., Murín, P., Nankov, K., Naroska, B., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G.D., Pejchal, O., Peng, H., Perez, Emile, Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A.J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J.E., Rurikova, Z., Rusakov, S., Salek, D., Salvaire, F., Sankey, D.P.C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Shushkevich, S., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P.D., Toll, T., Tomasz, F., Tran, T.H., Traynor, D., Trinh, T.N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Valkárová, A., Vallée, Corentin, van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wessels, M., Wissing, Ch., Wünsch, E., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and (ukupan broj autora: 234)
Subjects: Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous)
Abstract: The production of jets is studied in deep-inelastic e+p scattering at low negative four momentum transfer squared 5, 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2009
Full Text: View/download PDF

29. Inclusive Photoproduction of $\rho^0,\ K^{*0}$ and $\phi$ Mesons at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossonov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, Nuclear Theory, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, ddc:530, Nuclear Experiment, High Energy Physics - Experiment
Abstract: Inclusive non-diffractive photoproduction of rho(770)^0, K^*(892)^0 and phi(1020) mesons is investigated with the H1 detector in ep collisions at HERA. The corresponding average \gamma p centre-of-mass energy is 210 GeV. The mesons are measured in the transverse momentum range 0.5, Comment: 20 pages, 4 figures, accepted by Phys. Lett. B
Published: 2009

30. Strangeness Production at low $Q^2$ in Deep-Inelastic ep Scattering at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Bacchetta, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Beckingham, M., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J. C., Boenig, M.-O., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossonov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Nankov, K., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Peng, H., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Salvaire, F., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wessels, M., Wissing, Ch., Wünsch, E., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y. C., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), (ukupan broj autora: 273), and H1 Collaboration
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Scattering, Monte Carlo method, Hadron, Strangeness production, FOS: Physical sciences, HERA, Lambda, 01 natural sciences, Charged particle, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Phase space, 0103 physical sciences, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, ddc:530, 010306 general physics, Engineering (miscellaneous)
Abstract: The production of neutral strange hadrons is investigated using deep-inelastic scattering events measured with the H1 detector at HERA. The measurements are made in the phase space defined by the negative four-momentum transfer squared of the photon 2, 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2009

31. Search for Excited Quarks in ep Collisions at HERA

Author: Aaron, F. D., Alexa, C., Alimujiang, K., Andreev, V., Antunovic, B., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), H1 Collaboration, and (ukupan broj autora: 253)
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Lattice, Hadron, Electroweak interaction, High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, Lambda, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), W and Z bosons, Excited state, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics
Abstract: A search for excited quarks is performed using the full ep data sample collected by the H1 experiment at HERA, corresponding to a total integrated luminosity of 475 pb^-1. The electroweak decays of excited quarks q* -> q gamma, q* -> q Z and q* -> q W with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for first generation excited quark production is found. Mass dependent exclusion limits on q* production cross sections and on the ratio f/Lambda of the coupling to the compositeness scale are derived within gauge mediated models. These limits extend the excluded region compared to previous excited quark searches., Revised version, with small changes to the text. 19 pages, 5 figures
Published: 2009

32. Prompt Photons in Photoproduction at HERA

Author: Aaron, F. D., Aldaya Martin, M., Alexa, C., Alimujiang, K., Andreev, V., Antunovic, B., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkiewicz, A., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Sálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schœffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Zus, R., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, H1 Collaboration, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and H1 Collaboration (ukupan broj autora: 243)
Subjects: Particle physics, Antiparticle, Photon, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Parton, Jet (particle physics), 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Quantum chromodynamics, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, HERA, Pseudorapidity, High Energy Physics::Experiment
Abstract: The production of prompt photons is measured in the photoproduction regime of electron-proton scattering at HERA. The analysis is based on a data sample corresponding to a total integrated luminosity of 340 pb^-1 collected by the H1 experiment. Cross sections are measured for photons with transverse momentum and pseudorapidity in the range 6 < Et < 15 GeV and -1.0 < eta < 2.4, respectively. Cross sections for events with an additional jet are measured as a function of the transverse energy and pseudorapidity of the jet, and as a function of the fractional momenta x_gamma and x_p carried by the partons entering the hard scattering process. The correlation between the photon and the jet is also studied. The results are compared with QCD predictions based on the collinear and on the k_T factorisation approaches., 33 pages, 9 figures
Published: 2009

33. Events with Isolated Leptons and Missing Transverse Momentum and Measurement of W Production at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Behnke, O., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., H1 Collaboration, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and (ukupan broj autora: 257)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Elementary particle, 7. Clean energy, 01 natural sciences, Standard Model, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Engineering (miscellaneous), Boson, Physics, Muon, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Fermion, HERA, High Energy Physics::Experiment, Lepton
Abstract: Events with high energy isolated electrons, muons or tau leptons and missing transverse momentum are studied using the full e^\pm p data sample collected by the H1 experiment at HERA, corresponding to an integrated luminosity of 474 pb^{-1}. Within the Standard Model, events with isolated leptons and missing transverse momentum mainly originate from the production of single W bosons. The total single W boson production cross section is measured as 1.14 \pm 0.25 (stat.) \pm 0.14 (sys.) pb, in agreement with the Standard Model expectation. The data are also used to establish limits on the WW\gamma gauge couplings and for a measurement of the W boson polarisation., Comment: 41 pages, 13 figures
Published: 2009
Full Text: View/download PDF

34. A precision measurement of the inclusive ep scattering cross section at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wallny, R., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Zus, R., (ukupan broj autora: 255), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Proton, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Parton, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, law.invention, Nuclear physics, High Energy Physics - Experiment (hep-ex), Positron, law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Collider, Nuclear Experiment, Engineering (miscellaneous), Physics, Quantum chromodynamics, Neutral current, 010308 nuclear & particles physics, HERA, High Energy Physics::Experiment, Beam (structure)
Abstract: A measurement of the inclusive deep-inelastic neutral current e+p scattering cross section is reported in the region of four-momentum transfer squared, 12, Revised version, accepted by journal, 35 pages, 10 figures
Published: 2009

35. Measurement of Leading Neutron Production in Deep-Inelastic Scattering at HERA

Author: Aaron, F. D., Alexa, C., Alimujiang, K., Andreev, V., Antunovic, B., Backovic, S., Baghdasaryan, A., Barrelet, E., Bartel, W., Begzsuren, K., Belousov, A., Bizot, J. C., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., Delcourt, B., Delvax, J., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Falkiewicz, A., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fischer, D. J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herbst, M., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hreus, T., Jacquet, M., Janssen, X., Jönsson, L., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knutsson, A., Kogler, R., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meyer, A. B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nowak, K., Olsson, J. E., Osman, S., Ozerov, D., Pahl, P., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyte, R., Pokorny, B., Polifka, R., Povh, B., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rusakov, S., Sálek, D., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmitt, S., Schœffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stoicea, G., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Turnau, J., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., von den Driesch, M., Wegener, D., Wissing, Ch., Wünsch, E., Zácek, J., Zálesák, J., Zhang, Z., Zhokin, A., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), (ukupan broj autora: 234), and H1 Collaboration
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Proton, Meson, Astrophysics::High Energy Astrophysical Phenomena, Nuclear Theory, FOS: Physical sciences, Inelastic scattering, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Neutron, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, Scattering, HERA, Deep inelastic scattering, High Energy Physics::Experiment, Nucleon
Abstract: The production of leading neutrons, where the neutron carries a large fraction x_L of the incoming proton's longitudinal momentum, is studied in deep-inelastic positron-proton scattering at HERA. The data were taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of 122 pb^{-1}. The semi-inclusive cross section is measured in the phase space defined by the photon virtuality 6 < Q^2 < 100 GeV^2, Bjorken scaling variable 1.5x10^{-4} < x < 3x10^{-2}, longitudinal momentum fraction 0.32 < x_L < 0.95 and neutron transverse momentum p_T < 0.2 GeV. The leading neutron structure function, F_2^{LN(3)}(Q^2,x,x_L), and the fraction of deep-inelastic scattering events containing a leading neutron are studied as a function of Q^2, x and x_L. Assuming that the pion exchange mechanism dominates leading neutron production, the data provide constraints on the shape of the pion structure function., 30 pages, 9 figures
Published: 2009

36. Study of Charm Fragmentation into D^{*\pm} Mesons in Deep-Inelastic Scattering at HERA

Author: Aaron, F. D., Alexa, C., Barrelet, E., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Bartel, W., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Beckingham, M., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Begzsuren, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Behnke, O., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Belousov, A., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Berger, N., Nankov, K., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Bizot, J. C., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Boenig, M.-O., Peng, H., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Boudry, V., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Andreev, V., Bozovic-Jelisavcic, I., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Salvaire, F., Sankey, D. P. C., Sauter, M., Sauvan, E., Bracinik, J., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Brandt, G., Shushkevich, S., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Brinkmann, M., Steder, M., Stella, B., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Brisson, V., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Bruncko, D., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wessels, M., Wissing, Ch., Bunyatyan, A., Wünsch, E., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y. C., Zimmermann, T., Zohrabyan, H., Buschhorn, G., Zomer, F., H1 Collaboration, Bystritskaya, L., Campbell, A. J., Antunovic, B., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Aplin, S., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Asmone, A., Dodonov, V., Dossanov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Astvatsatourov, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Bacchetta, A., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Backovic, S., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herrera, G., Hildebrandt, M., Baghdasaryan, A., Hiller, K. H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), (ukupan broj autora: 271), and H1 Collaboration
Subjects: Particle physics, Meson, Physics and Astronomy (miscellaneous), High Energy Physics::Lattice, Hadron, FOS: Physical sciences, Parton, 01 natural sciences, Charm quark, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Quantum chromodynamics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Deep inelastic scattering, DGLAP, High Energy Physics::Experiment
Abstract: The process of charm quark fragmentation is studied using $D^{*\pm}$ meson production in deep-inelastic scattering as measured by the H1 detector at HERA. Two different regions of phase space are investigated defined by the presence or absence of a jet containing the $D^{*\pm}$ meson in the event. The parameters of fragmentation functions are extracted for QCD models based on leading order matrix elements and DGLAP or CCFM evolution of partons together with string fragmentation and particle decays. Additionally, they are determined for a next-to-leading order QCD calculation in the fixed flavour number scheme using the independent fragmentation of charm quarks to $D^{*\pm}$ mesons., 33 pages, submitted to EPJC
Published: 2008

37. Multi-Lepton Production at High Transverse Momenta in ep Collisions at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Bacchetta, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Beckingham, M., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J. C., Boenig, M.-O., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossonov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Finke, L., Fleischer, M., Fomenko, A., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Hennekemper, E., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Johnson, D. P., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Nankov, K., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Peng, H., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Salvaire, F., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Shushkevich, S., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., Sopicki, P., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wessels, M., Wissing, Ch., Wünsch, E., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y. C., Zimmermann, T., Zohrabyan, H., Zomer, F., H1 Collaboration, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and (ukupan broj autora: 274)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, Luminosity (scattering theory), 010308 nuclear & particles physics, Scalar (mathematics), High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, Electron, 01 natural sciences, Standard Model, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Phase space, 0103 physical sciences, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics, Lepton
Abstract: Processes leading to a final state with at least two high transverse momentum leptons (electrons or muons) are studied using the full e ± p data sample collected by the H1 experiment at HERA. The data correspond to an integrated luminosity of 463 pb -1. Di-lepton and tri-lepton event classes are investigated. Cross sections of the production of e + e - and μ + μ - pairs are derived in a restricted phase space dominated by photon-photon collisions. In general, good agreement is found with Standard Model predictions. Events are observed with a total scalar sum of lepton transverse momenta above 100 GeV where the Standard Model expectation is low. In this region, combining di-lepton and tri-lepton classes, five events are observed in e + p collisions, compared to a Standard Model expectation of 0.96 ± 0.12, while no such event is observed in e - p data for 0.64 ± 0.09 expected. © 2008 Elsevier B.V. All rights reserved., 0, DESY-08-065 / arxiv:0806.3987, SCOPUS: ar.j, info:eu-repo/semantics/published
Published: 2008
Full Text: View/download PDF

38. A Search for Excited Neutrinos in $e^-p$ Collisions at HERA

Author: Aaron, F. D., Alexa, C., Andreev, V., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Beckingham, M., Begzsuren, K., Behnke, O., Belousov, A., Berger, N., Bizot, J. C., Boenig, M.-O., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deák, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dossonov, A., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eisele, F., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Finke, L., Fleischer, M., Fomenko, A., Franke, G., Frisson, T., Gabathuler, E., Gayler, J., Ghazaryan, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Helebrant, C., Henderson, R. C. W., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Johnson, D. P., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Kogler, R., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Kutak, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Mudrinic, M., Müller, K., Murín, P., Nankov, K., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Pejchal, O., Peng, H., Perez, E., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Polifka, R., Povh, B., Preda, T., Radescu, V., Rahmat, A. J., Raicevic, N., Raspiareza, A., Ravdandorj, T., Reimer, P., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rotaru, M., Ruiz Tabasco, J. E., Rurikova, Z., Rusakov, S., Salek, D., Salvaire, F., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Wegener, D., Wessels, M., Wissing, Ch., Wolf, R., Wünsch, E., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y. C., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and (ukupan broj autora: 276)
Subjects: Physics, Nuclear and High Energy Physics, Gauge boson, Particle physics, 010308 nuclear & particles physics, Electroweak interaction, Hadron, High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, 01 natural sciences, Luminosity, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Excited state, 0103 physical sciences, W′ and Z′ bosons, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physique des particules élémentaires, High Energy Physics::Experiment, ddc:530, Neutrino, 010306 general physics
Abstract: A search for first generation excited neutrinos is performed using the full e - p data sample collected by the H1 experiment at HERA at a centre-of-mass energy of 319 GeV, corresponding to a total luminosity of 184 pb -1. The electroweak decays of excited neutrinos ν * → ν γ, ν * → ν Z and ν * → e W with subsequent hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited neutrino production is found. Mass dependent exclusion limits on ν * production cross sections and on the ratio of the coupling to the compositeness scale f / Λ are derived within gauge mediated models. A limit on f / Λ, independent of the relative couplings to the SU (2) and U (1) gauge bosons, is also determined. These limits extend the excluded region to higher masses than has been possible in previous excited neutrino searches. © 2008 Elsevier B.V. All rights reserved., 0, DESY-08-009 / arxiv:0802.1858, SCOPUS: ar.j, H1 Collaboration., info:eu-repo/semantics/published
Published: 2008

39. Production of $D^{*\pm}$ Mesons with Dijets in Deep-Inelastic Scattering at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Coppens, Y.R., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., de Boer, Y., Delcourt, B., del Degan, M., de Roeck, A., de Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Finke, L., Fleischer, M., Flucke, G., Fomenko, A., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janssen, X., Jemanov, V., Jönsson, L., Johnson, C.L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Landon, M.P.J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., List, J., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Marage, P., Marshall, R., Marti, L., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peng, H., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Rahmat, A.J., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauter, M., Sauvan, E., Sch¨atzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Steder, M., Stella, B., Stiewe, J., Stoilov, A., Straumann, U., Sunar, D., Tchoulakov, V., Thompson, G., Thompson, P.D., Toll, T., Tomasz, F., Traynor, D., Trinh, T.N., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Urban, Martin, Usik, A., Utkin, D., Valkarova, A., Vallee, C., van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vinokurova, S., Volchinski, V., Wacker, K., Weber, G., Weber, R., Wegener, D., Werner, C., Wessels, M., Wessling, B., Wissing, C., Wolf, R., Wünsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Gouzevitch, M., Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, ddc:530, High Energy Physics::Experiment, Nuclear Experiment, High Energy Physics - Experiment
Abstract: Inclusive D* production is measured in deep-inelastic ep scattering at HERA with the H1 detector. In addition, the production of dijets in events with a D* meson is investigated. The analysis covers values of photon virtuality 2< Q^2, 31 pages, 7 figures
Published: 2007

40. Measurement of inclusive jet production in deep-inelastic scattering at high Q2 and determination of the strong coupling

Author: Aktas, A., Alexa, C., Andreev, V., Anthonis, T., Antunovic, B., Aplin, S., Asmone, A., Astvatsatourov, A., Backovic, S., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Beckingham, M., Begzsuren, K., Behnke, O., Behrendt, O., Belousov, A., Berger, N., Bizot, J. C., Boenig, M.-O., Boudry, V., Bozovic-Jelisavcic, I., Bracinik, J., Brandt, G., Brinkmann, M., Brisson, V., Bruncko, D., Büsser, F. W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A. J., Cantun Avila, K. B., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Cholewa, A., Contreras, J. G., Coughlan, J. A., Cozzika, G., Cvach, J., Dainton, J. B., Daum, K., Deak, M., de Boer, Y., Delcourt, B., Del Degan, M., Delvax, J., De Roeck, A., De Wolf, E. A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Eliseev, A., Elsen, E., Essenov, S., Falkewicz, A., Faulkner, P. J. W., Favart, L., Fedotov, A., Felst, R., Feltesse, J., Ferencei, J., Finke, L., Fleischer, M., Fomenko, A., Franke, G., Frisson, T., Gabathuler, E., Gayler, J., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Göttlich, M., Gogitidze, N., Gorbounov, S., Gouzevitch, M., Grab, C., Greenshaw, T., Grell, B. R., Grindhammer, G., Habib, S., Haidt, D., Hansson, M., Heinzelmann, G., Helebrant, C., Henderson, R. C. W., Henschel, H., Herrera, G., Hildebrandt, M., Hiller, K. H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Jacquet, M., Janssen, M. E., Janssen, X., Jemanov, V., Jönsson, L., Johnson, D. P., Jung, A. W., Jung, H., Kapichine, M., Katzy, J., Kenyon, I. R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knutsson, A., Korbel, V., Kostka, P., Kraemer, M., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Krüger, K., Landon, M. P. J., Lange, W., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Li, G., Lindfeld, L., Lipka, K., Liptaj, A., List, B., List, J., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lytkin, L., Makankine, A., Malinovski, E., Marage, P., Marti, Ll., Martisikova, M., Martyn, H.-U., Maxfield, S. J., Mehta, A., Meier, K., Meyer, A. B., Meyer, H., Meyer, J., Michels, V., Mikocki, S., Milcewicz-Mika, I., Mohamed, A., Moreau, F., Morozov, A., Morris, J. V., Mozer, M. U., Müller, K., Murín, P., Nankov, K., Naroska, B., Naumann, Th., Newman, P. R., Niebuhr, C., Nikiforov, A., Nowak, G., Nowak, K., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J. E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Pandurovic, M., Papadopoulou, Th., Pascaud, C., Patel, G. D., Peng, H., Perez, E., Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Picuric, I., Piec, S., Pitzl, D., Placakyt\. e, R., Povh, B., Preda, T., Prideaux, P., Radescu, V., Rahmat, A. J., Raicevic, N., Ravdandorj, T., Reimer, P., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D. P. C., Sauter, M., Sauvan, E., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schöning, A., Schultz-Coulon, H.-C., Sefkow, F., Shaw-West, R. N., Sheviakov, I., Shtarkov, L. N., Sloan, T., Smiljanic, I., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Staykova, Z., Steder, M., Stella, B., Stiewe, J., Straumann, U., Sunar, D., Sykora, T., Tchoulakov, V., Thompson, G., Thompson, P. D., Toll, T., Tomasz, F., Tran, T. H., Traynor, D., Trinh, T. N., Truöl, P., Tsakov, I., Tseepeldorj, B., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, K., Utkin, D., Valkárová, A., Vallée, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Vinokurova, S., Volchinski, V., Weber, G., Weber, R., Wegener, D., Werner, C., Wessels, M., Wissing, Ch., Wolf, R., Wünsch, E., Xella, S., Yan, W., Yeganov, V., Zácek, J., Zálesák, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y. C., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Département d'Astrophysique, de physique des Particules, de physique Nucléaire et de l'Instrumentation Associée (DAPNIA), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, ddc:530, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: Inclusive jet production is studied in neutral current deep-inelastic positron-proton scattering at large four momentum transfer squared Q^2>150 GeV^2 with the H1 detector at HERA. Single and double differential inclusive jet cross sections are measured as a function of Q^2 and of the transverse energy E_T of the jets in the Breit frame. The measurements are found to be well described by calculations at next-to-leading order in perturbative QCD. The running of the strong coupling is demonstrated and the value of alpha_s(M_Z) is determined. The ratio of the inclusive jet cross section to the inclusive neutral current cross section is also measured and used to extract a precise value for alpha_s(M_Z)=0.1193+/-0.0014(exp.)^{+0.0047}_{-0.0030}(th.)+/-0.0016(pdf)., 21 pages, 7 figures, submitted to Phys. Lett. B
Published: 2007

41. Tau Lepton Production in $ep$ Collisions at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., De Boer, Y., Delcourt, B., De Roeck, A., Desch, K., De Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration
Subjects: Physics, Hadronic decay, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, FOS: Physical sciences, HERA, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), Standard Model (mathematical formulation), 0103 physical sciences, Transverse momentum, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics, Engineering (miscellaneous), Lepton
Abstract: The production of tau leptons in ep collisions is investigated using data recorded by the H1 detector at HERA in the period 1994-2000. Tau leptons are identified by detecting their decay products, using leptonic and hadronic decay modes. The cross section for the production of tau lepton pairs is measured for the first time at HERA. Furthermore, a search for events with an energetic isolated tau lepton and with large missing transverse momentum is performed. The results are found to be in agreement with the Standard Model predictions., Comment: 28 pages, 6 figures, 6 tables
Published: 2006

42. Measurement and QCD Analysis of the Diffractive Deep-Inelastic Scattering Cross Section at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., de Boer, Y., Delcourt, B., de Roeck, A., Desch, K., de Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Trinh, T.N., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and H1 Collaboration
Subjects: Quantum chromodynamics, Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, FOS: Physical sciences, Parton, HERA, Deep inelastic scattering, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Gluon, Nuclear physics, Pomeron, High Energy Physics - Experiment (hep-ex), DGLAP, Distribution function, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Engineering (miscellaneous)
Abstract: A detailed analysis is presented of the diffractive deep-inelastic scattering process $ep\to eXY$, where $Y$ is a proton or a low mass proton excitation carrying a fraction $1 - \xpom > 0.95$ of the incident proton longitudinal momentum and the squared four-momentum transfer at the proton vertex satisfies $|t, Comment: 59 pages, 19 figures, 6 tables
Published: 2006
Full Text: View/download PDF

43. Search for a Narrow Baryonic Resonance Decaying to $K^0_s p$ or $K^0_s \bar{p}$ in Deep Inelastic Scattering at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., de Boer, Y., Delcourt, B., de Roeck, A., Desch, K., de Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: A search for a narrow baryonic resonance decaying to $K^0_s p$ or $K^0_s \bar p$ is carried out in deep inelastic ep scattering with the H1 detector at HERA. Such a resonance could be a strange pentaquark \thplns, evidence for which has been reported by several experiments. The $K^0_s p$ and $K^0_s \bar p$ invariant mass distributions presented here do not show any significant peak in the mass range from threshold up to 1.7 GeV. Mass dependent upper limits on $\sigma(ep \to e \thplf X)\times BR(\thplf \to K^0 p)$ are obtained at the 95% confidence level., Comment: 13 pages, 4 figures
Published: 2006
Full Text: View/download PDF

44. Diffractive Deep-Inelastic Scattering with a Leading Proton at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., De Boer, Y., Delcourt, B., De Roeck, A., Desch, K., De Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Trinh, T.N., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1 Collaboration
Subjects: Physics, Photon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Hadron, FOS: Physical sciences, HERA, Deep inelastic scattering, 01 natural sciences, 7. Clean energy, Vertex (geometry), High Energy Physics - Experiment, Nuclear physics, Pomeron, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Rapidity, ddc:530, 010306 general physics, Engineering (miscellaneous), Scaling
Abstract: The cross section for the diffractive deep-inelastic scattering process $ep \to e X p$ is measured, with the leading final state proton detected in the H1 Forward Proton Spectrometer. The data analysed cover the range \xpom, 32 pages, 9 figures, 8 tables
Published: 2006

45. Photoproduction of Dijets with High Transverse Momenta at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., de Boer, Y., Delcourt, B., de Roeck, A., Desch, K., de Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Z., Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Nuclear and High Energy Physics, Particle physics, Photon, FOS: Physical sciences, Parton, Jet (particle physics), 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, law.invention, Nuclear physics, Momentum, High Energy Physics - Experiment (hep-ex), law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Collider, Nuclear Experiment, Quantum chromodynamics, Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, High Energy Physics::Experiment
Abstract: Differential dijet cross sections are measured in photoproduction in the region of photon virtualities Q^2 < 1 GeV^2 with the H1 detector at the HERA ep collider using an integrated luminosity of 66.6 pb^{-1}. Jets are defined with the inclusive k_T algorithm and a minimum transverse momentum of the leading jet of 25 GeV is required. Dijet cross sections are measured in direct and resolved photon enhanced regions separately. Longitudinal proton momentum fractions up to 0.7 are reached. The data compare well with predictions from Monte Carlo event generators based on leading order QCD and parton showers and with next-to-leading order QCD calculations corrected for hadronisation effects., 18 pages, 5 figures, 5 tables
Published: 2006
Full Text: View/download PDF

46. Search for Doubly-Charged Higgs Boson Production at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Aplin, S., Asmone, A., Astvatsatourov, A., Babaev, A., Backovic, S., Bahr, J., Baghdasaryan, A., Baranov, P., Barrelet, E., Bartel, W., Baudrand, S., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Bizot, J.C., Boenig, M.-O., Boudry, V., Bracinik, J., Brandt, G., Brisson, V., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Cerny, V., Chekelian, V., Contreras, J.G., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., De Boer, Y., Delcourt, B., De Roeck, A., Desch, K., De Wolf, E.A., Diaconu, C., Dodonov, V., Dubak, A., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Erdmann, W., Essenov, S., Falkewicz, A., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Finke, L., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Fomenko, A., Foresti, I., Franke, G., Frisson, T., Gabathuler, E., Garutti, E., Gayler, J., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Glazov, A., Glushkov, I., Goerlich, L., Goettlich, M., Gogitidze, N., Gorbounov, S., Goyon, C., Grab, C., Greenshaw, T., Gregori, M., Grell, B.R., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Hildebrandt, M., Hiller, K.H., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Hreus, T., Hussain, S., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, A.W., Jung, H., Kapichine, M., Katzy, J., Keller, N., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Korbel, V., Kostka, P., Krastev, K., Kretzschmar, J., Kropivnitskaya, A., Kruger, K., Kuckens, J., Landon, M.P.J., Lange, W., Lastovicka, T., Lastovicka-Medin, G., Laycock, P., Lebedev, A., Leibenguth, G., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., Liptaj, A., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lucaci-Timoce, A.-I., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mladenov, D., Mohamed, A., Moreau, F., Morozov, A., Morris, J.V., Mozer, M.U., Muller, K., Murin, P., Nankov, K., Naroska, B., Naumann, T., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Osman, S., Ozerov, D., Palichik, V., Panagoulias, I., Papadopoulou, T., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perez-Astudillo, D., Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Portheault, B., Povh, B., Prideaux, P., Raicevic, N., Reimer, P., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Salvaire, F., Sankey, D.P.C., Sauvan, E., Schätzel, S., Schilling, F.-P., Schmidt, S., Schmitt, S., Schmitz, C., Schoeffel, L., Schoning, A., Schultz-Coulon, H.-C., Sedlak, K., Sefkow, F., Shaw-West, R.N., Sheviakov, I., Shtarkov, L.N., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsakov, I., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Van Mechelen, P., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Vujicic, B., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Wigmore, C., Wissing, C., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zhu, Y.C., Zimmermann, J., Zimmermann, T., Zohrabyan, H., Zomer, F., Sirois, Y., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Muon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Yukawa potential, FOS: Physical sciences, Charge (physics), HERA, Electron, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Higgs boson, Physique des particules élémentaires, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, High Energy Physics::Experiment, 010306 general physics, Boson, Lepton
Abstract: A search for the single production of doubly-charged Higgs bosons H ± ± in ep collisions is presented. The signal is searched for via the Higgs decays into a high mass pair of same charge leptons, one of them being an electron. The analysis uses up to 118 pb -1 of ep data collected by the H1 experiment at HERA. No evidence for doubly-charged Higgs production is observed and mass dependent upper limits are derived on the Yukawa couplings h e l of the Higgs boson to an electron-lepton pair. Assuming that the doubly-charged Higgs only decays into an electron and a muon via a coupling of electromagnetic strength h e μ = sqrt(4 π α em) ≃ 0.3, a lower limit of 141 GeV on the H ± ± mass is obtained at the 95% confidence level. For a doubly-charged Higgs decaying only into an electron and a tau and a coupling h e τ ≃ 0.3, masses below 112 GeV are ruled out. © 2006 Elsevier B.V. All rights reserved., 0, DESY-06-038 / hep-ex/0604027, H1 Collaboration., info:eu-repo/semantics/published
Published: 2006
Full Text: View/download PDF

47. Measurement of Prompt Photon Cross Sections in Photoproduction at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Berndt, T., Bizot, J.C., Bohme, J., Boenig, M.-O., Boudry, V., Bracinik, J., Brisson, V., Broker, H.-B., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Chekelian, V., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Delcourt, B., Demirchyan, R., Roeck, A. De, Desch, K., Wolf, E.A. De, Diaconu, C., Dingfelder, J., Dodonov, V., Dubak, A., Duprel, C., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garutti, E., Garvey, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gorbounov, S., Grab, C., Grassler, H., Greenshaw, T., Gregori, M., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Haller, J., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Heremans, R., Herrera, G., Herynek, I., Heuer, R.-D., Hildebrandt, M., Hiller, K.H., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Katzy, J., Keller, N., Kennedy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Koblitz, B., Korbel, V., Kostka, P., Koutouev, R., Kropivnitskaya, A., Kroseberg, J., Kuckens, J., Kuhr, T., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marks, J., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michine, S., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mohamed, A., Moreau, F., Morozov, A., Morozov, I., Morris, J.V., Mozer, M.U., Muller, K., Murn, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Ossoskov, G., Ozerov, D., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Poschl, R., Portheault, B., Povh, B., Raicevic, N., Ratiani, Z., Reimer, P., Reisert, B., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Rybicki, K., Sankey, D.P.C., Sauvan, E., Schatzel, S., Scheins, J., Schilling, F.-P., Schleper, P., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schroder, V., Schultz-Coulon, H.-C., Schwanenberger, C., Sedlak, K., Sefkow, F., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Uraev, A., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Mechelen, P. Van, Remortel, N. Van, Trevino, A. Vargas, Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Winter, G.-G., Wissing, Ch., Woehrling, E.-E., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and H1
Subjects: Physics, Particle physics, Photon, Physics and Astronomy (miscellaneous), Proton, 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Perturbative QCD, HERA, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, Momentum, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Center of mass, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Event (particle physics)
Abstract: Results are presented on the photoproduction of isolated prompt photons, inclusively and associated with jets, in the gamma p center of mass energy range 142 < W < 266 GeV. The cross sections are measured for the transverse momentum range of the photons 5 < E_T^gamma < 10 GeV and for associated jets with E_T^jet > 4.5 GeV. They are measured differentially as a function of E_T^gamma, E_T^jet, the pseudorapidities eta^gamma and eta^jet and estimators of the momentum fractions x_gamma and x_p of the incident photon and proton carried by the constituents participating in the hard process. In order to further investigate the underlying dynamics, the angular correlation between the prompt photon and the jet in the transverse plane is studied. Predictions by perturbative QCD calculations in next to leading order are about 30% below the inclusive prompt photon data after corrections for hadronisation and multiple interactions, but are in reasonable agreement with the results for prompt photons associated with jets. Comparisons with the predictions of the event generators PYTHIA and HERWIG are also presented., 21 pages, 6 figures, 3 tables
Published: 2005

48. Search for bosonic stop decays in R-parity violating supersymmetry in $e^+p$ collisions at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Berndt, T., Bizot, J.C., Bohme, J., Boenig, M.-O., Boudry, V., Bracinik, J., Brisson, V., Broker, H.-B., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Chekelian, V., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Delcourt, B., Demirchyan, R., de Roeck, A., Desch, K., de Wolf, E.A., Diaconu, C., Dingfelder, J., Dodonov, V., Dubak, A., Duprel, C., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garutti, E., Garvey, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Ginzburgskaya, S., Goerlich, L., Gogitidze, N., Gorbounov, S., Grab, C., Grassler, H., Greenshaw, T., Gregori, M., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Haller, J., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Herrera, G., Herynek, I., Heuer, R.-D., Hildebrandt, M., Hiller, K.H., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Katzy, J., Keller, N., Kennedy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Koblitz, B., Korbel, V., Kostka, P., Koutouev, R., Kropivnitskaya, A., Kroseberg, J., Kruger, K., Kuckens, J., Kuhr, T., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marks, J., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mohamed, A., Moreau, F., Morozov, A., Morozov, I., Morris, J.V., Mozer, M.U., Muller, K., Murn, P., Nagovizin, V., Nankov, K., Naroska, B., Naumann, J., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Ossoskov, G., Ozerov, D., Paramonov, A., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Poschl, R., Portheault, B., Povh, B., Raicevic, N., Reimer, P., Reisert, B., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Rybicki, K., Sankey, D.P.C., Sauvan, E., Schatzel, S., Scheins, J., Schilling, F.-P., Schleper, P., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schroder, V., Schultz-Coulon, H.-C., Schwanenberger, C., Sedlak, K., Sefkow, F., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Uraev, A., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., van Mechelen, P., van Remortel, N., Vargas Trevino, A., Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Winter, G.-G., Wissing, Ch., Woehrling, E.-E., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhelezov, A., Zhokin, A., Zohrabyan, H., Zomer, F., Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), and Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS)
Subjects: High Energy Physics - Experiment (hep-ex), High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: A search for scalar top quarks in R-parity violating supersymmetry is performed in e^+ p collisions at HERA using the H1 detector. The data, taken at sqrt{s}=319 GeV and 301 GeV, correspond to an integrated luminosity of 106 pb^-1. The resonant production of scalar top quarks \tilde{t} in positron quark fusion via an R-parity violating Yukawa coupling lambda' is considered with the subsequent bosonic stop decay \tilde{t} -> \tilde{b} W. The R-parity violating decay of the sbottom quark tilde{b} -> d \bar{nu_e} and leptonic and hadronic W decays are considered. No evidence for stop production is found in the search for bosonic stop decays nor in a search for the direct R-parity violating decay \tilde{t} -> eq. Mass dependent limits on lambda' are obtained in the framework of the Minimal Supersymmetric Standard Model. Stop quarks with masses up to 275 GeV can be excluded at the 95% confidence level for a Yukawa coupling of electromagnetic strength., 20 pages, 5 figures and 2 tables
Published: 2004

49. Search for Single Top Quark Production in ep Collisions at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, C., Berndt, T., Bizot, J.C., Bohme, J., Boenig, M.O., Boudry, V., Bracinik, J., Braunschweig, W., Brisson, V., Broker, H.B., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Chekelian, V., Clarke, D., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cousinou, M.C., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Delcourt, B., Delerue, N., Demirchyan, R., de Roeck, A., de Wolf, E.A., Diaconu, C., Dingfelder, J., Dodonov, V., Dowell, J.D., Dubak, A., Duprel, C., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garvey, J., Gassner, J., Gayler, Joerg., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gorbounov, S., Grab, C., Grabski, V., Grassler, H., Greenshaw, T., Gregori, M., Grindhammer, G., Haidt, D., Hajduk, L., Haller, J., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Heremans, R., Herrera, G., Herynek, I., Hildebrandt, M., Hiller, K.H., Hladky, J., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Ibbotson, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, C., Johnson, D.P., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Katzy, J., Keil, F., Keller, N., Kennedy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Kluge, T., Knies, G., Koblitz, B., Kolya, S.D., Korbel, V., Kostka, P., Koutouev, R., Kropivnitskaya, A., Kroseberg, J., Kueckens, J., Kuhr, T., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebedev, A., Leissner, B., Lemrani, R., Lendermann, V., Levonian, S., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lueders, H., Luders, S., Luke, D., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marks, J., Marshall, R., Martyn, H.U., Martyniak, J., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michine, S., Mikocki, S., Milstead, D., Moreau, F., Morozov, A., Morozov, I., Morris, J.V., Muller, K., Murin, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, T., Newman, P.R., Niebergall, F., Niebuhr, C., Nikitin, D., Nowak, G., Nozicka, M., Olivier, B., Olsson, J.E., Ossoskov, G., Ozerov, D., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Petrukhin, A., Pitzl, D., Poschl, R., Povh, B., Raicevic, N., Rauschenberger, J., Reimer, P., Reisert, B., Risler, C., Rizvi, E., Robmann, P., Roosen, R., Rostovtsev, A., Rusakov, S., Rybicki, K., Sankey, D.P.C., Sauvan, E., Schatzel, S., Scheins, J., Schilling, F.P., Schleper, P., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schroder, V., Schultz-Coulon, H.C., Schwanenberger, C., Sedlak, K., Sefkow, F., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Turney, J.E., Tzamariudaki, E., Uraev, A., Urban, Martin, Usik, A., Valkar, S., Valkarova, A., Vallee, C., van Mechelen, P., Vargas Trevino, A., Vassiliev, S., Vazdik, Y., Veelken, C., Vest, A., Vichnevski, A., Vinokurova, S., Volchinski, V., Wacker, K., Wagner, J., Waugh, B., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Winde, M., Winter, G.G., Wissing, C., Woehrling, E.E., Wunsch, E., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zomer, F., Zur Nedden, M., Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), and H1 Collaboration
Subjects: Quark, Physics, Particle physics, Top quark, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, FOS: Physical sciences, Top quark condensate, HERA, Omega baryon, Bottom quark, Standard Model, Sigma baryon, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Engineering (miscellaneous)
Abstract: A search for single top quark production is performed in e±p collisions at HERA. The search exploits data corresponding to an integrated luminosity of 118.3 pb-1. A model for the anomalous production of top quarks in a flavour changing neutral current process involving a tuγ coupling is investigated. Decays of top quarks into a b quark and a W boson are considered in the leptonic and the hadronic decay channels of the W. Both a cut-based analysis and a multivariate likelihood analysis are performed to discriminate anomalous top quark production from Standard Model background processes. In the leptonic channel, 5 events are found while 1.31 ± 0.22 events are expected from the Standard Model background. In the hadronic channel, no excess above the expectation for Standard Model processes is found. These observations lead to a cross section σ(ep→etX)=0.29+0.15−0.14 pb at s√=319 GeV. Alternatively, assuming that the observed events are due to a statistical fluctuation, upper limits of 0.55 pb on the anomalous top production cross section and of 0.27 on the tuγ coupling κtuγ are established at the 95% confidence level., The European Physical Journal C, 33 (1), ISSN:1434-6044, ISSN:1434-6052
Published: 2004

50. Measurement of the proton structure function $F_2$ at low $Q^2$ in QED Compton scattering at HERA

Author: Aktas, A., Andreev, V., Anthonis, T., Asmone, A., Babaev, A., Backovic, S., Bahr, J., Baranov, P., Barrelet, E., Bartel, W., Baumgartner, S., Becker, J., Beckingham, M., Behnke, O., Behrendt, O., Belousov, A., Berger, Ch., Berger, N., Berndt, T., Bizot, J.C., Bohme, J., Boenig, M.-O., Boudry, V., Bracinik, J., Brisson, V., Broker, H.-B., Brown, D.P., Bruncko, D., Busser, F.W., Bunyatyan, A., Buschhorn, G., Bystritskaya, L., Campbell, A.J., Caron, S., Cassol-Brunner, F., Cerny, K., Chekelian, V., Collard, C., Contreras, J.G., Coppens, Y.R., Coughlan, J.A., Cox, B.E., Cozzika, G., Cvach, J., Dainton, J.B., Dau, W.D., Daum, K., Delcourt, B., Demirchyan, R., Roeck, A. De, Desch, K., Wolf, E.A. De, Diaconu, C., Dingfelder, J., Dodonov, V., Dubak, A., Duprel, C., Eckerlin, G., Efremenko, V., Egli, S., Eichler, R., Eisele, F., Ellerbrock, M., Elsen, E., Erdmann, M., Erdmann, W., Faulkner, P.J.W., Favart, L., Fedotov, A., Felst, R., Ferencei, J., Fleischer, M., Fleischmann, P., Fleming, Y.H., Flucke, G., Flugge, G., Fomenko, A., Foresti, I., Formanek, J., Franke, G., Frising, G., Gabathuler, E., Gabathuler, K., Garutti, E., Garvey, J., Gayler, J., Gerhards, R., Gerlich, C., Ghazaryan, S., Goerlich, L., Gogitidze, N., Gorbounov, S., Grab, C., Grassler, H., Greenshaw, T., Gregori, M., Grindhammer, G., Gwilliam, C., Haidt, D., Hajduk, L., Haller, J., Hansson, M., Heinzelmann, G., Henderson, R.C.W., Henschel, H., Henshaw, O., Heremans, R., Herrera, G., Herynek, I., Heuer, R.-D., Hildebrandt, M., Hiller, K.H., Hoting, P., Hoffmann, D., Horisberger, R., Hovhannisyan, A., Ibbotson, M., Ismail, M., Jacquet, M., Janauschek, L., Janssen, X., Jemanov, V., Jonsson, L., Johnson, D.P., Jung, H., Kant, D., Kapichine, M., Karlsson, M., Katzy, J., Keller, N., Kennedy, J., Kenyon, I.R., Kiesling, C., Klein, M., Kleinwort, C., Klimkovich, T., Kluge, T., Knies, G., Knutsson, A., Koblitz, B., Korbel, V., Kostka, P., Koutouev, R., Kropivnitskaya, A., Kroseberg, J., Kuckens, J., Kuhr, T., Landon, M.P.J., Lange, W., Lastovicka, T., Laycock, P., Lebedev, A., Leiner, B., Lemrani, R., Lendermann, V., Levonian, S., Lindfeld, L., Lipka, K., List, B., Lobodzinska, E., Loktionova, N., Lopez-Fernandez, R., Lubimov, V., Lueders, H., Luke, D., Lux, T., Lytkin, L., Makankine, A., Malden, N., Malinovski, E., Mangano, S., Marage, P., Marks, J., Marshall, R., Martisikova, M., Martyn, H.-U., Maxfield, S.J., Meer, D., Mehta, A., Meier, K., Meyer, A.B., Meyer, H., Meyer, J., Michine, S., Mikocki, S., Milcewicz-Mika, I., Milstead, D., Mohamed, A., Moreau, F., Morozov, A., Morozov, I., Morris, J.V., Mozer, M.U., Muller, K., Murn, P., Nagovizin, V., Naroska, B., Naumann, J., Naumann, Th., Newman, P.R., Niebuhr, C., Nikiforov, A., Nikitin, D., Nowak, G., Nozicka, M., Oganezov, R., Olivier, B., Olsson, J.E., Ossoskov, G., Ozerov, D., Pascaud, C., Patel, G.D., Peez, M., Perez, Emile, Perieanu, A., Petrukhin, A., Pitzl, D., Placakyte, R., Poschl, R., Portheault, B., Povh, B., Raicevic, N., Ratiani, Z., Reimer, P., Reisert, B., Rimmer, A., Risler, C., Rizvi, E., Robmann, P., Roland, B., Roosen, R., Rostovtsev, A., Rurikova, Z., Rusakov, S., Rybicki, K., Sankey, D.P.C., Sauvan, E., Schatzel, S., Scheins, J., Schilling, F.-P., Schleper, P., Schmidt, S., Schmitt, S., Schneider, M., Schoeffel, L., Schoning, A., Schroder, V., Schultz-Coulon, H.-C., Schwanenberger, C., Sedlak, K., Sefkow, F., Sheviakov, I., Shtarkov, L.N., Sirois, Y., Sloan, T., Smirnov, P., Soloviev, Y., South, D., Spaskov, V., Specka, A., Spitzer, H., Stamen, R., Stella, B., Stiewe, J., Strauch, I., Straumann, U., Tchoulakov, V., Thompson, G., Thompson, P.D., Tomasz, F., Traynor, D., Truol, P., Tsipolitis, G., Tsurin, I., Turnau, J., Tzamariudaki, E., Uraev, A., Urban, Martin, Usik, A., Utkin, D., Valkar, S., Valkarova, A., Vallee, C., Mechelen, P. Van, Remortel, N. Van, Trevino, A. Vargas, Vazdik, Y., Veelken, C., Vest, A., Vinokurova, S., Volchinski, V., Wacker, K., Wagner, J., Weber, G., Weber, R., Wegener, D., Werner, C., Werner, N., Wessels, M., Wessling, B., Winter, G.-G., Wissing, Ch., Woehrling, E.-E., Wolf, R., Wunsch, E., Xella, S., Yan, W., Yeganov, V., Zacek, J., Zalesak, J., Zhang, Zhiqing, Zhokin, A., Zohrabyan, H., Zomer, F., Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Starita, Sabine, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: High Energy Physics - Experiment (hep-ex), [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Phenomenology, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], FOS: Physical sciences, High Energy Physics::Experiment, High Energy Physics - Experiment
Abstract: The proton structure function F_2(x,Q^2) is measured in inelastic QED Compton scattering using data collected with the H1 detector at HERA. QED Compton events are used to access the kinematic range of very low virtualities of the exchanged photon, Q^2, down to 0.5 GeV^2, and Bjorken x up to \sim 0.06, a region which has not been covered previously by inclusive measurements at HERA. The results are in agreement with the measurements from fixed target lepton-nucleon scattering experiments., Comment: 19 pages, 4 figures and 2 tables
Published: 2004

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

99 results on '"Ozerov, D"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources