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1. xFitter 2.0.0: An Open Source QCD Fit Framework

Author: Voica Radescu, R. Placakyte, Daniel Britzger, Fredrick I. Olness, Francesco Giuli, Stefano Camarda, A. Glazov, A. Luszczak, M.A.J. Botje, W. Slominksi, Amanda Cooper-Sarkar, O. Zenaiev, and V. Bertone
Subjects: Quantum chromodynamics, Particle physics, Large Hadron Collider, Computer science, Tevatron, FOS: Physical sciences, hep-ph, Parton, HERA, Set (abstract data type), High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), Factorization, High Energy Physics::Experiment, Perturbation theory (quantum mechanics), Particle Physics - Phenomenology
Abstract: xFitter is an open-source package that provides a framework for the determination of the parton distribution functions (PDFs) of the proton for many different kinds of analyses in Quantum Chromodynamics (QCD). xFitter version 2.0.0 has recently been released, and offers an expanded set of tools and options. It incorporates experimental data from a wide range of experiments including fixed-target, Tevatron, HERA, and LHC. xFitter can analyze this data up to next-to-next-to-leading-order (NNLO) in perturbation theory with a variety of theoretical calculations including numerous methodological options for carrying out PDF fits and plotting tools which help visualize the results. While primarily based on the collinear factorization foundation, xFitter also provides facilities for fits of dipole models and transverse-momentum dependent (TMD) PDFs. The package can be used to study the impact of new precise measurements from hadron colliders, and also assess the impact of future colliders. This paper provides a brief overview of xFitter with emphasis of the new version 2.0.0 features., 6 pages, 7 figures.Presented at 25th International Workshop on Deep Inelastic Scattering and Related Topics, 3-7 April 2017, Birmingham, UK. PoS(DIS2017)203
Published: 2017

2. HERAFitter, Open Source QCD Fit Project

Author: Amanda Cooper-Sarkar, Gavin P. Salam, Kristin Lohwasser, J. Feltesse, J. Tomaszewska, K. Daum, R. Plačakytė, Alberto Guffanti, P. Starovoitov, H. Kowalski, S. Borroni, Mark Sutton, A. Vargas, K. Nowak, O. Kuprash, Sergey Alekhin, R. McNulty, Hannes Jung, H. Pirumov, V. I. Kolesnikov, A. Luszczak, S. Levonian, Andrii Gizhko, Andreas Werner Jung, M.A.J. Botje, G. Watt, Voica Radescu, B. Lobodzinski, A. Kusina, A. Glazov, Hubert Spiesberger, V. Myronenko, Stefano Camarda, André Schöning, K. Wichmann, Thomas Schörner-Sadenius, Klaus Rabbertz, Bogdan Malaescu, Emmanuelle Perez, Pavel A. Belov, D. Britzger, Fredrick I. Olness, Katerina Lipka, S. Shushkevich, Olaf Behnke, Andrey Sapronov, W. Slominski, M. Guzzi, Sebastian Naumann-Emme, Renat Sadykov, O. Turkot, Cristinel Diaconu, and Francesco Hautmann
Subjects: Particle physics, p p: scattering, dipole [model], Physics and Astronomy (miscellaneous), Hadron, FOS: Physical sciences, parton: distribution function, Parton, model: dipole, transverse momentum dependence, collinear [factorization], Cross section (physics), High Energy Physics - Phenomenology (hep-ph), Factorization, statistical analysis, deep inelastic scattering, quantum chromodynamics, Range (statistics), scattering [p p], anti-p p: scattering, ddc:530, structure, numerical calculations, Nuclear Experiment, Engineering (miscellaneous), anti-p p, Particle Physics - Phenomenology, Physics, Quantum chromodynamics, scattering [anti-p p], factorization: collinear, Deep inelastic scattering, Dipole, DESY HERA Stor, High Energy Physics - Phenomenology, Physics::Accelerator Physics, High Energy Physics::Experiment, hadron, distribution function [parton]
Abstract: The European physical journal / C 75(7), 304 (2015). doi:10.1140/epjc/s10052-015-3480-z, HERAFitter is an open-source package that provides a framework for the determination of the parton distribution functions (PDFs) of the proton and for many different kinds of analyses in Quantum Chromodynamics (QCD). It encodes results from a wide range of experimental measurements in lepton-proton deep inelastic scattering and proton-proton (proton-antiproton) collisions at hadron colliders. These are complemented with a variety of theoretical options for calculating PDF-dependent cross section predictions corresponding to the measurements. The framework covers a large number of the existing methods and schemes used for PDF determination. The data and theoretical predictions are brought together through numerous methodological options for carrying out PDF fits and plotting tools to help visualise the results. While primarily based on the approach of collinear factorisation, HERAFitter also provides facilities for fits of dipole models and transverse-momentum dependent PDFs. The package can be used to study the impact of new precise measurements from hadron colliders. This paper describes the general structure of HERAFitter and its wide choice of options., Published by Springer, Berlin
Published: 2014
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3. A QCD analysis of HERA and fixed target structure function data

Author: M.A.J. Botje and Zeus (IHEF, IoP, FNWI)
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, ZEUS (particle detector), Physics and Astronomy (miscellaneous), Proton, High Energy Physics::Phenomenology, FOS: Physical sciences, Parton, HERA, Atomic and Molecular Physics, and Optics, Standard Model, Nuclear physics, Momentum, High Energy Physics - Phenomenology, High Energy Physics - Phenomenology (hep-ph), High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous), Charged current
Abstract: The parton momentum density distributions in the proton are determined from a next-to-leading order QCD analysis of structure functions measured at HERA and by fixed target experiments. Also included are data on the difference of the up and down anti-quark distributions. The uncertainties in the parton densities, structure functions and related cross sections are estimated from the experimental errors and those on the input parameters of the fit. Several QCD predictions obtained from this analysis are calculated and compared to data. The parton densites including the full error information is made available on a computer readable file., Latex source, 14 pages, 3 tables, 15 figures
Published: 1999
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4. Elastic and proton-dissociative $\rho^0$ photoproduction at HERA

Author: E. A. De Wolf, N. Tuning, Frank Chlebana, C.H. Bokel, J.H. Vossebeld, Wouter Verkerke, Marcel Vreeswijk, A.I. van Sighem, M.A.J. Botje, J. Breitweg, H.G.J.M. Tiecke, Els Koffeman, J.J. Engelen, L.W. Wiggers, P.M. Kooijman, and N.C. Brummer
Subjects: Physics, Particle physics, Rho meson, Physics and Astronomy (miscellaneous), Scattering, High Energy Physics::Phenomenology, HERA, Helicity, Vertex (geometry), Nuclear physics, Pomeron, Pion, High Energy Physics::Experiment, Invariant mass, Nuclear Experiment, Engineering (miscellaneous)
Abstract: Elastic and proton-dissociative $\rho^0$ photoproduction ( $\gamma p \rightarrow \rho^0 p$ , $\gamma p \rightarrow \rho^0 N$ , respectively, with $\rho^0 \rightarrow \pi^+\pi^-$ ) has been studied in $ep$ interactions at HERA for photon-proton centre-of-mass energies in the range $50 < W < 100$ GeV and for $|t| < 0.5$ GeV $^2$ , where $t$ is the square of the four-momentum transfer at the proton vertex; the results on the proton-dissociative reaction are presented for masses of the dissociated proton system in the range $M_N^2 < 0.1 W^2$ . For the elastic process, the $\pi^+\pi^-$ invariant mass spectrum has been investigated as a function of $t$ . As in fixed target experiments, the $\rho^0$ resonance shape is asymmetric; this asymmetry decreases with increasing $|t|$ , as expected in models in which the asymmetry is ascribed to the interference of resonant and non-resonant $\pi^+\pi^-$ production. The cross section has been studied as a function of $W$ ; a fit to the resonant part with the form $W^a$ gives $a=0.16\pm 0.06 \mbox{(stat.)} ^{+0.11}_{-0.15} \mbox{(syst.)}$ . The resonant part of the $\gamma p \rightarrow \pi^+\pi^- p$ cross section is $11.2\pm 0.1 \mbox{(stat.)} ^{+1.1}_{-1.2} \mbox{(syst.)}$ $\mu$ b at $\langle W\rangle=71.7$ GeV. The $t$ dependence of the cross section can be described by a function of the type $A_{\rho} \exp{(-b_{\rho} |t| + c_{\rho} t^2)}$ with $b_{\rho}= 10.9 \pm 0.3$ (stat.) $^{+1.0}_{-0.5}$ (syst.) GeV $^{-2}$ and $c_{\rho}= 2.7 \pm 0.9$ (stat.) $^{+1.9}_{-1.7}$ (syst.) GeV $^{-4}$ . The $t$ dependence has also been studied as a function of $W$ and a value of the slope of the pomeron trajectory $\alpha_{\mathbb{P}}^{\prime}= 0.23 \pm 0.15 \mbox{(stat.)} ^{+0.10}_{-0.07} \mbox{(syst.)}$ GeV $^{-2}$ has been deduced. The $\rho^0$ spin density matrix elements $r^{04}_{00}$ , $r^{04}_{1-1}$ and ${\frak R}{e[r^{04}_{10}]}$ have been measured and found to be consistent with expectations based on $s$ -channel helicity conservation. For proton-dissociative $\pi^+\pi^-$ photoproduction in the $\rho^0$ mass range, the distributions of the two-pion invariant mass, $W$ and the polar and azimuthal angles of the pions in the helicity frame are the same within errors as those for the elastic process. The $t$ distribution has been fitted to an exponential function with a slope parameter $5.8 \pm 0.3 \mbox{(stat.)} \pm 0.5 \mbox{(syst.)}$ GeV $^{-2}$ . The ratio of the elastic to proton-dissociative $\rho^0$ photoproduction cross section is $2.0 \pm 0.2 \mbox{(stat.)} \pm 0.7 \mbox{(syst.)}$ .
Published: 1998
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5. Measurement of the $t$ distribution in diffractive photoproduction at HERA

Author: P.M. Kooijman, W. Verkerke, N.C. Brummer, Marcel Vreeswijk, Frank Chlebana, Els Koffeman, E. A. De Wolf, N. Tuning, J. Breitweg, J.H. Vossebeld, A.I. van Sighem, J.J. Engelen, L.W. Wiggers, M.A.J. Botje, C.H. Bokel, and H.G.J.M. Tiecke
Subjects: Nuclear physics, Physics, Pomeron, Particle physics, Physics and Astronomy (miscellaneous), Meson, Energy interval, High Energy Physics::Experiment, T distribution, HERA, Nuclear Experiment, Engineering (miscellaneous)
Abstract: Photon diffractive dissociation, $\gamma p \rightarrow Xp$, has been studied at HERA with the ZEUS detector using $ep$ interactions where the virtuality $Q^2$ of the exchanged photon is smaller than 0.02 GeV$^2$. The squared four-momentum $t$ exchanged at the proton vertex was determined in the range $0.073< |t| < 0.40$ GeV$^2$ by measuring the scattered proton in the ZEUS Leading Proton Spectrometer. In the photon-proton centre-of-mass energy interval $176 < W < 225$ GeV and for masses of the dissociated photon system $4 < M_X < 32$ GeV, the $t$ distribution has an exponential shape, $dN/d|t| \propto \exp{(-b|t|)}$, with a slope parameter $b=6.8 \pm 0.9$ (stat.)$^{+1.2}_{-1.1}$ (syst.) GeV$^{-2}$.
Published: 1998
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6. Measurement of the proton structure function F2 and σ at low and very low x at HERA

Author: Michele Arneodo, Ada Solano, S. Limentani, G. F. Susinno, M. St-Laurent, L. Suszycki, I. T. Lim, S. Bhadra, A. M. Cooper-Sarkar, S. Dagan, C. A. Heusch, Marco Schioppa, S. Magill, M. Khakzad, N.C. Brummer, Yu. A. Golubkov, E. Paul, P. G. Pelfer, A. Meyer-Larsen, S. Nam, T. Ishii, Costas Foudas, M. Posocco, J. Hartmann, E. Lohrmann, A. Bertolin, R. S. Orr, C. Voci, J. F. de Trocóniz, C. M. Ginsburg, R. Ayad, H.E. Blaikley, Mariusz Przybycien, M. Corradi, Kenneth Long, S. Ritz, L.W. Mo, H. Zhang, J. F. Martin, A. Caldwell, L. Zawiejski, Roberto Cirio, C.H. Bokel, J.A. Parsons, Y. Zamora Garcia, T. Voß, S. Polenz, F. Selonke, M. Zachara, E. Hilger, H.J. Grabosch, W.N. Cottingham, G. Bari, B. Lu, G. Cara Romeo, A. Meyer, J. Repond, H. F.W. Sadrozinski, K. Umemori, D.S. Hanna, Rosario Nania, Sung Keun Park, O. Deppe, R.C.E. Devenish, Q. Zhu, Giovanna Bruni, B. Bednarek, G. Laurenti, K. Coböken, A. Kotański, H.-P. Jakob, R. L. Saunders, U. Wollmer, L.K. Gladilin, A. Quadt, C. Coldewey, L. Lamberti, D. Simmons, L.A.T. Bauerdick, Marcel Vreeswijk, J.R. Okrasiński, Matthias Kasemann, D.G. Roff, F. Zetsche, M. L. Utley, Yuji Yamazaki, F. Pelucchi, A. Stifutkin, B. Mellado, James Crittenden, F. Dal Corso, Giuseppe Levi, R. Brugnera, John Hart, B. Surrow, Jongmin Lee, D. Kçira, L. Iannotti, R. Kerger, K. Jelen, R.L. Talaga, T. Yamashita, W.F. Badgett, W.R. Frisken, V. A. Kuzmin, D. C. Bailey, M. Grothe, L. Heinz, J. P. Fernandez, Ian Brock, H.F. Heath, L. Lindemann, J. Ciborowski, J. Del Peso, Giuseppe Barbagli, H. Salehi, D. Notz, J. A. Zakrzewski, S. Sampson, U. Schneekloth, J. Bulmahn, Katsuo Tokushuku, T. W. Jones, O. Ruske, M. Dardo, I. Butterworth, Y. Iga, M. Brkic, Gm Levman, Umberto Dosselli, M. Roco, O. Yu. Lukina, D. Epperson, A. Prinias, B.Y. Oh, Janusz Chwastowski, P. Nylander, K. K. Joo, S. Yamada, R. Yoshida, A. Polini, Elisabetta Gallo, D. S. Waters, K. Homma, D. Hasell, G. D'Agostini, B.D. Burow, Richard Hall-Wilton, J. Stamm, B. Foster, E. Strickland, M. Nakao, T. Y. Ling, Ta Romanowski, E. A. De Wolf, I. A. Korzhavina, J. R. Tickner, G. L. Bashindzhagyan, W.B. Schmidke, R. J. Teuscher, K. Yamauchi, W. Koch, O. Mańczak, P. Markun, G. F. Hartner, H. Beier, T.P. Shah, Tachishige Hirose, C. Amelung, Robert Klanner, A. Vaiciulis, U. Holm, S. Mattingly, R. Cross, M.E. Hayes, O. Schwarzer, J. Gilmore, Silvia Maselli, L.W. Hung, R. Stanek, J. M. Pawlak, Jonathan Butterworth, Tadeusz Kowalski, G. Poelz, A. Nigro, S. Eisenhardt, N. Tuning, Joanne Cole, S. A. Zotkin, J. Y. Kim, R. Pawlak, A. Garfagnini, W. Schott, Cd Catterall, U. Fricke, Fernando Barreiro, B. Löhr, Lucia Votano, Z. Duliński, C. Nath, J.D. McFall, C. L. Kim, T. Matsushita, I. Suzuki, K. Muchorowski, R. Waugh, G. Cases, Y. Eisenberg, S. Kitamura, A.F. Whitfield, M.C.K. Mattingly, L. S. Durkin, Mark Sutton, S. M. Wang, D. H. Saxon, R. Stroili, D.J. Gilkinson, Guillaume Garcia, R. Walczak, K. Heinloth, Pietro Antonioli, Luisa Cifarelli, Neville Harnew, Roberto Carlin, P. Göttlicher, J.N. Lim, G. Howell, R. Wedemeyer, J.K. Edmonds, D. Horstmann, D. Chapin, A.I. van Sighem, P.F. Ermolov, H. Wieber, J. Roldán, N. H. Brook, R. Hamatsu, V. L. Harris, K. Wick, Mauro Morandin, Z. Jakubowski, J. Puga, G. Sartorelli, M. Przybycien, K. Nagano, C. Youngman, M. Rohde, Luca Stanco, Lev Khein, R. Deffner, A.A. Savin, Krzysztof Piotrzkowski, J.T. Bromley, C. Rembser, M. Adamus, Danuta Kisielewska, G. Marini, T. Massam, E. Rulikowska-Zarȩbska, C. Glasman, Wolfram Dietrich Zeuner, A.K. Wróblewski, A. Bamberger, G. Abbiendi, K. Desler, D. Acosta, Roberto Sacchi, M. Riveline, S. Kananov, J. K. Sedgbeer, D. Piccioni, P. Cloth, Cristiana Peroni, M. Kuze, R. J. Cashmore, J. Labs, M. Derrick, T. Tymieniecka, A. H. Walenta, N. A. McCubbin, U. Kötz, D.D. Reeder, D. Revel, M. Wodarczyk, D. Sideris, N. Gendner, F. Sciulli, J. Breitweg, F. Ricci, D. B. Miller, C.-P. Fagerstroem, Antonino Zichichi, J.J. Engelen, M. Basile, R. J. Nowak, Aharon Levy, A. Pellegrino, T. Haas, F. Anselmo, A. Pesci, A. N. Solomin, U. Mallik, Ben Bylsma, J. Milewski, Kurtis F Johnson, J. M. Hernandez, G.P. Heath, A. Bornheim, H. Park, H. Hartmann, J. Große-Knetter, P. Giusti, W. Liu, Laurel E. Sinclair, R.J. Tapper, Sridhara Dasu, S Campbell-Robson, Halina Abramowicz, F. Palmonari, P. B. Kaziewicz, K. Ohrenberg, H. Uijterwaal, V. Monaco, G. Drews, Giovanni Maccarrone, D. Hochman, W. Hain, S. Schlenstedt, P. J. Bussey, Thomas Trefzger, H.G.J.M. Tiecke, A. Seiden, T. Doeker, J.J. Ryan, W. H. Smith, Andrea Contin, Anselmo Margotti, J.H. Vossebeld, M. Lancaster, M. Raso, A. Eskreys, A. T. Doyle, L. Labarga, Wouter Verkerke, D. C. Williams, Mário Costa, B. A. Dolgoshein, T. Monteiro, L.W. Wiggers, J.T. Wu, A. Ochs, M. Inuzuka, Marcella Capua, F.S. Chlebana, D.S. Bailey, D. Westphal, J.I. Fleck, M. Eckert, N.A. Korotkova, L. Bellagamba, J. Zaja̧c, J.B. Lane, Gy. Wolf, J. T. Rahn, U. Karshon, Luis Hervas, D. Boscherini, A.S. Proskuryakov, A.F. Żarnecki, G. Briskin, G. Castellini, W.N. Murray, Detlef Filges, N. Pavel, M.A.J. Botje, N. Cartiglia, J.S.T. Ng, P.M. Kooijman, J. Shulman, Ricardo Graciani, Juan Terron, M. Kasprzak, P. Borzemski, S. Wölfle, Amedeo Staiano, U. F. Katz, R. Loveless, T. Fusayasu, M. Pfeiffer, A.S. Wilson, C.R. Sampson, Ulf Behrens, Federico Cindolo, H. Kowalski, R. Ullmann, V.A. Noyes, Miriam Lucio Martinez, S. B. Lee, B. Musgrave, D.G. Stairs, S.H. An, M. Y. Pac, M. C. Petrucci, T. Tsurugai, P.B. Straub, L. M. Shcheglova, Giuseppe Iacobucci, I. Bohnet, Tomohiro Abe, Z. Jing, B. H. Y. Hung, J. K. Bienlein, A. Bruni, M. Löwe, Enrico Tassi, J. J. Whitmore, Vladimir Bashkirov, F. Corriveau, G. Grzelak, T. C. Bacon, S. De Pasquale, I. Gialas, Inkyu Park, Leszek Adamczyk, M.I. Ferrero, D. Mikunas, R. G. Feild, and D. Krakauer
Subjects: Physics, Nuclear and High Energy Physics, Range (particle radiation), ZEUS (particle detector), Neutral current, Proton, 010308 nuclear & particles physics, Scattering, Structure function, HERA, 01 natural sciences, Calorimeter, Nuclear physics, 0103 physical sciences, 010306 general physics
Abstract: A small electromagnetic sampling calorimeter, installed in the ZEUS experiment in 1995, significantly enhanced the acceptance for very low x and low Q 2 inelastic neutral current scattering, e+p → e+X, at HERA. A measurement of the proton structure function F2 and the total virtual photon-proton ( γ ∗ p ) cross-section is presented for 0.11 ≤ Q 2 ≤ 0.65 GeV2 and 2 × 10−6 ≤ x ≤ 6 × 10−5, corresponding to a range in the γ ∗ p c.m. energy of 100 ≤ W ≤ 230 GeV. Comparisons with various models are also presented.
Published: 1997
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7. Study of charged—currentep interactions atQ 2>200 GeV2 with the ZEUS detector at HERA

Author: WN Cottingham, D.D. Reeder, M. Wodarczyk, H. Park, P. B. Kaziewicz, H. Uijterwaal, U. Wollmer, Roberto Sacchi, Ulf Behrens, H.G.J.M. Tiecke, B. Surrow, F. Benard, M.A.J. Botje, Fernando Barreiro, S. Mengel, J. Mainusch, J.B. Lane, Gy. Wolf, Yasunori Yamazaki, D. Simmons, Avto Kharchilava, W. Schott, Cd Catterall, Federico Cindolo, R. R. McNeil, W. Bogusz, Cristiana Peroni, Aharon Levy, Thomas Trefzger, K.F. Johnson, J. N. Lim, Mauro Morandin, Z. Jakubowski, Ricardo Graciani, Samuel Silverstein, H.-P. Jakob, John Hart, P. Nylander, K. K. Joo, A. Bruni, L. W. Hung, F. Palmonari, R. Sinkus, O. Mańczak, G. F. Hartner, R. J. Cashmore, Miriam Lucio Martinez, S. B. Lee, Andrea Contin, A. Kruse, S. Wölfle, Laurel E. Sinclair, M. Löwe, Katsuo Tokushuku, L. Hagge, Antonino Zichichi, Aleksander Filip Żarnecki, Silvia Maselli, R. Cross, M. Derrick, T. Tymieniecka, U. Kötz, R. L. Saunders, M. de Kamps, H. J. Kim, Giovanni Maccarrone, D. Hochman, C. Rembser, T. Ishii, F. J. Sciulli, T. Monteiro, S. Polenz, S. Schlenstedt, Amedeo Staiano, U. F. Katz, M. Pfeiffer, D. Filges, R. J. Tapper, D. Revel, Z. Duliński, J. Gilmore, Lucia Votano, Enrico Tassi, J. J. Whitmore, Giancarlo Susinno, Masami Chiba, R. Brugnera, S.H. An, P. J. Bussey, N. A. McCubbin, Marcella Capua, A. Meyer, K. Umemori, Mariusz Przybycien, D. Horstmann, N. H. Brook, V. L. Harris, V. K. Nadendla, M. Corradi, C. Nath, S. Yang, H. Heßling, J. F. Martin, I. Gialas, R. J. Nowak, F. Selonke, E. Hilger, Matthias Kasemann, V. A. Kuzmin, S. Campbell-Robson, H.J. Grabosch, J. P. Fernandez, Umberto Dosselli, Rosario Nania, Sung Keun Park, Cg Matthews, M. Roco, M. Rohde, Danuta Kisielewska, Marcel Vreeswijk, D Piccioni, N. Cartiglia, T. Tsurugai, O. Deppe, W. N. Murray, D. C. Bailey, J. Del Peso, M. De Giorgi, C. Youngman, A. M. Cooper-Sarkar, S. Dagan, D. Notz, G. Cases, A. Nigro, T. Massam, A.S. Proskuryakov, T. Yip, M. Inuzuka, R. van Woudenberg, A. Seiden, R. Stanek, W. Liu, K. Desler, R. J. Seifert, Leszek Adamczyk, I. A. Korzhavina, M. Khakzad, Janusz Chwastowski, M. L. Cardy, K. Homma, James Crittenden, Yu. A. Golubkov, M. Krzyżanowski, J. Ciborowski, M.I. Ferrero, M. St-Laurent, C. Coldewey, D.C. Williams, B. D. Burow, R. Loveless, ME Hayes, Luca Stanco, J.H. Vossebeld, E. Barberis, C.-P. Fagerstroem, A. Eskreys, A. T. Doyle, Y. Zamora Garcia, T. Voß, R. Ullmann, M. Nakao, P. Borzemski, R. G. Feild, M. Geerts, M. Posocco, T. W. Jones, A. N. Solomin, A. H. Walenta, DG Roff, L. Labarga, E. A. De Wolf, J. K. Sedgbeer, M. Eckert, L. Bellagamba, A.S. Wilson, L. Lamberti, Wouter Verkerke, C.R. Sampson, U. Mallik, Greg P Heath, J. R. Okrasinski, Jeffrey T. Rahn, L. M. Shcheglova, M. Grothe, P. Giusti, Gm Levman, B.Y. Oh, G. Zacek, G. L. Bashindzhagyan, A. Pesci, W.B. Schmidke, G. Drews, R. J. Teuscher, P. M. Patel, L. Heinz, J. A. Parsons, P. Joos, J. Stamm, A.F. Whitfield, S. W. Nam, B. A. Dolgoshein, Stefano Maria Mari, A. Quadt, D. S. Bailey, O. Schwarzer, Helen F Heath, J. Große-Knetter, V.A. Noyes, J.J. Engelen, Giuseppe Iacobucci, N. Pavel, J. R. Tickner, B. Foster, D. S. Waters, D. Krakauer, Jens Hartmann, G. Bruni, W. Hain, Z. Jing, M. Dardo, P.M. Kooijman, A. Dannemann, B. Lu, M. Brkic, J. Shulman, S. Ritz, D. S. Hanna, Vladimir Bashkirov, C. Amelung, M. L. Utley, N. Wulff, M. Riveline, M. Lancaster, J.T. Wu, Juan Terron, M. Kasprzak, K. Yamauchi, Y. Iga, J. Zając, H. Kowalski, A. Frey, M. Flasiński, N. Dyce, C. Voci, B. H. Y. Hung, J. K. Bienlein, Anselmo Margotti, L.W. Wiggers, E. Rulikowska-Zarebska, C. Li, P. Antonioli, A.I. van Sighem, K. Wick, G. Abbiendi, J.D. McFall, Marco Schioppa, G. Grzelak, T. C. Bacon, D. Hasell, G. D'Agostini, S. Mattingly, D. Schramm, C. A. Heusch, Luisa Cifarelli, L. K. Gladilin, Neville Harnew, D. Mikunas, G. Howell, J. Bulmahn, J. I. Fleck, D. Lüke, A. Polini, P.F. Ermolov, P. Bruni, P. G. Pelfer, T.P. Shah, Mark Sutton, T. Doeker, G. Briskin, Q. Zhu, S. M. Wang, D. H. Saxon, Costas Foudas, L.W. Mo, J. A. Zakrzewski, D. Westphal, F. Zuin, T. Y. Ling, S. Kartik, L. Lindemann, S. De Pasquale, M.C.K. Mattingly, U. Karshon, L. S. Durkin, E. Lohrmann, D. Zer-Zion, C. Glasman, P. Göttlicher, R. Hamatsu, Luis Hervas, I. Suzuki, S. Mine, D. Boscherini, R. Yoshida, J. Puga, Robert Klanner, A. Vaiciulis, R. S. Orr, A. Caldwell, G. Castellini, William S. Lockman, Michele Arneodo, H. F.W. Sadrozinski, J.S.T. Ng, Y. Eisenberg, D.J. Gilkinson, R. Walczak, J. M. Pawlak, P. B. Straub, Kenneth Long, R. Deffner, M. Adamus, A. Bornheim, K. Heinloth, A. Garfagnini, G. Bari, Giuseppe Barbagli, A. Ladage, J. Roldán, Hao Zhang, S. Magill, W. Schulz, G. Marini, Francois Corriveau, M. Van Hook, A. Kotański, K. Muchorowski, B. Bednarek, Np Zotov, I. H. Park, Wolfram Dietrich Zeuner, A.K. Wróblewski, A. Bamberger, Ben Bylsma, J. Milewski, O. Yu. Lukina, G. Sartorelli, R. Wedemeyer, M. Przybycien, B. J. Ko, H. Hartmann, L.A.T. Bauerdick, Giuseppe Levi, F. Zetsche, A. A. Savin, L. Suszycki, K. Jelen, S. Eisenhardt, Roberto Carlin, W.R. Frisken, Sridhara Dasu, D. Chapin, Halina Abramowicz, A. Bertolin, U. Schneekloth, J. F. de Trocóniz, I. Butterworth, F. Dal Corso, L. Zawiejski, Roberto Cirio, A. Cassidy, W.F. Badgett, Ta Romanowski, B. Musgrave, E. Paul, A. Stifutkin, F. F. Wilson, Jonathan Butterworth, B. Löhr, R. L. Talaga, S. Kitamura, Ada Solano, S. Limentani, M. Z. Wang, S. Bhadra, M. Zachara, Shoichi Yamada, R.C.E. Devenish, G. Laurenti, L. Iannotti, A. Prinias, Elisabetta Gallo, W. Koch, H. Beier, Tadeusz Kowalski, G. Poelz, Lutz Feld, J.T. Bromley, W. Metcalf, U. Holm, D. Acosta, Dg Stairs, Krzysztof Piotrzkowski, D. Sideris, D. B. Miller, Jose Repond, K. Ohrenberg, J. Gajewski, W. H. Smith, Mário Costa, G. H. Cho, J. Labs, F.S. Chlebana, M. Basile, T. Haas, V. D. Kobrin, T. Dubbs, J. Biltzinger, P. Cloth, R. Ayad, J. Breitweg, J. M. Hernandez, G. Cara Romeo, N. Brümmer, Simon George, Tachishige Hirose, M. Kuze, T. Matsushita, L. Wai, and R. Stroili
Subjects: Nuclear physics, Physics, Particle physics, Physics and Astronomy (miscellaneous), Rapidity, Center of mass, HERA, Zeus (malware), Energy (signal processing), Boson, Bar (unit)
Abstract: Deep inelastic charged-current reactions have been studied ine+p ande−p collisions at a center of mass energy of about 300GeV in the kinematic regionQ2>200GeV2 andx>0.006 using the ZEUS detector at HERA. The integrated cross sections forQ2>200GeV2 are found to be $\sigma _{e^ + p \to \bar \nu X} = 30.3_{ - 4.2 - 2.6}^{ + 5.5 + 1.6} pb$ and $\sigma _{e^ - p \to \nu X} = 54.7_{ - 9.8 - 3.4}^{ + 15.9 + 2.8} pb$. Differential cross sections have been measured as functions of the variablesx, y andQ2. From the measured differential cross sectionsdσ/dQ2, theW boson mass is determined to be $M_W = 79_{ - 7 - 4}^{ + 8 + 4} GeV$. Measured jet rates and transverse energy profiles agree with model predictions. A search for charged-current interactions with a large rapidity gap yielded one candidate event, corresponding to a cross section of $\sigma _{e^ + p \to \bar \nu X} (Q^2 > 200 GeV^2 ; \eta _{\max }< 2.5) = 0.8_{ - 0.7}^{ + 1.8} \pm 0.1 pb$
Published: 1996
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8. Measurement of elasticρ 0 photoproduction at HERA

Author: D.D. Reeder, A. Bertolin, B. Diekmann, M. Wodarczyk, M. Lancaster, J.T. Wu, J. Zając, J. F. de Trocóniz, L. Zawiejski, Roberto Cirio, S.H. An, D. Mikunas, H.-P. Jakob, P. Morawitz, Rosario Nania, Sung Keun Park, R. L. Saunders, B. Musgrave, M. St.Laurent, G. Briskin, P. B. Kaziewicz, D. Krakauer, L. Lamberti, Simon George, Detlef Filges, Q. Zhu, R. Brugnera, P.M. Kooijman, Miguel Molina Martínez, H. Uijterwaal, E. Gallo, M. Roco, E. McCliment, V. A. Kuzmin, D. C. Bailey, Tachishige Hirose, M.C.K. Mattingly, L. S. Durkin, A. Dannemann, A. Stifutkin, M. De Giorgi, M. L. Utley, J. Shulman, T. Tsurugai, Aleksander Filip Żarnecki, Silvia Maselli, R. Hamatsu, A. Seiden, J. Puga, B. Surrow, Gm Levman, Giuseppe Barbagli, J. Bulmahn, D. S. Waters, Juan Terron, M. Kasprzak, M. Kuze, E. Rulikowska-Zarebska, J. I. Fleck, Y. Nagasawa, R. S. Orr, G. Zech, M. Flasiński, Vladimir Bashkirov, S.S. Wilson, A. Nigro, P. B. Straub, Kenneth Long, K. Yamauchi, S. Mengel, J. Mainusch, A. Eskreys, A. T. Doyle, A. Byrne, J. A. Zakrzewski, B. Bargende, L. Wai, B. Behrens, D. Horstmann, A. Dake, N. H. Brook, K. Wick, A. Prinias, L. Labarga, Wouter Verkerke, G. Bari, C.J.S. Morgado, M. Adamus, G. Marini, V. L. Harris, Michele Arneodo, D. C. Williams, R. Stroili, L. M. Shcheglova, T.L. Short, B. A. Dolgoshein, N. Bruemmer, Cg Matthews, M. de Kamps, H. J. Kim, Giovanni Maccarrone, S. Schlenstedt, P. J. Bussey, Giovanna Bruni, M. Van Hook, B. Bednarek, R. Yoshida, Np Zotov, Wolfram Dietrich Zeuner, A.K. Wróblewski, A. Bamberger, Avto Kharchilava, W. Schott, Cd Catterall, W. Koch, M. Eckert, L. Bellagamba, A.F. Whitfield, S. W. Nam, L. Köpke, C. Fordham, R. Loveless, Giuseppe Iacobucci, M. Rohde, A. M. Cooper-Sarkar, S. Dagan, M. Khakzad, M. L. Cardy, Roberto Sacchi, J.J. Engelen, J. M. Pawlak, A. Garfagnini, N. Pavel, I. Suzuki, William S. Lockman, J. F. Martin, Jose Repond, K. Ohrenberg, F. Zetsche, H. Beier, D. J. P. Norman, K. Honscheid, Aharon Levy, Y. Nakamitsu, Katsuo Tokushuku, T. Yip, F. J. Sciulli, I. H. Park, G. Grzelak, H.G.J.M. Tiecke, F. Benard, Roberto Carlin, Yu. A. Golubkov, E. Paul, M. Geerts, K. Blankenship, C.R. Sampson, P. Giusti, G. Zacek, G. Drews, J. A. Parsons, J. N. Lim, Cristiana Peroni, R. Sinkus, A. Freidhof, R. J. Tapper, G. F. Susinno, R. J. Cashmore, A. A. Savin, M. Derrick, M. Posocco, Geoffrey Smith, S. Ritz, D. S. Hanna, Anselmo Margotti, L.W. Wiggers, T. Tymieniecka, L. Suszycki, Jeffrey T. Rahn, Umberto Dosselli, P. M. Patel, Janusz Chwastowski, J. A. O'Mara, A. Bernstein, Y. Zamora Garcia, T. Voß, C. Youngman, V.A. Noyes, Tadeusz Kowalski, D. Acosta, S. Nickel, D. B. Miller, B. D. Burow, Ben Bylsma, J. Milewski, W.N. Murray, G. Anzivino, W. H. Smith, Mário Costa, H. Hartmann, Dg Stairs, U. Kötz, T. C. Bacon, J.B. Lane, J. Mollen, G. Poelz, Masashi Hazumi, E. A. De Wolf, J. Gajewski, A. Frey, M. Nakao, P. Borzemski, Giuseppe Levi, Gy. Wolf, Rr Rau, K. Jelen, J. R. Tickner, J. Ciborowski, S. Polenz, C. Rembser, Marcel Vreeswijk, R. Ullmann, P. Nylander, F.S. Chlebana, N. A. McCubbin, K. K. Joo, V. K. Nadendla, Masami Chiba, Klaus Kurt Desch, James Crittenden, O. Mańczak, T.P. Shah, S. M. Wang, D. H. Saxon, R. J. Nowak, M. Grothe, F. Selonke, E. Hilger, W.R. Frisken, J. Labs, G. F. Hartner, Ulf Behrens, Federico Cindolo, W. Bogusz, H. Kowalski, J. P. Fernandez, M. Dardo, C. Coldewey, Lutz Feld, M. Basile, A. B. Meyer, T. Haas, V. D. Kobrin, T. Dubbs, Samuel Silverstein, A.S. Wilson, Antonino Zichichi, P. Göttlicher, E. Stiliaris, D. Lüke, J. Del Peso, J. Biltzinger, A. Polini, K. Prytz, U. Schneekloth, W. Metcalf, M. Krzyżanowski, I. A. Korzhavina, S. De Pasquale, R. Ayad, I. Butterworth, M. H. Suh, U. Holm, B. Lu, L.E. Sinclair, D. Westphal, L. Hagge, Marco Schioppa, R. J. Seifert, P. G. Pelfer, Sridhara Dasu, B.Y. Oh, U. Karshon, A.S. Proskuryakov, R. Seidlein, Stefano Maria Mari, G. Cara Romeo, T. Ishii, K. Homma, Luis Hervas, D. Boscherini, R. van Woudenberg, A. Quadt, J. M. Hernandez, M. Zachara, Krzysztof Piotrzkowski, Ta Romanowski, G. Castellini, Shoichi Yamada, Fernando Barreiro, C. Li, J.S.T. Ng, R.C.E. Devenish, B. Y. H. Hung, F. Dal Corso, Halina Abramowicz, T. Hasegawa, H. F.W. Sadrozinski, A. Leich, W.F. Badgett, F. F. Wilson, M. Chiarini, G. Cases, Mauro Morandin, Danuta Kisielewska, G. Laurenti, Debades Bandyopadhyay, T. Massam, L. W. Hung, Jonathan Butterworth, T. J. Llewellyn, I. Ali, D. S. Bailey, D. Schramm, O. Schwarzer, S. M. Hong, Helen F Heath, R. L. Talaga, E. Tassi, Matthias Kasemann, I. Gialas, Jens Hartmann, L. Iannotti, K. M. Furutani, E. Lohrmann, D. Revel, Mariusz Przybycien, D. Notz, M. Corradi, S. Yang, J. Schroeder, A. H. Walenta, S. Campbell-Robson, R.S. Gilmore, W. Schulz, H.J. Grabosch, E. Barberis, J. K. Bienlein, O. Deppe, A. N. Solomin, S. H. Yon, U. Mallik, T. W. Jones, Anna Goussiou, Leszek Adamczyk, Yasunori Yamazaki, G. L. Bashindzhagyan, B. Gutjahr, Greg P Heath, John Hart, W.B. Schmidke, R. J. Teuscher, M.I. Ferrero, J. Große-Knetter, Douglas Gingrich, R. G. Feild, R. R. McNeil, K. Charchuła, A. Bruni, M. Löwe, S. Kartik, J.D. McFall, K. Muchorowski, R. Wedemeyer, J. J. Whitmore, Francois Corriveau, C. A. Heusch, J.F. Zhou, P.F. Ermolov, W. Hain, A. Kotański, P. Bruni, Costas Foudas, L.W. Mo, A. Caldwell, Christian Nemoz, L.A.T. Bauerdick, M.A.J. Botje, D. Zer-Zion, K.W. McLean, Ricardo Graciani, Y. Iga, A. Ladage, S. Söldner-Rembold, C. P. Fagerstroem, N. Dyce, Amedeo Staiano, O. Yu. Lukina, U. F. Katz, M. Pfeiffer, P. Cloth, R. Imlay, Ada Solano, C. Voci, S. Limentani, S. Magill, T. Doeker, M. Z. Wang, S. Bhadra, J. Gilmore, T. Timellini, A. Cassidy, R. Stanek, E. Badura, M. Nakahata, Luca Stanco, J. K. Sedgbeer, T. Neumann, B. Löhr, K. Desler, S. Kitamura, Thomas Trefzger, K.F. Johnson, Hao Zhang, Andrea Contin, A. Kruse, T. Monteiro, S. Eisenhardt, Marcella Capua, N. Cartiglia, C. Glasman, S. Mine, A. Bornheim, F. Palmonari, P. Joos, J. Stamm, B. Foster, Luisa Cifarelli, L. K. Gladilin, Neville Harnew, Y. Eisenberg, D.J. Gilkinson, R. Walczak, K. Heinloth, J. Roldán, G. Sartorelli, M. Brkic, N. Wulff, D. Hasell, G. D'Agostini, T. Y. Ling, L. Lindemann, Giovanni Abbiendi, Robert Klanner, A. Vaiciulis, Lucia Votano, C. Nath, and H. Heßling
Subjects: Nuclear physics, Physics, Cross section (physics), ZEUS (particle detector), Pion, Physics and Astronomy (miscellaneous), Proton, Vertex (curve), High Energy Physics::Experiment, Invariant mass, HERA, Nuclear Experiment, Helicity
Abstract: Elasticρ0 photoproduction has been measured using the ZEUS detector at HERA. Untagged photoproduction events fromep interactions were used to measure the reactionγp→ρ0p(ρ0)→π+π−) at photon-proton centre-of-mass energies between 60 and 80 GeV and |t
Published: 1995
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9. Measurement of the proton structure functionF 2 at lowx and lowQ 2 at HERA

Author: D. Krakauer, M. L. Utley, J. Mollen, J. I. Fleck, Y. Nagasawa, P. Nylander, K. K. Joo, O. Mańczak, G. F. Hartner, R. Yoshida, J. A. Zakrzewski, Thomas Trefzger, F. J. Sciulli, K.F. Johnson, P. Bruni, Costas Foudas, A. M. Cooper-Sarkar, S. Dagan, M. Khakzad, M. L. Cardy, K. Honscheid, Yu. A. Golubkov, Vladimir Bashkirov, H. Tiecke, M. Posocco, Geoffrey Smith, L.W. Mo, Andrea Contin, C. Händel-Pikielny, J. F. Martin, N. Bruemmer, Christian Nemoz, A. Caldwell, A. Frey, F. Selonke, L. Köpke, Ulf Behrens, Federico Cindolo, W. Bogusz, A. Cassidy, Y. Iga, N. Dyce, J. Ciborowski, A. Kruse, D. Schramm, C. A. Heusch, E. Hilger, G. Grzelak, R. Ullmann, C. Voci, T. Monteiro, J. M. Pawlak, T. C. Bacon, T. Yip, Mariusz Przybycien, M. Corradi, A. Bernstein, Y. Zamora Garcia, T. Voß, M. Nakahata, Cg Matthews, M.A.J. Botje, Marcella Capua, W. Metcalf, U. Holm, A. Garfagnini, Fernando Barreiro, Mauro Morandin, Hao Zhang, M. Dardo, C. Coldewey, S. Yang, Jens Hartmann, P. Cloth, N. Pavel, I. Suzuki, William S. Lockman, K.W. McLean, S. Nickel, D. B. Miller, J. Gajewski, A. Ladage, Ricardo Graciani, S. Söldner-Rembold, K. Prytz, N. Cartiglia, K. Muchorowski, P. Kooijman, L. W. Hung, T. Neumann, Lucia Votano, T.P. Shah, E. Lohrmann, B. Löhr, C. Nath, C. P. Fagerstroem, H. Heßling, F. Palmonari, M. Krzyżanowski, W. N. Murray, S. M. Wang, S. De Pasquale, D. H. Saxon, I. H. Park, O. Yu. Lukina, Ben Bylsma, D. Lüke, A. Polini, S. Campbell-Robson, S. Kitamura, Amedeo Staiano, U. F. Katz, R. Wedemeyer, M. Basile, Rosario Nania, Sung Keun Park, J. K. Bienlein, T. Doeker, J. Milewski, S. Eisenhardt, Y. Eisenberg, H.J. Grabosch, S. Kartik, P. Göttlicher, J. Gilmore, M. Pfeiffer, T. Haas, V. D. Kobrin, T. Dubbs, Antonino Zichichi, ME Hayes, E. Tassi, A. Nigro, D.J. Gilkinson, B. Lu, S. W. Nam, R. Ayad, R. Walczak, J. Biltzinger, B.Y. Oh, M. H. Suh, M. Zachara, Krzysztof Piotrzkowski, K. Heinloth, Giuseppe Barbagli, D. Filges, J. Roldán, M. Eckert, L. Bellagamba, Shoichi Yamada, R.C.E. Devenish, Francois Corriveau, H. Hartmann, E. McCliment, D. Revel, G. Cara Romeo, A. Dannemann, H.-P. Jakob, P. Joos, R. L. Saunders, O. Deppe, J. Stamm, A.F. Whitfield, A. Kotański, A. Meyer, A. Seiden, G. Laurenti, L.A.T. Bauerdick, B. Foster, M. Lancaster, J. M. Hernandez, R. Brugnera, C. Li, G. Sartorelli, J.T. Wu, J.R. Okrasiński, J. Bulmahn, J. Zając, Yasunori Yamazaki, G. Cases, D. C. Bailey, B. Gutjahr, V. A. Kuzmin, R. Stanek, M. De Giorgi, C. Youngman, A. Eskreys, A. T. Doyle, L. Labarga, Wouter Verkerke, R. R. McNeil, E. Badura, D. Mikunas, W. N. Cottingham, C. Fordham, Luisa Cifarelli, L. K. Gladilin, Neville Harnew, P. Morawitz, B. Y. H. Hung, Sridhara Dasu, Marcel Vreeswijk, T.L. Short, D Piccioni, B. A. Dolgoshein, John Hart, W. Schulz, Luca Stanco, K. Desler, L. Iannotti, Ada Solano, Gm Levman, S. Ritz, D. S. Hanna, Halina Abramowicz, D. C. Williams, D. S. Waters, S. Limentani, J. Del Peso, Aleksander Filip Żarnecki, Silvia Maselli, G. Briskin, E. Rulikowska-Zarcebska, Roberto Carlin, M. de Kamps, K. Charchuła, K. Yamauchi, Q. Zhu, M. Brkic, L.E. Sinclair, K. Homma, H. J. Kim, C. Glasman, N. Wulff, Cristiana Peroni, R. J. Cashmore, Roberto Sacchi, H. Kowalski, M. Z. Wang, D. Hasell, G. D'Agostini, Giovanni Maccarrone, J. K. Sedgbeer, Anselmo Margotti, Simon George, S. Mine, S. Schlenstedt, S. Bhadra, A. Bruni, T. Y. Ling, L. Lindemann, L.W. Wiggers, P. J. Bussey, M. Löwe, Tachishige Hirose, J.D. McFall, D. Horstmann, R. Timellini, A. Dake, N. H. Brook, V. L. Harris, B. D. Burow, Giovanni Abbiendi, Robert Klanner, A. Vaiciulis, G. Bruni, M. Derrick, A. Prinias, Elisabetta Gallo, T. Tymieniecka, A. Bornheim, E. Barberis, J. A. O'Mara, P.F. Ermolov, Jose Repond, G. Anzivino, K. Ohrenberg, Giuseppe Levi, W. Koch, M. Rohde, Danuta Kisielewska, A. N. Solomin, U. Kötz, U. Mallik, Aharon Levy, D. Westphal, P. Giusti, J. T. Rahn, M. Nakao, P. Borzemski, M. Kuze, T. Massam, J. N. Lim, A. Bertolin, Greg P Heath, K. Jelen, J. Engelen, G. Zacek, G. Drews, J. A. Parsons, U. Karshon, H. Beier, A.S. Wilson, J. J. Whitmore, W. Hain, R. Sinkus, Luis Hervas, D. Zer-Zion, J. F. de Trocóniz, L. Zawiejski, W.R. Frisken, I. Ali, D. Boscherini, Tadeusz Kowalski, V. K. Nadendla, R. J. Nowak, W. H. Smith, J. Große-Knetter, Roberto Cirio, D. S. Bailey, O. Schwarzer, Helen F Heath, G. Poelz, J.F. Zhou, G. Castellini, L. Wai, Mário Costa, A. H. Walenta, DG Roff, Lutz Feld, M.C.K. Mattingly, L. S. Durkin, Douglas Gingrich, Giancarlo Susinno, B. Musgrave, M. St.Laurent, J.S.T. Ng, R. Stroili, R. Hamatsu, R. Imlay, K. Wick, E. Paul, J. Puga, F.S. Chlebana, U. Schneekloth, A. Stifutkin, I. Gialas, I. Butterworth, S. Magill, M. Adamus, J. Schroeder, S. Polenz, Ta Romanowski, G. Marini, Np Zotov, Wolfram Dietrich Zeuner, A.K. Wróblewski, A. Bamberger, Masami Chiba, Klaus Kurt Desch, Matthias Kasemann, K. M. Furutani, F. F. Wilson, M. Chiarini, Leszek Adamczyk, Jonathan Butterworth, J. P. Fernandez, D. Notz, I. A. Korzhavina, M.I. Ferrero, S. H. Yon, D. Acosta, T. W. Jones, Anna Goussiou, Dg Stairs, G. L. Bashindzhagyan, W.B. Schmidke, R. J. Teuscher, R. G. Feild, J. Labs, A. Freidhof, James Crittenden, M. Grothe, L. Heinz, R. S. Orr, P. B. Straub, Kenneth Long, F. Dal Corso, Marco Schioppa, P. G. Pelfer, B. Behrens, G. Bari, R. Seidlein, T. Hasegawa, M. Van Hook, B. Bednarek, A. Leich, W.F. Badgett, H. F.W. Sadrozinski, F. Zetsche, Y. Nakamitsu, Katsuo Tokushuku, R. J. Tapper, J. Shulman, Umberto Dosselli, Debades Bandyopadhyay, Janusz Chwastowski, E. A. De Wolf, J. R. Tickner, D.D. Reeder, Juan Terron, M. Kasprzak, B. Diekmann, G. Zech, M. Flasiński, M. Wodarczyk, S. M. Hong, Masashi Hazumi, R. L. Talaga, C. Rembser, N. A. McCubbin, Samuel Silverstein, E. Stiliaris, L. Hagge, P. B. Kaziewicz, T. Ishii, R. J. Seifert, L. Lamberti, Stefano Maria Mari, A. Quadt, H. Uijterwaal, L. M. Shcheglova, A.S. Proskuryakov, C.J.S. Morgado, Michele Arneodo, R. van Woudenberg, F. Benard, M. Martinez, A. A. Savin, L. Suszycki, Giuseppe Iacobucci, R. Loveless, M. Geerts, K. Blankenship, C.R. Sampson, J.B. Lane, P. M. Patel, Gy. Wolf, Rr Rau, B. Surrow, S.H. An, V.A. Noyes, M. Roco, T. Tsurugai, S. Mengel, J. Mainusch, A. Byrne, Avto Kharchilava, W. Schott, and Cd Catterall
Subjects: Nuclear physics, Physics, Range (particle radiation), Physics and Astronomy (miscellaneous), Proton, law, Structure (category theory), Perturbative QCD, HERA, Collider, Deep inelastic scattering, law.invention, Positron energy
Abstract: We report on a measurement of the proton structure function F 2 in the range 3.5×10-5≤x≤4×10-3 and 1.5 GeV2≤Q 2≤15GeV2 at the ep collider HERA operating at a centre-of-mass energy of √s=300GeV. The rise of F 2 with decreasing x observed in the previous HERA measurements persists in this lower x and Q 2 range. The Q 2 evolution of F 2, even at the lowest Q 2 and x measured, is consistent with perturbative QCD. © 1996 Springer-Verlag.
Published: 1995
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10. QCDNUM: fast QCD evolution and convolution

Author: M.A.J. Botje, Subatomic Physics, and Dep Natuurkunde
Subjects: Physics, Quantum chromodynamics, Particle physics, Computation, High Energy Physics::Phenomenology, FOS: Physical sciences, General Physics and Astronomy, Perturbative QCD, Observable, Parton, Deep inelastic scattering, High Energy Physics - Phenomenology, Spline (mathematics), High Energy Physics - Phenomenology (hep-ph), Hardware and Architecture, High Energy Physics::Experiment, Statistical physics, Nuclear Experiment, Test data
Abstract: The QCDNUM program numerically solves the evolution equations for parton densities and fragmentation functions in perturbative QCD. Un-polarised parton densities can be evolved up to next-to-next-to-leading order in powers of the strong coupling constant, while polarised densities or fragmentation functions can be evolved up to next-to-leading order. Other types of evolution can be accessed by feeding alternative sets of evolution kernels into the program. A versatile convolution engine provides tools to compute parton luminosities, cross-sections in hadron-hadron scattering, and deep inelastic structure functions in the zero-mass scheme or in generalised mass schemes. Input to these calculations are either the QCDNUM evolved densities, or those read in from an external parton density repository. Included in the software distribution are packages to calculate zero-mass structure functions in un-polarised deep inelastic scattering, and heavy flavour contributions to these structure functions in the fixed flavour number scheme., 74 pages, 6 figures. Minor modifications in the text and updated list of references
Published: 2011

11. ZEUS results on the measurement and phenomenology of F-2 at low x and low Q(2)

Author: T. Massam, C. Youngman, P. Göttlicher, B. Löhr, H. Schnurbusch, J. F. Martin, Y. Eisenberg, R. Walczak, K. Heinloth, A. Eskreys, D. Kçira, K. Desler, M. Milite, B. Foster, J. Y. Kim, Pietro Antonioli, Neville Harnew, Giuseppe Barbagli, H. Wieber, Ian Brock, D.C. Williams, DG Roff, Guenter Wolf, Y. Zamora Garcia, M.A.J. Botje, R. Wichmann, E. Strickland, A. Prinias, Andrea Contin, Elisabetta Gallo, W. Koch, Marcella Capua, G. Sartorelli, C. A. Heusch, N. Cartiglia, T.P. Shah, Mark Sutton, S. M. Wang, D. H. Saxon, A. Nigro, Ricardo Graciani, H.-P. Jakob, R. L. Saunders, T. Fusayasu, K. Homma, Ada Solano, S. K. Park, J. Roldán, D. Sideris, M. Kuze, E. Lohrmann, F. Palmonari, L.K. Gladilin, G. Howell, C. L. Kim, H. Beier, Tadeusz Kowalski, G. Poelz, R. Brugnera, V. A. Kuzmin, D. C. Bailey, D. B. Miller, R. Yoshida, A. Bornheim, M. Inuzuka, Ulf Behrens, Federico Cindolo, S. Limentani, A. M. Czermak, Lothar At Bauerdick, Jens Hartmann, S. Wölfle, Amedeo Staiano, U. F. Katz, T. Yamashita, H. Kowalski, O. Ruske, M. Basile, F. Anselmo, H.E. Blaikley, J. T. Rahn, M. Pfeiffer, Dong-Chul Son, T. Wildschek, Gm Levman, P.F. Ermolov, Sergei Chekanov, Jan Figiel, S. Sampson, V. W. Hughes, T. Nishimura, U. Karshon, G. D'Agostini, WN Cottingham, V.A. Noyes, S. J. Hong, D. S. Waters, E. A. Heaphy, J. M. Pawlak, Marco Schioppa, N.C. Brummer, P. G. Pelfer, T. Ishii, I. T. Lim, A. D. Burow, J.T. Wu, D.D. Reeder, Detlef Filges, N. Pavel, Tobias M. Haas, Miriam Lucio Martinez, S. B. Lee, A. Seiden, M. Eckert, N.A. Korotkova, L. Bellagamba, M. Khakzad, J. K. Bienlein, Luis Hervas, D. Boscherini, Shoichi Yamada, R.C.E. Devenish, G. Susinno, J. M. Hernandez, G. Castellini, A. M. Cooper-Sarkar, S. Dagan, T. Y. Ling, L. Lindemann, Giovanni Abbiendi, Robert Klanner, A. Vaiciulis, Andreas Weber, M. B. Przybycień, P.M. Kooijman, Katsuya Yamauchi, Yu. A. Golubkov, S. Mattingly, S. A. Zotkin, A. Garfagnini, D. Westphal, Inkyu Park, Leszek Adamczyk, J.H. Vossebeld, Costas Foudas, M. Raso, G. Laurenti, A. T. Doyle, Wouter Verkerke, D. Mikunas, Stefan Stonjek, R. S. Orr, Richard Hall-Wilton, P. B. Straub, I. Suzuki, Kenneth Long, P. Cloth, Ta Romanowski, M. Wodarczyk, Francois Corriveau, Alexander Kappes, S. W. Lee, Florian Goebel, Joanne Cole, Juan Terron, B. A. Dolgoshein, A. Caldwell, E. Rulikowska-Zarȩbska, Silvia Maselli, R. Pawlak, Hao Zhang, Marta Ruspa, Mariusz Przybycien, M. Corradi, B. Smalska, S. Magill, S. Nam, A. Kotański, M.I. Ferrero, M. St-Laurent, G. Bari, H. F.W. Sadrozinski, F. J. Sciulli, Olga Lukina, Q. Zhu, D. Epperson, M. Posocco, L. Iannotti, Roberto Sacchi, L. M. Shcheglova, Jose Repond, C.H. Bokel, A. Pesci, J. D. McFall, T. Trefzger, J.R. Okrasiński, H.J. Grabosch, I. Gialas, K. Coböken, M. E. Hayes, R. Waugh, N. H. Brook, J. Scott, Rosario Nania, M. Grothe, Aharon Levy, C. Voci, Jonathan Butterworth, Matthias Kasemann, S. Bhadra, J.K. Edmonds, A.I. van Sighem, B. Surrow, G. Briskin, S. Polenz, James Crittenden, N. A. McCubbin, F. Zetsche, W. B. Schmidke, B. Mellado, D. Krakauer, W. H. Smith, L. Lamberti, L. Cifarelli, Giuseppe Iacobucci, Laurel E. Sinclair, G.J. McCance, H. Salehi, D. Notz, C. M. Ginsburg, U. Fricke, K. Klimek, Matthew Wing, K. Wick, L. Heinz, H.G.J.M. Tiecke, P. Giusti, Katsuo Tokushuku, S. Eisenhardt, Lucia Votano, C. Nath, P. Borzemski, T. W. Jones, G. L. Bashindzhagyan, R. Cross, J. Gilmore, Giuseppe Levi, G. Drews, W. N. Murray, J. Große-Knetter, J. A. Parsons, Mário Costa, W. Hain, R. J. Tapper, Umberto Dosselli, A.S. Proskuryakov, Janusz Chwastowski, A. Sabetfakhri, R. Kerger, K. Jelen, Claudia Glasman, J. P. Fernandez, Antonino Zichichi, S. K. Dhawan, E. A. De Wolf, J. R. Tickner, A. Ochs, I. Bohnet, R. Stanek, O. Schwarzer, Helen F Heath, Wr Frisken, I. A. Korzhavina, Roberto Carlin, M. Riveline, J.B. Lane, J. A. Zakrzewski, Tomohiro Abe, Luca Stanco, Lev Khein, Ben Bylsma, A. Bruni, J. Milewski, M. Bukowy, U. Wollmer, Yasunori Yamazaki, D. Simmons, N. Tuning, Jongmin Lee, J.J. Ryan, U. Schneekloth, I. O. Skillicorn, S. Kananov, J. K. Sedgbeer, H. Hartmann, John Hart, D. Chapin, D. Hasell, I. Butterworth, U. Holm, Ignacio Redondo, N. Macdonald, P. Nylander, Y. Iga, M. Y. Pac, G. Bruni, K. Hebbel, J.J. Engelen, P. Markun, Z. Jing, B. Bednarek, T. Koop, Enrico Tassi, J. J. Whitmore, A. Meyer-Larsen, G. F. Hartner, Cd Catterall, S. Ritz, D. S. Bailey, Halina Abramowicz, M. C. Petrucci, S. Kitamura, Abhay Deshpande, D. S. Hanna, L. Suszycki, Giovanni Maccarrone, D. Hochman, Anselmo Margotti, T. Tsurugai, T. Monteiro, S. Schlenstedt, P. J. Bussey, Vladimir Bashkirov, A. Bertolin, Rodney Walker, L.W. Wiggers, Z. Duliński, Krzysztof Piotrzkowski, G. Grzelak, W. Liu, T. C. Bacon, F. Selonke, S. De Pasquale, E. Hilger, R. Galea, J. F. de Trocóniz, F. Pelucchi, L. Zawiejski, B.Y. Oh, Roberto Cirio, C. Amelung, Cristiana Peroni, R. J. Cashmore, Luis Labarga, M. Rohde, M. Derrick, G. García, T. Tymieniecka, U. Kötz, P.R.B. Saull, B. Musgrave, N. Gendner, O. Deppe, J. Breitweg, E. Paul, R. J. Nowak, A. Stifutkin, A. F. Barnecki, M.C.K. Mattingly, L. S. Durkin, J. Ciborowski, R. Hamatsu, J. Puga, Els Koffeman, M. Dardo, K. Nagano, F. Dal Corso, R. Deffner, C. Coldewey, H. Raach, M. Adamus, G. Marini, Wolfram Dietrich Zeuner, A.K. Wróblewski, A. Bamberger, W.F. Badgett, A. Polini, R. L. Talaga, Anna Mastroberardino, A. Quadt, Michele Arneodo, A. A. Savin, O. Barret, C.-P. Fagerstroem, A. N. Solomin, U. Mallik, Kurtis F Johnson, Greg P Heath, N. Coppola, M. Sievers, A. Meyer, K. Umemori, W. S. Toothacker, D Piccioni, J. Del Peso, Tachishige Hirose, Fernando Barreiro, Mauro Morandin, T. Matsushita, H. Lim, R. Stroili, G. Cara Romeo, J.T. Bromley, Antonio Pellegrino, D. Acosta, Dg Stairs, Vincenzo Monaco, J. Zajac, and Danuta Kisielewska
Subjects: Physics, Particle physics, QUANTUM CHROMODYNAMICS, Physics and Astronomy (miscellaneous), STRUCTURE-FUNCTION F-2(X, 010308 nuclear & particles physics, Q(2)), PROTON STRUCTURE FUNCTIONS, MUON SCATTERING, FOS: Physical sciences, ZEUS, 01 natural sciences, High Energy Physics - Experiment, CROSS-SECTIONS, Phenomenology (philosophy), High Energy Physics - Experiment (hep-ex), DEUTERON STRUCTURE FUNCTIONS, PARTON DISTRIBUTIONS, 0103 physical sciences, HIGH-ENERGY COLLISIONS, PERTURBATION-THEORY, 010306 general physics, Engineering (miscellaneous), Cursive
Abstract: Measurements of the proton structure function $F_2$ for $0.6 < Q^2 < 17 {GeV}^2$ and $1.2 \times 10^{-5} < x, 36 pages including 12 figures
Published: 1999

12. Observation of isolated high-E-T photons in photoproduction at HERA

Author: M. Zachara, R.C.E. Devenish, Q. Zhu, H.-P. Jakob, R. L. Saunders, Danuta Kisielewska, T. Massam, G. Laurenti, B. Mellado, K. Umemori, R. Brugnera, V. A. Kuzmin, D. C. Bailey, M. Kuze, N. Pavel, P.M. Kooijman, M. St-Laurent, D.C. Williams, C. Youngman, A. H. Walenta, Ta Romanowski, F. Dal Corso, M.E. Hayes, L. Iannotti, Antonino Zichichi, R. Loveless, C. Coldewey, J. Shulman, T. Fusayasu, Juan Terron, M. Kasprzak, C.R. Sampson, Jeffrey T. Rahn, Marcel Vreeswijk, R. Ullmann, V.A. Noyes, O. Schwarzer, Helen F Heath, D.D. Reeder, J. Del Peso, C. Rembser, N. A. McCubbin, P. Giusti, Gm Levman, Marco Schioppa, S. Magill, N.C. Brummer, P. G. Pelfer, S.H. An, G. Drews, W.F. Badgett, A.S. Proskuryakov, J. Hartmann, C. Voci, M. Wodarczyk, D. S. Waters, K. Homma, Cristiana Peroni, R. J. Cashmore, K. Yamauchi, M. Y. Pac, W. Hain, C. M. Ginsburg, A. Meyer-Larsen, U. Wollmer, J.J. Ryan, Richard Hall-Wilton, M. Derrick, T. Tymieniecka, S. Ritz, M. Roco, M.A.J. Botje, N. Cartiglia, J. Stamm, B. Foster, U. Kötz, Jonathan Butterworth, S. Yamada, M. C. Petrucci, A. Pesci, H. Kowalski, U. Fricke, S. Mattingly, A. Caldwell, A. Bertolin, Silvia Maselli, N. Gendner, D. Simmons, M. L. Utley, H. Zhang, J. F. Martin, A. Nigro, Fernando Barreiro, Mauro Morandin, Z. Jakubowski, R. S. Orr, F. Palmonari, S. Wölfle, Amedeo Staiano, U. F. Katz, O. Ruske, M. Pfeiffer, M. Brkic, Yuji Yamazaki, D. Horstmann, N. H. Brook, V. L. Harris, Rosario Nania, Sung Keun Park, John Hart, T. Tsurugai, J.T. Bromley, J. Breitweg, F. Ricci, R. J. Nowak, H. F.W. Sadrozinski, Giuseppe Levi, H. Park, Kenneth Long, J. Y. Kim, G. Bari, D. Filges, C. L. Kim, A.F. Whitfield, D. Hasell, G. D'Agostini, R. Kerger, K. Jelen, Matthias Kasemann, A. Prinias, J. F. de Trocóniz, L. Zawiejski, Roberto Cirio, Elisabetta Gallo, A. Bruni, L.K. Gladilin, S. W. Nam, W.R. Frisken, R. Pawlak, F. Selonke, Pietro Antonioli, Luisa Cifarelli, Neville Harnew, E. Hilger, J. Repond, P.B. Straub, D. Piccioni, W. Koch, D.S. Hanna, J.J. Engelen, T. Y. Ling, P. B. Kaziewicz, L. Lamberti, T. Yamashita, M. Löwe, Thomas Trefzger, F. Pelucchi, B. Bednarek, L. Lindemann, K.F. Johnson, S. Sampson, J. A. Zakrzewski, Y. Zamora Garcia, H. Beier, Tadeusz Kowalski, M. Nakao, Robert Klanner, A. Vaiciulis, D.G. Roff, H. Salehi, D. Notz, M. Rohde, D. Sideris, T. W. Jones, D. Revel, Michele Arneodo, Ulf Behrens, Federico Cindolo, B.Y. Oh, H. Uijterwaal, U. Schneekloth, D. Acosta, T. Voß, I. Butterworth, I. Suzuki, G. Poelz, F. Zetsche, K. Coböken, D. B. Miller, L.W. Hung, G. L. Bashindzhagyan, W.B. Schmidke, R. J. Teuscher, M. Lancaster, Anselmo Margotti, Enrico Tassi, J. J. Whitmore, R. Waugh, R. Cross, L.W. Wiggers, C. Amelung, Miriam Lucio Martinez, J. Gilmore, S. B. Lee, Y. Iga, A. M. Cooper-Sarkar, S. Dagan, J. Bulmahn, C. A. Heusch, J.T. Wu, A. Ochs, Mariusz Przybycien, M. Corradi, Vincenzo Monaco, L. Suszycki, M. Khakzad, James Crittenden, Andrea Contin, Katsuo Tokushuku, S. Polenz, G. Cases, M. Basile, A. Pellegrino, T. Haas, Giancarlo Susinno, Yu. A. Golubkov, F. Anselmo, M. Inuzuka, C.H. Bokel, Lucia Votano, C. Nath, C.-P. Fagerstroem, R. Yoshida, B.D. Burow, Costas Foudas, L.W. Mo, B. Surrow, Umberto Dosselli, Jongmin Lee, M.C.K. Mattingly, E. Lohrmann, L. S. Durkin, I. Gialas, B. H. Y. Hung, H.J. Grabosch, Luca Stanco, Lev Khein, A. N. Solomin, T. Ishii, B. Musgrave, U. Mallik, J.I. Fleck, J. Zaja̧c, J. M. Pawlak, R. Hamatsu, Janusz Chwastowski, J. Puga, D.G. Stairs, J.D. McFall, T. Monteiro, M. Posocco, O. Deppe, H.E. Blaikley, Y. Eisenberg, L. M. Shcheglova, D.J. Gilkinson, Guillaume Garcia, R. Walczak, S. Kananov, J. P. Fernandez, J. K. Sedgbeer, E. Paul, A. Garfagnini, P.F. Ermolov, K. Nagano, R. Deffner, G. Bruni, K. Muchorowski, E. A. De Wolf, M. Grothe, J. R. Tickner, K. Heinloth, L. Heinz, J. M. Hernandez, J. K. Bienlein, Giuseppe Barbagli, H. Wieber, J. Roldán, M. Adamus, G. Briskin, Leszek Adamczyk, I. A. Korzhavina, G. Marini, R. Wedemeyer, W.N. Cottingham, Wolfram Dietrich Zeuner, A.K. Wróblewski, A. Bamberger, A. Stifutkin, G.P. Heath, Marcella Capua, Giuseppe Iacobucci, D. Westphal, J. Labs, B. Lu, G. Sartorelli, R. Stanek, S.A. Zotkin, N. Tuning, I.H. Park, M.I. Ferrero, M. Przybycien, J. Große-Knetter, U. Karshon, A.A. Savin, D.S. Bailey, D. Mikunas, P. Nylander, K. K. Joo, Luis Hervas, R. G. Feild, J. Ciborowski, D. Boscherini, A.F. Żarnecki, K. Desler, D. Krakauer, I. Bohnet, Tomohiro Abe, G. Castellini, W.N. Murray, Z. Jing, J.S.T. Ng, Vladimir Bashkirov, A. Quadt, P. Cloth, O. Mańczak, P. Markun, D. Kçira, G. F. Hartner, Ben Bylsma, J. Milewski, M. Bukowy, F. Corriveau, G. Grzelak, M. Eckert, N.A. Korotkova, L. Bellagamba, H. Hartmann, T. C. Bacon, M. Dardo, P. Borzemski, W. Liu, S. De Pasquale, A.S. Wilson, Sridhara Dasu, Ian Brock, R. Ayad, O. Yu. Lukina, S Campbell-Robson, Halina Abramowicz, W. Schott, Cd Catterall, A. Polini, Z. Duliński, R.L. Talaga, J.A. Parsons, D. Epperson, J.K. Edmonds, A.I. van Sighem, K. Wick, G. Abbiendi, G. Cara Romeo, M. Riveline, S. Eisenhardt, F. Sciulli, J.N. Lim, G. Howell, R.J. Tapper, A. Meyer, H.G.J.M. Tiecke, E. Strickland, Giovanni Maccarrone, D. Hochman, S. Schlenstedt, P. J. Bussey, E. Rulikowska-Zarȩbska, Joanne Cole, T.P. Shah, Mark Sutton, S. M. Wang, D. H. Saxon, C. Glasman, A. Bornheim, Tachishige Hirose, P. Göttlicher, Roberto Carlin, D. Chapin, J.B. Lane, Gy. Wolf, Roberto Sacchi, T. Matsushita, R. Stroili, Aharon Levy, Laurel E. Sinclair, A. Seiden, J.H. Vossebeld, M. Raso, A. Eskreys, A. T. Doyle, L. Labarga, Wouter Verkerke, B. A. Dolgoshein, Ada Solano, S. Limentani, I. T. Lim, S. Bhadra, B. Löhr, S. Kitamura, A. Kotański, L.A.T. Bauerdick, J.R. Okrasiński, U. Holm, Krzysztof Piotrzkowski, K. Ohrenberg, W. H. Smith, R. Graciami, Mário Costa, F.S. Chlebana, and Zeus (IHEF, IoP, FNWI)
Subjects: COLLISIONS, Nuclear and High Energy Physics, Particle physics, Photon, Astrophysics::High Energy Astrophysical Phenomena, FOS: Physical sciences, Photon energy, 01 natural sciences, 7. Clean energy, CROSS-SECTIONS, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), GLOBAL QCD, 0103 physical sciences, CALORIMETER, 010306 general physics, Nuclear Experiment, COMPTON-SCATTERING, Quantum chromodynamics, Physics, Jet (fluid), ZEUS (particle detector), CONSTRUCTION, 010308 nuclear & particles physics, Compton scattering, ZEUS, HERA, CENTRAL TRACKING DETECTOR, PARTON DISTRIBUTIONS, Pseudorapidity, High Energy Physics::Experiment, HARD SCATTERING
Abstract: Events containing an isolated prompt photon with high transverse energy, together with a balancing jet, have been observed for the first time in photoproduction at HERA.The data were taken with the ZEUS detector, in a $\gamma p$ centre of mass energy range 120--250 GeV. The fraction of the incoming photon energy participating in the production of the prompt photon and the jet, $x_\gamma$, shows a strong peak near unity, consistent with LO QCD Monte Carlo predictions. In the transverse energy and pseudorapidity range $5\le \eTg < 10$ GeV, $-0.7 \le \eta^\gamma < 0.8$, $\eTj\ge 5$ GeV, and $-1.5\le \eta^{jet}\le 1.8$, with $\xgO > 0.8,$ the measured cross section is $15.3 \pm 3.8 \pm 1.8 pb$, in good agreement with a recent NLO calculation., Comment: 22 pages including 8 figures
Published: 1997

13. Measurement of Multiplicity and Momentum Spectra In the Current Fragmentation Region of the Breit Frame At Hera

Author: H.G.J.M. Tiecke, D. Haun, F. Benard, S. Kartik, K. Desler, E. McCliment, Nicolo Cartiglia, Mariusz Przybycien, I. Fleck, S. Yang, A. Seiden, Francois Corriveau, S. Campbell-Robson, R.S. Gilmore, D. J. Gilkinson, H.J. Grabosch, A. Meyer, Matthias Kasemann, K. M. Furutani, D. Notz, S. H. Yon, T. W. Jones, Anna Goussiou, G. L. Bashindzhagyan, N. P. Zotov, W.B. Schmidke, R. J. Teuscher, A. Kotański, W. Metcalf, I. H. Park, Ben Bylsma, J. Milewski, O. Deppe, J. F. Martin, H. Hartmann, Jose M Hernandez, Sridhara Dasu, Halina Abramowicz, G. Lacobucci, S.S. Wilson, A. Eskreys, A. T. Doyle, L. Labarga, B. Surrow, N. Pavel, I. Suzuki, R. Yoshida, Marcel Vreeswijk, T. Yip, Hartmut Sadrozinski, Guenter Wolf, A. Bernstein, Y. Zamora Garcia, Wouter Verkerke, Thomas Trefzger, R. Schattevoy, J.B. Lane, Rr Rau, L. Köpke, T. Voß, U. Holm, R. R. McNeil, B. A. Dolgoshein, J.D. McFall, J. Del Peso, William S. Lockman, P.F. Ermolov, D. Zer-Zion, R. Imlay, S. Magill, I. A. T. Bauerdick, Andrea Contin, C. Fordham, L. M. Shcheglova, Y. Nakamitsu, Katsuo Tokushuku, K. Charchuła, A. Bruni, R. Loveless, A. Nigro, L.E. Sinclair, K. Homma, Ada Solano, Giuseppe Levi, M.B. Crombie, R. J. Tapper, M. Löwe, S. Dagan, S. Limentani, M. Khakzad, Umberto Dosselli, A. Kruse, M. L. Cardy, K. Jelen, P. Cloth, K. Honscheid, Yu. A. Golubkov, Marco Schioppa, B. Lu, Cristiana Peroni, Douglas Gingrich, W.R. Frisken, H.-P. Jakob, A.F. Whitfield, S.M. Mari, I. Ali, M. Geerts, K. Blankenship, R. L. Saunders, Hao Zhang, J. Kochocki, P. G. Pelfer, P. Luffman, A. Frey, K. Prytz, D. S. Bailey, B. D. Burow, Helen F Heath, Krzysztof Piotrzkowski, Janusz Chwastowski, Y Zhang, E. Barberis, A. N. Solomin, R. J. Cashmore, U. Mallik, Greg P Heath, R. Brugnera, C.R. Sampson, J. J. Whitmore, Jeffrey T. Rahn, M. Posocco, Geoffrey Smith, J.F. Zhou, V. A. Kuzmin, D. C. Bailey, M. De Giorgi, S. Bhadra, Yasunori Yamazaki, J. M. Pawlak, G.A. Blair, K. Eskreys, W.N. Murray, G. Anzivino, J. Mollen, H. Hultschig, C.J.S. Morgado, R. Seidlein, Giancarlo Susinno, M. Roco, Michele Arneodo, E. A. De Wolf, Vladimir Bashkirov, M. Derrick, P. M. Patel, V. Stamm, T. Tymieniecka, P. Bruni, Costas Foudas, Gm Levman, John Hart, H. I. Kim, M. Nakao, P. Borzemski, A. Mass, K. K. Joo, A.S. Wilson, I. Butterworth, T.P. Shah, J. A. O'Mara, J. Große-Knetter, U. Schneckloth, G. Grzelak, L.W. Mo, Christian Nemoz, Y. Iga, O. Mańczak, K. Yamauchi, G. F. Hartner, Masashi Hazumi, T. C. Bacon, G. Cara Romeo, S. M. Wang, S. Eisenhardt, D. H. Saxon, Antonino Zichichi, S.H. An, B. Gutjahr, N. Dyce, C. Rembser, U. Kötz, A. Caldwell, C. Voci, Fernando Barreiro, N. A. McCubbin, S. De Pasquale, Martin Utley, A. Prinias, Mauro Morandin, Jose Repond, K. Ohrenberg, A. Cassidy, G. Geitz, M. Nakahata, K. Muchorowski, Ta Romanowski, K.W. McLean, L. W. Hung, D. Krakauer, W. Koch, B. Y. H. Hung, I. F. de Trocóniz, A. Ladage, Meng Wang, W. H. Smith, A. A. Savin, T. Tsurugai, I. Gialas, V. K. Nadendla, J. Schroeder, R. J. Nowak, S. Söldner-Rembold, T. Doeker, A. Bargende, E. Tassi, U. F. Katz, E. Rulikowska-Zarebska, J. Roldán, F. Selonke, L. Suszycki, E. Hilger, A.S. Proskuryakov, F. F. Wilson, Roberto Sacchi, Y. Nagasawa, B. Hubbard, Mário Costa, M. Chiarini, J. A. Zakrzewski, F. J. Sciulli, T. Neumann, Leszek Adamczyk, R. van Woudenberg, D. Westphal, A. Byrne, R. Wedemeyer, Rosario Nania, Sung Keun Park, D. Revel, D. J. P. Norman, H. Beier, Jonathan Butterworth, Claudia Glasman, F.S. Chlebana, Tadeusz Kowalski, M. Krzyżanowski, G. Cases, Aharon Levy, M.I. Ferrero, A. Freidhof, P.M. Kooijman, D. K. Hasell, E. Gallo, R. Stanek, J. N. Lim, E. Badura, R. Sinkus, Ulf Behrens, Federico Cindolo, W. Bogusz, H. Kowalski, D. Schramm, C. A. Heusch, S. Kitamura, Luca Stanco, J. Shulman, S. Mine, B.Y. Oh, J. K. Sedgbeer, G. Poelz, E. Lohrmann, U. Karshon, Juan Terron, M. Kasprzak, Lutz Feld, Jens Hartmann, G. Bruni, C. Li, G. Zech, L. Hagge, Samuel Silverstein, T. Ishii, W. Schulz, James Crittenden, D. Acosta, Tobias M. Haas, M.C.K. Mattingly, L. S. Durkin, Luis Hervas, Dg Stairs, A. Dannemann, R. Hamatsu, J. Puga, R. S. Orr, J. K. Bienlein, P. B. Straub, M. Zachara, M. Adamus, G. Marini, A.K. Wróblewski, A. Bamberger, M. Grothe, Shoichi Yamada, R.C.E. Devenish, Amanda Cooper-Sarkar, D. Boscherini, Kenneth Long, B. Behrens, G. Bari, R. J. Seifert, A. Quadt, J. Bulmahn, Simon George, B. Löhr, G. Laurenti, Tachishige Hirose, F. Dal Corso, M. Van Hook, V.A. Jamieson, B. Bednarek, T. Hasegawa, A. Leich, R. Avad, P. Joos, W.F. Badgett, M. Kuze, M. Flasińki, B. Foster, Debades Bandyopadhyay, F. Zetsche, L. Iannotti, L. Wai, T. J. Llewellyn, Luisa Cifarelli, L. K. Gladilin, Neville Harnew, R. Stroili, G. Castellini, S. M. Hong, R. L. Talaga, J.S.T. Ng, Masami Chiba, Klaus Kurt Desch, S. W. Nam, J.J. Engelen, S. Ritz, D. S. Hanna, Anselmo Margotti, L.W. Wiggers, M. Brkic, Cg Matthews, G. D'Agostini, P. Giusti, G. Zacek, G. Drews, J. A. Parsons, T. Y. Ling, W. Hain, L. Lindemann, Giovanni Abbiendi, S. Nickel, D. B. Miller, M.A.J. Botje, Robert Klanner, A. Vaiciulis, J. Gajewski, Ricardo Graciani, M. Eckert, L. Bellagamba, Y. Eisenberg, M. Basile, V. D. Kobrin, T. Dubbs, J. Biltzinger, C. P. Fagerstroem, F. Palmonari, R. Walczak, K. Heinloth, Giuseppe Barbagli, Amedeo Staiano, Danuta Kisielewska, G. Sartorelli, T. Massam, D. Filges, A. Bertolin, L. Zawiejski, M. Lancaster, C. Youngman, Roberto Cirio, J.T. Wu, J. Zając, D. Mikunas, M. Rohde, A. H. Walenta, B. Musgrave, M. St.Laurent, K. Wick, P. Morawitz, G. Briskin, E. Paul, Q. Zhu, A. Stifutkin, Aleksander Filip Żarnecki, Silvia Maselli, R. G. Field, J. Ciborowski, R. Ullmann, D. Horstmann, R. Timellini, A. Dake, N. H. Brook, M. Dardo, C. Coldewey, V. L. Harris, Lucia Votano, C. Nath, D. Lüke, H. Heßling, A. Polini, M. H. Suh, T.L. Short, Efstathios Stiliaris, D. Daniels, M. de Kamps, J. F. Labs, Giovanni Maccarrone, S. Schlenstedt, P. J. Bussey, Roberto Carlin, D.D. Reeder, B. Diekmann, M. Wodarczyk, P. B. Kaziewicz, L. Lamberti, H. Uijterwaal, S. Mengel, J. Mainusch, Avto Kharchilava, W. Schott, Cd Catterall, and P. Göttlicher
Subjects: Quark, Particle physics, E+E ANNIHILATION, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, FOS: Physical sciences, Elementary particle, ZEUS, SIMULTANEOUS PATTERN-RECOGNITION, CENTRAL TRACKING DETECTOR, KALMAN FILTERING METHOD, JET FRAGMENTATION, HADRON DISTRIBUTIONS, QUARK FRAGMENTATION, PETRA ENERGIES, QCD JETS, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), deep inelastic scattering, 0103 physical sciences, Quantum field theory, Multiplicity (chemistry), 010306 general physics, Engineering (miscellaneous), Physics, Quantum chromodynamics, 010308 nuclear & particles physics, HERA, Deep inelastic scattering, Charged particle, High Energy Physics::Experiment
Abstract: Charged particle production has been measured in Deep Inelastic Scattering (DIS) events using the ZEUS detector over a large range of $Q^2$ from 10 to $1280 {\rm\ GeV}^2$. The evolution with $Q$ of the charged multiplicity and scaled momentum has been investigated in the current fragmentation region of the Breit frame. The data are used to study QCD \linebreak coherence effects in DIS and are compared with corresponding \ee~data in order to test the universality of quark fragmentation., 33 pages, latex, 8 figures appended as uuencoded file
Published: 1995

14. Inclusive Jet Differential Cross Sections in Photoproduction at HERA

Author: Giuseppe Iacobucci, Y Zhang, S. Nickel, Antonino Zichichi, D. B. Miller, J. Gajewski, Douglas Gingrich, M. Basile, V. D. Kobrin, T. Dubbs, J. Biltzinger, P. Göttlicher, D. Haun, Giuseppe Levi, K. Jelen, W. Kröger, D. Acosta, Dg Stairs, G. Cases, J. Mollen, I. Butterworth, Y. Iga, Christian Nemoz, Cristiana Peroni, Y. Nakamitsu, Katsuo Tokushuku, R. J. Cashmore, N. Dyce, Fernando Barreiro, J.K. Mayer, A. Bertolin, K. Prytz, Luis Labarga, J. F. de Trocóniz, Umberto Dosselli, R. Ayad, C. Voci, S. Bhadra, M. Roco, D. J. Gilkinson, M. Derrick, W. Metcalf, Martin Utley, U. Holm, G.P. Heath, Krzysztof Piotrzkowski, Mauro Morandin, L. Zawiejski, Roberto Cirio, G. Cara Romeo, M. Brkic, Jose Repond, P. de Jong, T. Tymieniecka, K. Ohrenberg, Janusz Chwastowski, Jens Hartmann, G. D'Agostini, Thomas Trefzger, T. Doeker, L. W. Hung, Hartmut Sadrozinski, G. Geitz, Meng Wang, P. Giusti, G. Zacek, G. Drews, J. A. Parsons, T. Y. Ling, L. Lindemann, G. Zech, J.D. McFall, P.F. Ermolov, K. K. Joo, Giovanni Abbiendi, W. H. Smith, Mário Costa, W. Hain, B. Y. H. Hung, H.G.J.M. Tiecke, A. Bargende, A.H. Walenta, Robert Klanner, R. R. McNeil, E. A. De Wolf, U. Kötz, E. Tassi, U. F. Katz, J. Schlereth, F.S. Chlebana, P. Bruni, A. Cassidy, Costas Foudas, Ta Romanowski, K. Wick, Simon George, F. Benard, M. Rohde, Claudia Glasman, Marco Schioppa, K. Charchuła, A. Bruni, J. F. Martin, M. Löwe, Tachishige Hirose, C.J.S. Morgado, Michele Arneodo, A. Eskreys, P. G. Pelfer, L.W. Mo, Djp Norman, M.A.J. Botje, M. Iori, D. Revel, R. Stanek, E. Badura, S. Nagayama, B. Musgrave, Luca Stanco, F. F. Wilson, A. Meyer, T. Yip, M. Chiarini, M. Kuze, V. O'Dell, O. Mańczak, G. F. Hartner, J. J. Whitmore, R. Seidlein, J. K. Bienlein, B.D. Burrow, P. Cloth, R. Imlay, M. Nakahata, M. St.Laurent, Guenter Wolf, A. Bernstein, Y. Zamora Garcia, T. Voß, P. Morawitz, A. Caldwell, F. Palmonari, F. Ikraiam, A. Mass, J. K. Sedgbeer, J. Kochocki, F. Frasconi, V. K. Nadendla, Jonathan Butterworth, Lucia Votano, C. Nath, I. Gialas, H. Heßling, A. A. Savin, L. Wai, Amedeo Staiano, S. Magill, J. Schroeder, L. Suszycki, Marcel Vreeswijk, Andrea Contin, G. Bruni, A. Kruse, R. Loveless, R. Stroili, R. J. Nowak, D. Schramm, C. A. Heusch, Cg Matthews, E. Paul, C. Fordham, Ulf Behrens, Federico Cindolo, W. Bogusz, H. Kowalski, K.W. McLean, A. Ladage, M. Zachara, F. Ciralli, Leszek Adamczyk, J. Del Peso, A. Shapira, F. J. Sciulli, S. Söldner-Rembold, E. Lohrmann, Y. Eisenberg, L.E. Sinclair, F. Dal Corso, K. Homma, T. Hasegawa, M.I. Ferrero, A. Freidhof, R. Graciani, Matthias Kasemann, T. Poser, A. Stifutkin, M. Lancaster, R. G. Feild, A. Leich, B. Lu, J.T. Wu, M.B. Crombie, K.M. Furutani, I. Ali, D. Notz, Vladimir Bashkirov, R. Walczak, B. Ladage, W.N. Murray, G. Anzivino, L. Bellagamba, S. H. Yon, James Crittenden, Aleksander Filip Żarnecki, Silvia Maselli, K. Heinloth, D. S. Bailey, J. Zaja̧c, T. W. Jones, Anna Goussiou, W. Schulz, Debades Bandyopadhyay, A. Nigro, L. S. Durkin, G. Grzelak, Giuseppe Barbagli, D. Daniels, G. L. Bashindzhagyan, N. P. Zotov, R. J. Teuscher, T. C. Bacon, M. Nakao, P. Borzemski, A.S. Wilson, E. Barberis, Helen F Heath, Wr Frisken, T.L. Short, Efstathios Stiliaris, A. N. Solomin, M. Geerts, K. Blankenship, G. Briskin, A Furtjes, M. Grothe, R.J. Tapper, D. Horstmann, R. Timellini, A. Dake, N. H. Brook, U. Mallik, E. Rulikowska-Zarȩbska, A.F. Whitfield, S.M. Mari, L. Hagge, R. S. Orr, M. de Kamps, S. Qian, H. J. Kim, S. Mine, P. B. Straub, I. H. Park, Ben Bylsma, J. Milewski, Giovanni Maccarrone, V. L. Harris, I. Fleck, S. Schlenstedt, P. J. Bussey, Kenneth Long, R. Hamatsu, B. Behrens, J. Puga, H. Hartmann, Yasunori Yamazaki, D. Krakauer, Danuta Kisielewska, G. Bari, T. Massam, S. M. Hong, C.R. Sampson, Jose M Hernandez, H. Hultschig, Stan Bentvelsen, C. Youngman, M. Van Hook, V.A. Jamieson, B. Bednarek, M. Mattioli, R. Beuselinck, Jeffrey T. Rahn, Sridhara Dasu, Lothar At Bauerdick, R. L. Talaga, S Campbell-Robson, Halina Abramowicz, T. Ishii, J. F. Labs, B. Löhr, H. Kammerlocher, G. Sartorelli, John Hart, F. Zetsche, J. L. Thron, P. Joos, J. Stamm, B. Foster, Roberto Carlin, Luisa Cifarelli, L. K. Gladilin, Neville Harnew, P. M. Patel, Samuel Silverstein, S. Böttcher, A. Prinias, J. Ciborowski, R. Ullmann, S.H. An, M. Dardo, C. Coldewey, B. Krebs, D. Lüke, A. Polini, M. H. Suh, B. Gutjahr, Y. Nagasawa, U. Schneekloth, W. Koch, J. A. Zakrzewski, Amanda Cooper-Sarkar, Nicolo Cartiglia, M. Adamus, J.B. Lane, T. Neumann, G. Marini, T. Tsurugai, S. Yang, Masashi Hazumi, F. Arzarello, R. J. Seifert, Rr Rau, A. Quadt, R.S. Gilmore, C. Rembser, N. A. McCubbin, A.K. Wróblewski, A. Bamberger, L. Köpke, J.A. O'Mara, H.J. Grabosch, Mariusz Flasiński, S. Dagan, S. Kitamura, Tadeusz Kowalski, S.S. Wilson, F. Selonke, E. Hilger, A. Byrne, K. Honscheid, Yu. A. Golubkov, M. Krzyżanowski, S. Kartik, D.D. Reeder, G. Poelz, Lutz Feld, J. Roldán, A.S. Proskuryakov, B.Y. Oh, R. van Woudenberg, M Eckart, B. Diekmann, Francois Corriveau, C. Li, Detlef Filges, M. Posocco, Geoffrey Smith, A. Kotański, P.M. Kooijman, D. K. Hasell, E. Gallo, J. Shulman, Tobias M. Haas, Juan Terron, M. Kasprzak, Ada Solano, Shoichi Yamada, R.C.E. Devenish, S. Limentani, P. B. Kaziewicz, L. Lamberti, H. Uijterwaal, G.A. Blair, G. Laurenti, S. Mengel, J. Mainusch, C. Rethfeldt, W. Schott, Cd Catterall, L. Iannotti, H.-P. Jakob, R. L. Saunders, R. Brugnera, V. A. Kuzmin, D. C. Bailey, M. De Giorgi, Gm Levman, S. De Paspuale, E. McCliment, N. Pavel, I. Suzuki, Rosario Nania, Sung Keun Park, William S. Lockman, A. Seiden, A. Dannemann, M. Przybycień, A. T. Doyle, J. Bulmahn, A.G. Tenner, Wouter Verkerke, R. Schattevoy, R. Yoshida, B. A. Dolgoshein, T. Kȩdzierski, T. Nagira, Roberto Sacchi, B. Hubbard, J. M. Pawlak, Aharon Levy, T.J. Llewellyn, J. N. Lim, R. Sinkus, J.-L. Schneider, K. Muchorowski, P. Luffman, A. Frey, R. Wedemeyer, K. Eskreys, T.P. Shah, S. M. Wang, D. H. Saxon, Masami Chiba, Klaus Kurt Desch, S. W. Nam, J.J. Engelen, S. Ritz, D. S. Hanna, Anselmo Margotti, L.W. Wiggers, D. Westphal, G. Theisen, U. Karshon, Luis Hervas, D. Boscherini, G. Susinno, Saverio D'Auria, G. Castellini, J.S.T. Ng, L. M. Shcheglova, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Photon, Logarithm, LUND MONTE-CARLO, Monte Carlo method, Hadron, Parton, 01 natural sciences, 7. Clean energy, EVENTS, COLLIDER, Nuclear physics, 0103 physical sciences, photoproduction, differential cross section, CALORIMETER, 010306 general physics, Parton shower, Nuclear Experiment, Physics, E+E-PHYSICS, 010308 nuclear & particles physics, ZEUS, LEADING-ORDER QCD, HERA, PHOTON, DIFFRACTIVE HARD SCATTERING, PARTON DISTRIBUTIONS, FRAGMENTATION, High Energy Physics::Experiment
Abstract: Inclusive jet differential cross sections for the reaction ep → jet + X at Q2 below 4 GeV2 have been measured with the ZEUS detector at HERA using an integrated luminosity of 0.55 pb-1. These cross sections are given in the kinematic region 0.2 < y < 0.85, for jet pseudorapidities in the ep-laboratory range -1 < ηjet < 2 and refer to jets at the hadron level with a cone radius of one unit in the η - φ plane. These results correspond to quasi-real photoproduction at centre-of-mass energies in the range 130-270 GeV and, approximately, for jet pseudorapidities in the interval -3 < ηjet(γρ CMS) < 0. These measurements cover a new kinematic regime of the partonic structure of the photon, at typical scales up to ∼300 GeV2 and photon fractional momenta down to xγ ∼ 10-2. Leading logarithm parton shower Monte Carlo calculations, which include both resolved and direct processes and use the predictions of currently available parametrisations of the photon parton distributions, describe in general the shape and magnitude of the measured ηjet and ETjet distributions.
Published: 1995

15. Exclusive $\rho^{0}$ production in deep inelastic electron-proton scattering at HERA

Author: K. K. Joo, M. Martinez, J. F. Martin, A. Nigro, T. Yip, O. Mańczak, G. F. Hartner, A.F. Whitfield, S.M. Mari, A. Eskreys, Djp Norman, D. Westphal, Guenter Wolf, A. Bernstein, J. T. Rahn, U. Karshon, Y. Zamora Garcia, T. Voß, M.A.J. Botje, Thomas Trefzger, Luis Hervas, Andrea Contin, A. Kruse, D. Boscherini, G. Susinno, T. Monteiro, Detlef Filges, L. M. Shcheglova, Marcella Capua, G. Castellini, P.M. Kooijman, D. K. Hasell, Antonino Zichichi, F. Palmonari, N. Cartiglia, E. Gallo, A. Prinias, W. Koch, Roberto Sacchi, H.G.J.M. Tiecke, F. Benard, J.S.T. Ng, B. Löhr, P. Joos, J. Stamm, P. Bruni, Costas Foudas, B. Foster, Ta Romanowski, J. Shulman, Claudia Glasman, Giuseppe Iacobucci, Luisa Cifarelli, L. K. Gladilin, Neville Harnew, Amedeo Staiano, Danuta Kisielewska, R. Yoshida, L.W. Mo, R. Stanek, H. Beier, Tadeusz Kowalski, Juan Terron, M. Kasprzak, M. Pfeiffer, T. Massam, C. Youngman, Aharon Levy, T.J. Llewellyn, J. N. Lim, S. Dagan, R. Graciani, E. Badura, R. S. Orr, K. Honscheid, Yu. A. Golubkov, C. P. Fagerstroem, G. Poelz, Lutz Feld, R. Sinkus, Cristiana Peroni, R. J. Cashmore, Luis Labarga, Luca Stanco, E. Rulikowska-Zarȩbska, S. Mine, B. Lu, Ada Solano, Cg Matthews, A. Caldwell, G. Cases, H.-P. Jakob, Lothar At Bauerdick, F. F. Wilson, M. Chiarini, Yasunori Yamazaki, J. M. Pawlak, P. B. Straub, Kenneth Long, R. L. Saunders, M. Derrick, T. Tymieniecka, J. K. Sedgbeer, S. Limentani, M. Posocco, Geoffrey Smith, Tobias M. Haas, Jonathan Butterworth, John Hart, B. Behrens, G. Bruni, G. Bari, K.W. McLean, A. Ladage, U. Kötz, J.B. Lane, S. Söldner-Rembold, Jens Hartmann, R. Loveless, R. Brugnera, S. W. Nam, Shoichi Yamada, R.C.E. Devenish, F. J. Sciulli, Simon George, A. Frey, D. Krakauer, V. A. Kuzmin, D. C. Bailey, A. Bertolin, M. Van Hook, B. Bednarek, Rr Rau, O. Yu. Lukina, V. K. Nadendla, L. Köpke, J.A. O'Mara, M. Geerts, K. Blankenship, M. L. Utley, J.J. Engelen, M. Eckert, L. Bellagamba, A. Garfagnini, R. R. McNeil, G. Laurenti, S. Nickel, R. J. Nowak, F. Zetsche, C.R. Sampson, K. Muchorowski, Tachishige Hirose, M. De Giorgi, D. B. Miller, J. Gajewski, T.P. Shah, S. M. Wang, P. M. Patel, Lucia Votano, S. Ritz, D. S. Hanna, Y. Nagasawa, C. Nath, H. Heßling, J. F. de Trocóniz, Anselmo Margotti, D. J. Gilkinson, L. Zawiejski, D. H. Saxon, A. Freidhof, M. Khakzad, Roberto Cirio, K.F. Johnson, P. Giusti, L.W. Wiggers, L. Iannotti, J. K. Bienlein, F. Selonke, E. Hilger, V.A. Noyes, M. Basile, R. Wedemeyer, Giuseppe Levi, J. A. Zakrzewski, Douglas Gingrich, Gm Levman, D. S. Waters, V. D. Kobrin, T. Dubbs, J. Biltzinger, Ulf Behrens, Federico Cindolo, W. Bogusz, H. Kowalski, G. Zacek, S. Kartik, G. Drews, J. A. Parsons, W. Hain, M. Krzyżanowski, C. Fordham, M. Kuze, Y. Nakamitsu, Rosario Nania, Sung Keun Park, Katsuo Tokushuku, Masashi Hazumi, C. Rembser, N. A. McCubbin, S. Polenz, S. Mengel, Francois Corriveau, J. Mainusch, E. McCliment, W. Metcalf, K. Jelen, M. Rohde, K. Wick, K. Yamauchi, B. Musgrave, M. Zachara, M. St.Laurent, U. Holm, J. M. Hernandez, G.P. Heath, K. Charchuła, B.Y. Oh, A. Bruni, Umberto Dosselli, Janusz Chwastowski, A. Kotański, M. Brkic, A. Dannemann, A. Seiden, N. Wulff, M. Przybycień, A.H. Walenta, Masami Chiba, Klaus Kurt Desch, G. D'Agostini, E. Paul, Avto Kharchilava, C. Li, Christian Nemoz, W. Schott, J. Roldán, James Crittenden, N. Dyce, E. A. De Wolf, J. R. Tickner, Cd Catterall, T. Ishii, B. D. Burow, T. Y. Ling, A. T. Doyle, L. Wai, L. Lindemann, Wouter Verkerke, A. Stifutkin, E. Barberis, G. Zech, P. Morawitz, N. Pavel, I. Suzuki, B. A. Dolgoshein, R. Stroili, Giovanni Abbiendi, A.S. Proskuryakov, Robert Klanner, Lars Hagge, W.N. Murray, G. Anzivino, M. Lancaster, A. Vaiciulis, C. Voci, R. van Woudenberg, M. Löwe, J.T. Wu, J. Bulmahn, A. N. Solomin, B. Surrow, S. Bhadra, T.L. Short, Efstathios Stiliaris, M. Nakao, P. Borzemski, U. Mallik, J. P. Fernandez, D. C. Williams, Aleksander Filip Żarnecki, Silvia Maselli, Y. Eisenberg, William S. Lockman, J. Ciborowski, R. Ullmann, M.C.K. Mattingly, L. S. Durkin, T. Doeker, A.S. Wilson, S.H. An, M. Grothe, B. Gutjahr, R.J. Tapper, M. de Kamps, W. B. Schmidke, K. Heinloth, R. Hamatsu, Giuseppe Barbagli, I. Ali, V.A. Kurzhavina, D.D. Reeder, B. Diekmann, M. Wodarczyk, M. Dardo, C. Coldewey, J. Puga, H. J. Kim, A. Cassidy, Giovanni Maccarrone, D. Horstmann, R. Timellini, A. Dake, N. H. Brook, J. Große-Knetter, D. S. Bailey, V. L. Harris, M. Nakahata, M. Veeswijk, M. Adamus, O. Schwarzer, Helen F Heath, Wr Frisken, I. A. Korzhavina, I. Butterworth, Roman Walczak, D. Lüke, Y. Iga, A. Polini, G. Marini, S. Schlenstedt, P. J. Bussey, Fernando Barreiro, D. Acosta, Dg Stairs, T. Tsurugai, G. Sartorelli, Np Zotov, Wolfram Dietrich Zeuner, A.K. Wróblewski, A. Bamberger, Krzysztof Piotrzkowski, M. H. Suh, Mauro Morandin, U. Schneekloth, Marco Schioppa, J. J. Whitmore, P. G. Pelfer, J.I. Fleck, T. Neumann, D. Schramm, C. A. Heusch, Mariusz Flasiński, L. W. Hung, S. Kitamura, A. Byrne, R. Seidlein, K. Prytz, P. B. Kaziewicz, M. Corradi, S. Yang, L. Lamberti, D. Mikunas, J. Zaja̧c, A. Bargende, E. Tassi, R. Ayad, M. Roco, H. Uijterwaal, G. Cara Romeo, R.S. Gilmore, H.J. Grabosch, U. F. Katz, J. F. Labs, M. L. Cardy, J.F. Zhou, E. Lohrmann, O. Deppe, B. Y. H. Hung, D. Revel, A. Meyer, Roberto Carlin, S.S. Wilson, K.M. Furutani, W. Schulz, J. Del Peso, L.E. Sinclair, K. Homma, G. Briskin, Q. Zhu, Vladimir Bashkirov, Jose Repond, K. Ohrenberg, N. Bruemmer, Meng Wang, G. Grzelak, W. H. Smith, T. C. Bacon, Mário Costa, S. De Pasquale, F.S. Chlebana, I. Gialas, J. Schroeder, Leszek Adamczyk, M.I. Ferrero, R. G. Feild, Matthias Kasemann, P. Göttlicher, D. Notz, K. Desler, S. H. Yon, T. W. Jones, Anna Goussiou, G. L. Bashindzhagyan, R. J. Teuscher, Hartmut Sadrozinski, I. H. Park, Ben Bylsma, Hao Zhang, J. Milewski, H. Hartmann, Sridhara Dasu, S. Eisenhardt, S Campbell-Robson, Halina Abramowicz, J.D. McFall, P.F. Ermolov, D. Zer-Zion, P. Cloth, R. Imlay, S. Magill, F. Dal Corso, T. Hasegawa, A. Leich, W.F. Badgett, Debades Bandyopadhyay, S. M. Hong, R. L. Talaga, C.J.S. Morgado, Michele Arneodo, A. A. Savin, L. Suszycki, Samuel Silverstein, Amanda Cooper-Sarkar, R. J. Seifert, A. Quadt, J. Mollen, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Meson, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Pomeron, Cross section (physics), 0103 physical sciences, photoproduction, cross section measurement, 010306 general physics, DETECTOR, Physics, Quantum chromodynamics, Research Groups and Centres\Physics\Low Temperature Physics, 010308 nuclear & particles physics, Scattering, Faculty of Science\Physics, Perturbative QCD, ELECTROPRODUCTION, ZEUS, HERA, QCD, Gluon, High Energy Physics::Experiment
Abstract: The exclusive production of $\rho^0$ mesons in deep inelastic electron-proton scattering has been studied using the ZEUS detector. Cross sections have been measured in the range $7 < Q^2 < 25$ GeV$^2$ for $\gamma^*p$ centre of mass (c.m.) energies from 40 to 130 GeV. The $\gamma^*p \to \rho^0 p$ cross section exhibits a $Q^{-(4.2 \pm 0.8 ^{+1.4}_{-0.5})}$ dependence and both longitudinally and transversely polarised $\rho^0$'s are observed. The $\gamma^*p \to \rho^0 p$ cross section rises strongly with increasing c.m. energy, when compared with NMC data at lower energy, which cannot be explained by production through soft pomeron exchange. The data are compared with perturbative QCD calculations where the rise in the cross section reflects the increase in the gluon density at low $x$. the gluon density at low $x$., Comment: 22 pages, latex, 4 figures appended
Published: 1995

16. MEASUREMENT OF TOTAL AND PARTIAL PHOTON PROTON CROSS-SECTIONS AT 180 GEV CENTER-OF-MASS ENERGY

Author: S.H. An, B. Gutjahr, Danuta Kisielewska, Cg Matthews, D. Schramm, C. A. Heusch, F. Benard, Lorenzo Bellagamba, D. Westphal, C. Youngman, T. Tsurugai, E. McCliment, John Parsons, Y. Nakamitsu, E. Lohrmann, J.C. Giddings, H. Kreutzmann, D. Krakauer, K. Prytz, T. Poser, G. Theisen, U. Karshon, Luis Hervas, G. Susinno, K.M. Furutani, T. Y. Kim, S. Mine, C. Raine, Katsuo Tokushuku, R. J. Tapper, C. Peroni, M. Roco, F. Selonke, G. Cara Romeo, M. Przybycień, Masashi Hazumi, G. Geitz, Yuji Yamazaki, W. Schulz, R. Yoshida, N. A. McCubbin, F. Arzarello, Saverio D'Auria, A. Nigro, Umberto Dosselli, E. Hilger, C. Rembser, S. Böttcher, Ada Solano, Y. Nagasawa, J.B. Lane, Mariusz Flasiński, A. Byrne, Graziano Bruni, Wouter Verkerke, A.M. Khan, J.S.T. Ng, M. Mattioli, Simon George, Vladimir Bashkirov, Tobias M. Haas, F. J. Sciulli, Tachishige Hirose, M. Krzyżanowski, Antonino Zichichi, David Cussans, Janusz Chwastowski, Lothar At Bauerdick, S. Limentani, Rr Rau, A. Contin, R. Schattevoy, B. A. Dolgoshein, T. Nagira, L. Köpke, M. Kuze, A.F. Whitfield, B.Y. Oh, J. F. Martin, Ivor Fleck, J. A. Zakrzewski, A. Freidhof, L. Wai, N. Pavel, I. Suzuki, Ta Romanowski, W. Kröger, D. Acosta, Dg Stairs, P.L. Makkar, R. Stroili, I. H. Park, Ben Bylsma, G. Grzelak, S. Bentyelsen, T. C. Bacon, Shoichi Yamada, Richard Teuscher, M. Iori, T. Yip, J. Mollen, J. Milewski, J. Krüger, E. A. De Wolf, Claudia Glasman, B. Löhr, G.A. Blair, Michele Guida, J. M. Pawlak, E. Rulikowska-Zarebska, Jose Repond, K. Ohrenberg, F. F. Wilson, M. Chiarini, J.-L. Schneider, C. Li, S. Nickel, D. B. Miller, Abraham Seiden, T. Kedzierski, Meng Wang, W. Vogel, Guenter Wolf, A. Bernstein, Y. Zamora Garcia, M. Lancaster, D.D. Reeder, James Crittenden, H. Hartmann, J. Gajewski, J. Roldán, E. Badura, P. Joos, M. Basile, Jonathan Butterworth, Masami Chiba, Jose M Hernandez, K. Jeleń, R. van Woudenberg, W. H. Smith, S. De Pasquale, G. Laurenti, B. Foster, T. Massam, V. D. Kobrin, P. Göttlicher, E.N. Kuznetsov, Lucia Votano, Giuseppe Iacobucci, S. Kartik, B. Diekmann, H. Heßling, Robin Devenish, J. Biltzinger, L. Adamczyk, Luca Stanco, P. Bruni, Costas Foudas, L.W. Mo, Klaus Kurt Desch, K. Muchorowski, Mário Costa, C. Del Papa, Samuel Silverstein, S. Qian, P. Luffman, A. Frey, Giuseppe Levi, V. O'Dell, O. Mańczak, G. F. Hartner, Nicolo Cartiglia, D. Haun, Francois Corriveau, J. K. Sedgbeer, Detlef Filges, A.H. Walenta, F.S. Chlebana, G. Cases, J. Engelen, Sridhara Dasu, D. J. Gilkinson, K. Eskreys, Luisa Cifarelli, Neville Harnew, A Furtjes, F. Gasparini, S. Yang, D. K. Hasell, P. Giusti, G. Drews, Halina Abramowicz, E. Gallo, T. Bienz, A. Kotański, A. Caldwell, L. S. Durkin, A.G. Tenner, R. Wedemeyer, W. Metcalf, Silvia Maselli, U. Holm, Thomas Trefzger, Y. Eisenberg, A. Meyer, W. Hain, J. Shulman, R.S. Gilmore, H.J. Grabosch, H.-P. Jakob, W. S. Lockman, R. Hamatsu, J. Puga, Robert Orr, F. Frasconi, Rosario Nania, D. Horstmann, R. Timellini, A. Dake, I. Butterworth, T.P. Shah, R. Graciani, R. R. McNeil, N. H. Brook, V. L. Harris, Y. Iga, L. Lamberti, H. Uijterwaal, Matthias Kasemann, R. Walczak, K. Heinloth, A. Eskreys, Juan Terron, M. Kasprzak, Giuseppe Barbagli, R. Brugnera, Krzysztof Piotrzkowski, D. Notz, B. Lu, K. Charchuła, A. T. Doyle, J. Schlereth, K. Wick, S. H. Yon, M.A.J. Botje, Jens Hartmann, A. Kruse, S.S. Wilson, Douglas Gingrich, A. Cassidy, M. Nakahata, M. Adamus, J.R. Forbes, K.W. McLean, V. A. Kuzmin, D. C. Bailey, M. De Giorgi, A. Dannemann, T. W. Jones, Anna Goussiou, S. W. Nam, M. Löwe, J. Kochocki, S. Dagan, G. L. Bashindzhagyan, N. P. Zotov, Amanda Cooper-Sarkar, Marcel Vreeswijk, S. K. Park, P. Kooijman, F. Palmonari, G. Marini, Marco Schioppa, S. Kramarczyk, P. G. Pelfer, A. Ladage, S. Söldner-Rembold, A.K. Wróblewski, A. Bamberger, Roberto Sacchi, B. Hubbard, K. Honscheid, Yu. A. Golubkov, G. Sartorelli, J. J. Whitmore, R. J. Seifert, Ulf Behrens, Federico Cindolo, H. Kowalski, Amedeo Staiano, M. Stavrianakou, F. Ciralli, R. Seidlein, S. Ritz, D. S. Hanna, S. Mengel, J. Mainusch, Gm Levman, J. Bulmahn, H. Tiecke, Aharon Levy, T.J. Llewellyn, A. Vorvolakos, P.F. Ermolov, R. Loveless, R. Ayad, J. Del Peso, U. Schneekloth, T. Neumann, A. Mass, Anselmo Margotti, L.W. Wiggers, I. Gialas, Hartmut Sadrozinski, M. Nuti, J. Schroeder, M. Posocco, Geoffrey Smith, J. N. Lim, A. Prinias, J. A. Nash, R. Sinkus, Stefano Maria Mari, T.L. Short, Efstathios Stiliaris, L. Hagge, J. K. Bienlein, S. Kitamura, M. Geerts, K. Blankenship, C. Rethfeldt, W. Schott, Cd Catterall, R. J. Cashmore, Luis Labarga, W. Koch, Christian Nemoz, T. Ishii, C. Fordham, I. Ali, C.R. Sampson, A. Shapira, F. W. Bullock, G. Castellini, M. Derrick, M. de Kamps, N. Dyce, T. Tymieniecka, L.E. Sinclair, P. Cloth, Tadeusz Kowalski, R. Imlay, C. Voci, K. Homma, M. Zachara, Helen F Heath, Wr Frisken, M. Brkic, J. A. O'Mara, U. Kötz, H. J. Kim, S. Bhadra, Alessia Bruni, M.I. Ferrero, S. Magill, G. Poelz, Giovanni Maccarrone, Lutz Feld, Robert Stanek, G. D'Agostini, S. Schlenstedt, P. J. Bussey, P.M. Patel, R. G. Feild, C. O. Kim, V. K. Nadendla, H. Hultschig, T. Y. Ling, T. Doeker, S. Nagayama, B. D. Burow, H. Kammerlocher, John Hart, G. Zech, W.N. Murray, R. J. Nowak, Giovanni Abbiendi, F. Ikraiam, M.B. Crombie, C.J.S. Morgado, Michele Arneodo, G. Anzivino, N.C. Roocroft, Robert Klanner, M. Nakao, P. Borzemski, Fernando Barreiro, A.S. Wilson, A. A. Savin, L. Suszycki, F. Dal Corso, D. H. Saxon, T. Hasegawa, A. Leich, Af Zarnecki, Debades Bandyopadhyay, S. M. Hong, R. L. Talaga, Mauro Morandin, L. W. Hung, P. B. Straub, Kenneth Long, A. Bargende, U. F. Katz, B. Behrens, G. Bari, M. Van Hook, V.A. Jamieson, B. Bednarek, R. Beuselinck, D. Revel, A. A. Voronin, F. Zetsche, J. L. Thron, E. Barberis, A. N. Solomin, U. Mallik, T. Khatri, J.W. Mitchell, Greg P Heath, J. Ciborowski, R. Ullmann, M. Dardo, C. Coldewey, B. Krebs, Leonid Gladilin, D. Lüke, Davide Boscherini, D. Zer-Zion, P. de Jong, M. H. Suh, J.K. Mayer, A. Bertolin, D. Shaw, J. Zajc, J. F. de Trocóniz, L. Zawiejski, Roberto Cirio, M. Rohde, B. Musgrave, M. St.Laurent, E. Paul, A. Stifutkin, J. F. Labs, and Roberto Carlin
Subjects: Particle physics, Photon, Physics and Astronomy (miscellaneous), Proton, ZEUS, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, DIFFRACTION DISSOCIATION, MONTE-CARLO, HADRONIC PROPERTIES, COLLIDER ENERGIES, EVENT GENERATOR, HERA ENERGIES, PHOTOPRODUCTION, inelastic cross section, Nuclear physics, Vector meson, cross section measurement, Engineering (miscellaneous), Physics, ZEUS (particle detector), Detector, HERA, diffractive production, Cross section (geometry), High Energy Physics::Experiment, Center of mass
Abstract: Photon proton cross sections for elastic light vector meson production, σel νp, inelastic diffractive production, σnd νp, non-diffractive production, σd νp, as well as the total cross section, σtot νp, have been measured at an average υp center of mass energy of 180 GeV with the ZEUS detector at HERA. The resulting values are σel νp = 18 ± 7 μb, σd νp = 33 ± 8 μb, σnd νp = 91 ± 11 μb, and σtot νp 143 ± 17 μb, where the errors include statistical and systematic errors added in quadrature. © 1994 Springer-Verlag.
Published: 1994

17. Measurement of the Proton Structure-function F2 In ep Scattering At Hera

Author: E. Barberis, Fernando Barreiro, U. Mallik, T. Khatri, J.W. Mitchell, Greg P Heath, Mauro Morandin, Z. Jakubowski, R. Gläser, L. W. Hung, A. Bargende, D. Revel, A. A. Voronin, A. Meyer, A. Montag, Marcel Vreeswijk, J. Del Peso, L.E. Sinclair, K. Homma, M.B. Crombie, Marco Schioppa, P. G. Pelfer, S.J.P. Smith, I. McArthur, P. Bruni, Costas Foudas, L.W. Mo, K. U. Pösnecker, R. Seidlein, J. F. Martin, A. Mass, Guenter Wolf, A. Bernstein, Y. Zamora Garcia, A. Caldwell, F. Frasconi, M. Lancaster, D.D. Reeder, Masashi Hazumi, H. F.W. Sadrozinski, A. Shapira, B. Diekmann, R. Yoshida, B.D. Burow, F. Bernard, N. A. McCubbin, D. Haun, C. Del Papa, J.R. Forbes, K.W. McLean, F. J. Sciulli, A. Ladage, T. Kȩdzierski, A. Vorvolakos, G. Cases, M. Krzyanowski, A. Freidhof, B. Lu, T. Nagira, S. Söldner-Rembold, C.J.S. Morgado, Michele Arneodo, N.C. Roocroft, S.H. An, B. Gutjahr, J. M. Pawlak, R. Meijer Drees, P. Giusti, R. Brugnera, C. Fordham, V. A. Kuzmin, D. C. Bailey, M. De Giorgi, P.M. Hallam-Baker, T.L. Short, Efstathios Stiliaris, G. Castellini, M. Zachara, M. Iori, G. Drews, A. Nigro, Michele Guida, Jose Repond, James Crittenden, J. A. Parsons, J. Roldán, M. de Kamps, J. Nash, M. Kückes, R. van Woudenberg, L. Lamberti, G. Grzelak, D. Schramm, C. A. Heusch, T. C. Bacon, S. Böttcher, W. Hain, A. Eskreys, Gm Levman, S. Kramaczyk, A. Dwuraźny, A.F. Whitfield, A. A. Savin, Detlef Filges, H. Uijterwaal, H. J. Kim, M.A.J. Botje, F. Arzarello, K. Muchorowski, D. K. Hasell, E. Gallo, P.M. Patel, K. O'Shaughnessy, Mariusz Flasiński, L. Suszycki, Giovanni Maccarrone, K. Prytz, A. Byrne, S. De Pasquale, W.N. Murray, G. Anzivino, A Furtjes, F. Gasparini, A. Kruse, S. Schlenstedt, P. J. Bussey, J. Shulman, A. Zichini, W. H. Smith, G. Gloth, H. Müsch, R. Wedemeyer, Rosario Nania, Sung Keun Park, Ulf Behrens, Federico Cindolo, H. Kowalski, S. Qian, E. Lohrmann, F. Ciralli, H. Kreutzmann, I. Gialas, O. Lin, Silvia Maselli, M. Momayezi, M. Nuti, Juan Terron, M. Kasprzak, M. Nakao, P. Borzemski, E. Badura, Mário Costa, U. Contino, Samuel Silverstein, L. Hagge, J. Schroeder, F.S. Chlebana, Amedeo Staiano, Cg Matthews, S. W. Nam, A. Dannemann, T. Ishii, K.M. Furutani, I. Fleck, Leszek Adamczyk, M.I. Ferrero, J.D. Prentice, R. Timellini, A. Dake, N. H. Brook, V. L. Harris, G. Feild, J. Bulmahn, N. Pavel, P. Erhard, Jens Hartmann, W. Schulz, R. Loveless, I. Suzuki, P. Kooijman, T. S. Yoon, Giuseppe Iacobucci, T. Poser, S. Ritz, D. S. Hanna, R. J. Seifert, J.B. Lane, William S. Lockman, Anselmo Margotti, L.W. Wiggers, H. van der Lugt, Rr Rau, M. Geerts, K. Blankenship, R. R. McNeil, Danuta Kisielewska, A. Stopczyński, C. Youngman, C.R. Sampson, A. Contin, L. Köpke, Stefano Maria Mari, L. Bellagamba, A. Francescato, A. M. Cooper-Sarkar, S. Dagan, K. Charchuła, A. Bruni, J. K. Bienlein, J. Ciborowski, R. Ullmann, D. J. Gilkinson, W. Metcalf, Ta Romanowski, F. Dal Corso, M. Löwe, M. Dardo, Masami Chiba, K. Honscheid, Yu. A. Golubkov, S. Nagayama, P. Göttlicher, T. Hasegawa, J. Zaja̧c, Klaus Kurt Desch, A. Leich, S. Mengel, J. Mainusch, J. J. Whitmore, A.G. Tenner, H. Tiecke, F. Ikraiam, S. Nickel, D. B. Miller, U. Holm, Debades Bandyopadhyay, J. Gajewski, C. Coldewey, M. Posocco, B. Nizioł, B. Krebs, M. Basile, F. F. Wilson, T. Massam, J. Biltzinger, M. Chiarini, C. Peroni, M. Roco, Geoffrey Smith, K. Wick, C. Rethfeldt, W. Schott, Cd Catterall, H.-P. Jacob, F. Palmonari, E. Tscheslog, D. Westphal, G. Theisen, U. Karshon, A.F. arnecki, Krzysztof Piotrzkowski, Jonathan Butterworth, F. W. Bullock, G. Geitz, Luis Hervas, S. M. Hong, R. L. Talaga, D. Boscherini, G. Susinno, A.H. Walenta, Saverio D'Auria, D. Krakauer, Kr Long, D. Lüke, D. Zer-Zion, M. H. Suh, J.S.T. Ng, J. Kochocki, Simon George, Tachishige Hirose, Roberto Sacchi, Y. Nagasawa, A. Prinias, W. Koch, B. Hubbard, Giuseppe Levi, M. Kuze, R. Hamatsu, Tadeusz Kowalski, L. Wai, K. Jelen, J. Engelen, P.L. Makkar, R. Stroili, J. Mollen, G. Poelz, J.K. Mayer, Aharon Levy, D. Shaw, Tobias M. Haas, W. Kröger, J. N. Lim, E.N. Kuznetsov, O. Mańczak, Dg Stairs, Shoichi Yamada, R.C.E. Devenish, G. F. Hartner, G. Laurenti, J. F. de Trocóniz, I. Butterworth, Y. Iga, L. Zawiejski, Roberto Cirio, P. de Jong, J.-L. Schneider, W. Vogel, H. Brückmann, P. Luffman, A. Frey, M. Rohde, B. Musgrave, M. St.Laurent, K. Eskreys, T.P. Shah, D. H. Saxon, E. Paul, G. Cara Romero, G.G. Stairs, T. Tsurugai, E. McCliment, J.C. Giddings, D.M. Gingrich, A. Seiden, R. Casaccia, M. Przybycień, S.S. Wilson, S. Repond, A. T. Doyle, A.M. Khan, R. Schattevoy, G. Bari, J. F. Labs, Roberto Carlin, L. S. Durkin, Ada Solano, R. Walczak, M. Adamus, S. Limentani, G. Marini, A.K. Wróblewski, A. Bamberger, F. Selonke, E. Hilger, M. Z. Wang, G.A. Blair, B.Y. Oh, C. Li, Stan Bentvelsen, S. Kartik, Eduardo Ros, R. J. Cashmore, Luis Labarga, M. Derrick, T. Tymieniecka, J. A. O'Mara, U. Kötz, Vivian O'Dell, C. O. Kim, V. K. Nadendla, R. J. Nowak, Francois Corriveau, A. Kotański, P. Morawitz, S. Kasai, A. Cassidy, M. Nakahata, U. Schneekloth, T. Neumann, S. Kitamura, Christian Nemoz, N. Dyce, C. Voci, S. Bhadra, T. Doeker, G. Jahnen, Claudia Glasman, R. Stanek, Luca Stanco, J. K. Sedgbeer, T. Bienz, G. Bruni, J.A. Zakrzewski, J. Leslie, Lucia Votano, Y. Eisenberg, B. Losowski, K. Heinloth, Giuseppe Barbagli, G. Sartorelli, R. S. Orr, P. B. Straub, M. Brkic, B. Behrens, G. D'Agostini, T. Y. Ling, G. Zech, Giovanni Abbiendi, Robert Klanner, V.A. Jamieson, B. Bednarek, R. Beuselinck, F. Zetsche, J. L. Thron, Y. Nakamitsu, Katsuo Tokushuku, R. J. Tapper, Umberto Dosselli, David Cussans, Janusz Chwastowski, E. A. De Wolf, I. H. Park, Ben Bylsma, J. Milewski, J. Krüger, H. Hartmann, Sridhara Dasu, Halina Abramowicz, Matthias Kasemann, D. Notz, S. H. Yon, T. W. Jones, Anna Goussiou, G. L. Bashindzhagyan, N. P. Zotov, R. J. Teuscher, Hideki Okuno, P.F. Ermolov, D. Monaldi, P. Cloth, R. Imlay, S. Magill, T.J. Llwellyn, E. Rulikowska-Zarȩbska, T. Y. Kim, S. Mine, C. Raine, M. Mattioli, Lothar At Bauerdick, Thomas Trefzger, B. Löhr, P. Joos, B. Foster, Yasunori Yamazaki, H. Hultschig, H. Kammerlocher, John Hart, Luisa Cifarelli, L. K. Gladilin, Neville Harnew, Nicolo Cartiglia, S. Yang, R.S. Gilmore, H.J. Grabosch, R. Ayad, I. 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Schulz, W, Selonke, F, Stiliaris, E, Tscheslog, E, Tsurugai, T, Vogel, W, Westphal, D, Wolf, G, Youngman, C, Grabosch, Hj, Leich, A, Meyer, A, Rethfeldt, C, Schlenstedt, S, Barbagli, G, Francescato, A, Nuti, M, Pelfer, P, Anzivino, G, Casaccia, R, Depasquale, S, Qian, S, Votano, L, Bamberger, A, Freidhof, A, Poser, T, Soldnerrembold, S, Theisen, G, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Forbes, Jr, Jamieson, Va, Raine, C, Saxon, Dh, Bruckmann, H, Gloth, G, Holm, U, Kammerlocher, H, Krebs, B, Neumann, T, Wick, K, Furtjes, A, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Terron, J, Zetsche, F, Bacon, Tc, Beuselinck, R, Butterworth, I, Gallo, E, Harris, Vl, Miller, Db, Prinias, A, Sedgbeer, Jk, Vorvolakos, A, Whitfield, A, Bienz, T, Kreutzmann, H, Mallik, U, Mccliment, E, Roco, M, Wang, Mz, Cloth, P, Filges, D, An, Sh, Hong, S, Kim, Co, Kim, Ty, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, 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Subjects: structure functions, deep inelastic scattering, Physics, Nuclear and High Energy Physics, Particle physics, Luminosity (scattering theory), ZEUS (particle detector), Proton, E+E-PHYSICS, Scattering, LUND MONTE-CARLO, DESY, Elementary particle, ZEUS, HERA, Deep inelastic scattering, QCD, lcsh:QC1-999, JET FRAGMENTATION, Nuclear physics, MODEL, INELASTIC MUON SCATTERING, lcsh:Physics
Abstract: This paper presents our first measurement of the F 2 structure function in neutral-current, deep inelastic scattering using the ZEUS detector at HERA, the ep colliding beam facility at DESY. The data correspond to an integrated luminosity of 24.7 nb −1 . Results are presented for data in range of Q 2 from 10 GeV 2 to 4700 GeV 2 and Bjorken x down to 3.0 × 10 −4 . The F 2 structure function increases rapidly as x decreases.
Published: 1993

18. Search for excited electrons using the ZEUS detector

Author: J. F. Martin, Fernando Barreiro, Mauro Morandin, Z. Jakubowski, J. Mollen, M. Iori, Guenter Wolf, A. Bernstein, Y. Zamora Garcia, E.N. Kuznetsov, Marcel Vreeswijk, O. Mańczak, G. F. Hartner, Nicolo Cartiglia, S. Yang, R.S. Gilmore, R. Casaccia, J. F. Labs, J. Kochocki, Rosario Nania, F. J. Sciulli, A. Freidhof, B. Lu, L. W. Hung, A. Bargende, Danuta Kisielewska, James Crittenden, A. Prinias, D. Revel, A. A. Voronin, H.F. Sadronzinski, R.J. Tapper, H.J. Grabosch, E. Rulikowska-Zarȩbska, J.A. Zakrzewski, A Furtjes, F. Gasparini, W. Koch, S.S. Wilson, T. Y. Kim, S. Mengel, C. Raine, A. Stopczyński, C. Youngman, S.H. An, J. Mainusch, J. Leslie, Tadeusz Kowalski, T. Watanabe, A. Meyer, Roberto Carlin, B. Gutjahr, A. Dannemann, D. Monaldi, M. Mattioli, G. Poelz, Eduardo Ros, R. J. Cashmore, D. Schramm, C. A. Heusch, Lothar At Bauerdick, Lucia Votano, C. Rethfeldt, W. Schott, Cd Catterall, S. Nagayama, A. Montag, M. Kückes, J. Bulmahn, Luis Labarga, F. W. Bullock, E. Lohrmann, F. Ikraiam, M. Derrick, F. Arzarello, H. Kreutzmann, J. Del Peso, T. Tymieniecka, Mariusz Flasiński, L.E. Sinclair, Marco Schioppa, P. G. Pelfer, S.J.P. Smith, A. Byrne, F.S. Chlebana, K.M. Furutani, K. U. Pösnecker, U. Kötz, B. Hubbard, M.B. Crombie, R. Seidlein, K. Wick, A. Mass, Q. Lin, S. Kartik, Thomas Trefzger, W. Schulz, A. Shapira, Vivian O'Dell, Aharon Levy, T.J. Llewellyn, J. N. Lim, C. O. Kim, J. Ciborowski, R. Ullmann, R. Yoshida, S. Nickel, B.D. Burow, D. B. Miller, T. Kȩdzierski, R. Gläser, V. K. Nadendla, R. J. Nowak, Francois Corriveau, J. M. Pawlak, M. Dardo, J. Gajewski, C. Coldewey, B. Krebs, H.G.J.M. Tiecke, F. Benard, K. Muchorowski, Giuseppe Iacobucci, K. Prytz, D. Lüke, B. Löhr, Giuseppe Levi, I. Ali, R. Wedemeyer, G. Jahnen, Claudia Glasman, P. Joos, P. Giusti, D. Zer-Zion, M. Basile, B. Foster, J.-L. Schneider, W. Vogel, H. Brückmann, R. Stanek, Helen F Heath, Wr Frisken, M. H. Suh, G. Drews, J. A. Parsons, T. Massam, Luisa Cifarelli, L. K. Gladilin, Neville Harnew, J. Biltzinger, J.K. Mayer, W. Hain, P. Luffman, Luca Stanco, P. Göttlicher, A. Kotański, P. Morawitz, I. Fleck, D. Shaw, H. Hultschig, I. H. Park, J. K. Sedgbeer, K. Eskreys, H. Kammerlocher, E. Barberis, Tobias M. Haas, John Hart, S. Kasai, J. F. de Trocóniz, Ben Bylsma, J. Milewski, J. Krüger, U. Mallik, T. Khatri, J.W. Mitchell, T. Poser, T.P. Shah, D. Haun, T. Bienz, G. Bruni, D. H. Saxon, Greg P Heath, L. Zawiejski, Roberto Cirio, P. de Jong, B. Lisowski, R.C.E. Devenish, J.B. Lane, J. Zaja̧c, G. Laurenti, H. Hartmann, Rr Rau, B. Nizioł, A. Contin, L. Köpke, L. Bellagamba, A. Eskreys, M. Rohde, J. Nash, M.A.J. Botje, K. Jeleń, I. Butterworth, Douglas Gingrich, B. Musgrave, S. K. Park, A.H. Walenta, F. Palmonari, Amedeo Staiano, M. St.Laurent, F. Selonke, E. Hilger, Y. Iga, H. Müsch, E. Paul, Ulf Behrens, Federico Cindolo, M. Krzyżanowski, H. Kowalski, Sridhara Dasu, F. Ciralli, A. Cassidy, B.Y. Oh, M. Nakahata, Halina Abramowicz, L. Hagge, Y. Eisenberg, J. Whitmore, T. Ishii, C. Li, K. Heinloth, Giuseppe Barbagli, N. Dyce, R. Meijer Drees, C.J.S. Morgado, C. Voci, S. Bhadra, C. Fordham, Michele Arneodo, N.C. Roocroft, G. Castellini, U. Schneekloth, T. Neumann, T. Barillari, C. Memoz, Silvia Maselli, M. Momayezi, M. Zachara, T. Doeker, S. Kramarczyk, Ta Romanowski, Hiroshi G. Okuno, F. F. Wilson, S. Kitamura, M. Chiarini, G. Sartorelli, R. Timellini, A. Dake, N. H. Brook, V. L. Harris, Jonathan Butterworth, S. Yamada, L. S. Durkin, Ada Solano, P.M. Patel, A. A. Savin, R. Walczak, M. Adamus, G. Marini, A.K. Wróblewski, A. Bamberger, L. Suszycki, S. Limentani, R. R. McNeil, K. Charchuła, W.N. Murray, G. Anzivino, A. Bruni, A. Zichichi, Matthias Kasemann, M. Löwe, M. Nakao, P. Borzemski, D. Notz, Samuel Silverstein, G.A. Blair, M. Brkic, S. H. Yon, M. Lancaster, D. Krakauer, T. W. Jones, Anna Goussiou, D.D. Reeder, G. D'Agostini, B. Diekmann, Stan Bentvelsen, G. L. Bashindzhagyan, N. P. Zotov, W. Kröger, R. J. Teuscher, T. Y. 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Gialas, I, Parsons, Ja, Ritz, S, Sciulli, F, Straub, Pb, Wai, L, Yang, S, Chwastowski, J, Dwurazny, A, Eskreys, A, Jakubowski, Z, Niziol, B, Piotrzkowski, K, Zachara, M, Zawiejski, L, Bednarek, B, Borzemski, P, Eskreys, K, Jelen, K, Kisielewska, D, Kowalski, T, Rulikowskazarebska, E, Suszycki, L, Zajac, J, Kedzierski, T, Kotanski, A, Przybycien, M, Bauerdick, Lat, Behrens, U, Bienlein, Jk, Bottcher, S, Coldewey, C, Dannemann, A, Drews, G, Erhard, P, Flasinski, M, Fleck, I, Glaser, R, Gottlicher, P, Gutjahr, B, Haas, T, Hagge, L, Hain, W, Hasell, D, Hultschig, H, Jahnen, G, Joos, P, Kasemann, M, Klanner, R, Koch, W, Kopke, L, Kotz, U, Kowalski, H, Kruger, J, Labs, J, Ladage, A, Lohr, B, Lowe, M, Luke, D, Mainusch, J, Manczak, O, Momayezi, M, Ng, Jst, Nickel, S, Notz, D, Posnecker, Ku, Rohde, M, Roldan, J, Ros, E, Schneekloth, U, Schroeder, J, Schulz, W, Selonke, F, Stiliaris, E, Tscheslog, E, Tsurugai, T, Vogel, W, Wolf, G, Youngman, C, Grabosch, Hj, Leich, A, Meyer, A, Rethfeldt, C, Schlenstedt, S, Barbagli, G, Francescato, A, Nuti, M, Pelfer, P, Anzivino, G, Casaccia, R, Depasquale, S, Qian, S, Votano, L, Bamberger, A, Freidhof, A, Kroger, W, Poser, T, Soldnerrembold, S, Theisen, G, Trefzger, T, Brook, Nh, Bussey, Pj, Doyle, At, Forbes, Jr, Jamieson, Va, Raine, C, Saxon, Dh, Bruckmann, H, Gloth, G, Holm, U, Kammerlocher, H, Krebs, B, Neumann, T, Wick, K, Furtjes, A, Lohrmann, E, Milewski, J, Nakahata, M, Pavel, N, Poelz, G, Schott, W, Terron, J, Zetsche, F, Bacon, Tc, Beuselinck, R, Butterworth, I, Gallo, E, Harris, Vl, Miller, Db, Prinias, A, Sedgbeer, Jk, Vorvolakos, A, Whitfield, A, Bienz, T, Kreutzmann, H, Mallik, U, Mccliment, E, Roco, M, Wang, Mz, Cloth, P, Filges, D, An, Sh, Hong, Sm, Kim, Co, Kim, Ty, Nam, Sw, Park, Sk, Suh, Mh, Yon, Sh, Imlay, R, Kartik, S, Kim, Hj, Mcneil, Rr, Metcalf, W, Nadendla, Vk, Barreiro, F, Cases, G, Hervas, L, Labarga, L, Delpeso, J, Detroconiz, Jf, Ikraiam, F, Mayer, Jk, Smith, Gr, Corriveau, F, Gilkinson, Dj, Hanna, D, Hartmann, J, Hung, Lw, Lim, Jn, Drees, Rm, Mitchell, Jw, Patel, Pm, Sinclair, Le, Stairs, Dg, Stlaurent, M, Ullmann, R, Bashindzhagyan, Gl, Ermolov, Pf, Gladilin, Lk, Golubkov, Ya, Kuzmin, Va, Kuznetsov, En, Savin, Aa, Voronin, Ag, Zotov, Np, Bentvelsen, S, Botje, M, Dake, A, Engelen, J, Dejong, P, Dekamps, M, Kooijman, P, Kruse, A, Vanderlugt, H, Odell, V, Tenner, A, Tiecke, H, Uijterwaal, H, Vreeswijk, M, Wiggers, L, Dewolf, E, Vanwoudenberg, R, Bylsma, B, Durkin, L, Honscheid, K, Li, C, Ling, Ty, Mclean, Kw, Murray, Wn, Park, Ih, Romanowski, Ta, Seidlein, R, Blair, Ga, Byrne, A, Cashmore, Rj, Coopersarkar, Am, Devenish, Rce, Gingrich, Dm, Hallambaker, Pm, Harnew, N, Khatri, T, Long, Kr, Luffman, P, Mcarthur, I, Morawitz, P, Nash, J, Smith, Sjp, Roocroft, Nc, Wilson, Ff, Abbiendi, G, Brugnera, R, Carlin, R, Dalcorso, F, Degiorgi, M, Dosselli, U, Gasparini, F, Limentani, S, Morandin, M, Posocco, M, Stanco, L, Stroili, R, Voci, C, Butterworth, Jm, Bulmahn, J, Feild, G, Oh, By, Whitmore, J, Contino, U, Dagostini, G, Guida, M, Iori, M, Mari, Stefano Maria, Marini, G, Mattioli, M, Nigro, A, Hart, Jc, Mccubbin, Na, Prytz, K, Shah, Tp, Short, Tl, Barberis, E, Cartiglia, N, Heusch, C, Hubbard, B, Leslie, J, Lockman, W, Oshaughnessy, K, Sadrozinski, Hf, Seiden, A, Zerzion, D, Badura, E, Biltzinger, J, Seifert, Rj, Walenta, Ah, Zech, G, Dagan, S, Levy, A, Hasegawa, T, Hazumi, M, Ishii, T, Kasai, S, Kuze, M, Nagasawa, Y, Nakao, M, Okuno, H, Tokushuku, K, Watanabe, T, Yamada, S, Chiba, M, Hamatsu, R, Hirose, T, Kitamura, S, Nagayama, S, Nakamitsu, Y, Cirio, R, Costa, M, Ferrero, Mi, Lamberti, L, Maselli, S, Peroni, C, Solano, A, Staiano, A, Dardo, M, Bailey, Dc, Bandyopadhyay, D, Benard, F, Bhadra, S, Brkic, M, Burow, Bd, Chlebana, F, Crombie, Mb, Hartner, Gf, Levman, Gm, Martin, Jf, Orr, R, Prentice, Jd, Sampson, Cr, Stairs, Gg, Teuscher, Rj, Yoon, T, Bullock, Fw, Catterall, Cd, Giddings, Jc, Jones, Tw, Khan, Am, Lane, Jb, Makkar, Pl, Shaw, D, Shulman, J, Blankenship, K, Kochocki, J, Lu, B, Mo, Lw, Charchula, K, Ciborowski, J, Gajewski, J, Grzelak, G, Kasprzak, M, Krzyzanowski, M, Muchorowski, K, Nowak, Rj, Pawlak, Jm, Stopczynski, A, Tymieniecka, T, Walczak, R, Wroblewski, Ak, Zakrzewski, Ja, Zarnecki, Af, Adamus, M, Abramowicz, H, Eisenberg, Y, Glasman, C, Karshon, U, Montag, A, Revel, D, Shapira, A, Foudas, C, Fordham, C, Loveless, Rj, Goussiou, A, Ali, I, Behrens, B, Dasu, S, Reeder, Dd, Smith, Wh, Silverstein, S, Frisken, Wr, Furutani, Km, Iga, Y, and RI De Pasquale Salvatore/B 9165 2008 Lancaster Mark/C 1693 2008 Doyle Anthony/C 5889 2009 Gladilin Leonid/B 5226 2011 Golubkov Yury/E 1643, 2012
Subjects: Nuclear and High Energy Physics, Particle physics, LUND MONTE-CARLO, LEPTON PRODUCTION, Astrophysics::High Energy Astrophysical Phenomena, Electron, excited electrons, electron proton collider, JET FRAGMENTATION, law.invention, MUONS, Nuclear physics, LIMITS, ZEUS, CENTRAL TRACKING DETECTOR, E+E-PHYSICS, Z0 DECAY, GAMMA-GAMMA%22">E+E-->GAMMA-GAMMA, CALORIMETER, law, Collider, Nuclear Experiment, Physics, Muon, ZEUS (particle detector), Luminosity (scattering theory), Compton scattering, HERA, Excited state, High Energy Physics::Experiment
Abstract: This paper reports a search for excited electrons at the HERA electron-proton collider. In a sample corresponding to an integrated luminosity of 26 nb−, no evidence was found for any resonant state decaying into e−γ, νW− or e−Z0. Limits on the coupling strength of an excited electron have been determined for masses between 45 and 225 GeV. This study also reports the observation of the wide-angle eγ Compton scattering process.
Published: 1993

19. A plunger with inchworm positioning and interferometer distance readout for recoil-distance measurements

Author: N.A. Van Zwol, G. van Middelkoop, M.A.J. Botje, A. J. Rutten, and A. Holthuizen
Subjects: Plunger, Physics, Range (particle radiation), Interferometry, Recoil, Distance measurement, Optics, business.industry, Excited state, General Medicine, business
Abstract: A plunger system for measuring mean lives τ and g-factors of excited nuclear states with τ⋍1−100 ps is described. The plunger distance is adjustable over a range of 25 mm by a fully piezo-electrically controlled “inchworm”. The actual distance measurement is performed by a laser-interferometer system and by measuring the plunger capacity. Test experiments on the mean lives of 21Ne(521+) and 25Mg(321+) show that the performance of the system is satisfactory.
Published: 1981
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20. D* production in deep inelastic scattering at HERA

Author: J.N. Lim, G. Howell, D. Sideris, L.K. Gladilin, G. Castellini, P. Borzemski, Rosario Nania, Sung Keun Park, F. Dal Corso, A.S. Wilson, W. Verkerke, L. Cifarelli, E. Rulikowska-Zarȩbska, D. B. Miller, H.-P. Jakob, R. L. Saunders, Tachishige Hirose, C. Glasman, M. Kuze, L. Lamberti, M. Basile, W.F. Badgett, A. Pellegrino, T. Haas, F. Anselmo, T. Dubbs, C. Rembser, Katsuo Tokushuku, Umberto Dosselli, K. Ohrenberg, T. Yamashita, H. Zhang, S. Dagan, R. Brugnera, V. A. Kuzmin, M. Khakzad, D. C. Bailey, M. Nakao, C. Youngman, Janusz Chwastowski, M. Inuzuka, N. A. McCubbin, J. F. Martin, A. Nigro, W. H. Smith, Yu. A. Golubkov, A. Bornheim, T. Matsushita, P. Giusti, Roberto Sacchi, S. Yamada, G.P. Heath, Gm Levman, D. S. Waters, R. Stroili, E. A. De Wolf, G. Drews, W. Hain, Y. Zamora Garcia, J. Bulmahn, T. Voß, M. Posocco, C. L. Kim, D.S. Bailey, B. Löhr, A.S. Proskuryakov, K. Yamauchi, H. Kowalski, J. R. Tickner, M. Lancaster, J.T. Wu, Danuta Kisielewska, T. Massam, A. Ochs, Aharon Levy, F.S. Chlebana, Peter Bussey, A.F. Whitfield, S. Mattingly, P. Cloth, M. Eckert, N.A. Korotkova, L. Bellagamba, S. Nam, Cristiana Peroni, R. J. Cashmore, A. Zichichi, Matthias Kasemann, R. Yoshida, R. Ayad, N. Pavel, B.D. Burow, D.G. Roff, R. Pawlak, J.I. Fleck, Michele Arneodo, P. Nylander, K. K. Joo, J.A. Parsons, H. Salehi, W.N. Cottingham, J. Zaja̧c, J. Hartmann, D. Notz, J. Shulman, Laurel E. Sinclair, B. Lu, G. Cara Romeo, O. Mańczak, P. Markun, M. Derrick, C. Voci, G. F. Hartner, Juan Terron, M. Kasprzak, I. Suzuki, R. Waugh, M. St-Laurent, William S. Lockman, U. Holm, R. Stanek, G. Briskin, P.M. Kooijman, T. W. Jones, J. M. Pawlak, C. M. Ginsburg, L. Suszycki, S. Kitamura, G. L. Bashindzhagyan, W.B. Schmidke, R. J. Teuscher, D.C. Williams, C. Coldewey, A. H. Walenta, T. Tymieniecka, U. Kötz, S. Ritz, A. Garfagnini, A. Caldwell, R. Cross, Z. Duliński, I.H. Park, N. Cartiglia, Giuseppe Levi, J. Gilmore, K. Muchorowski, N. Gendner, D. Kçira, Ian Brock, J.D. McFall, K. Jelen, Ricardo Graciani, J.K. Edmonds, A.I. van Sighem, J.T. Bromley, Krzysztof Piotrzkowski, F. Palmonari, Joanne Cole, P.F. Ermolov, W.R. Frisken, Richard Hall-Wilton, K. Wick, Marco Schioppa, S. Magill, N.C. Brummer, P. G. Pelfer, J. Breitweg, R. Wedemeyer, G. Cases, G. Abbiendi, S. Wölfle, Costas Foudas, L.W. Mo, Amedeo Staiano, Yuji Yamazaki, E. Strickland, Silvia Maselli, R. Loveless, M. Pfeiffer, Amanda Cooper-Sarkar, D. Acosta, M. Riveline, T. Fusayasu, D. Filges, R. J. Nowak, Luca Stanco, Lev Khein, T.P. Shah, Mark Sutton, S. M. Wang, D. H. Saxon, S. Sampson, R. S. Orr, J. Stamm, Vincenzo Monaco, B. Foster, F. Sciulli, A. Quadt, S.A. Zotkin, U. Schneekloth, P. Göttlicher, M.C.K. Mattingly, L. Lindemann, J. A. Zakrzewski, S. Kananov, J. K. Sedgbeer, C.R. Sampson, A. Kotański, G. Bruni, D. Horstmann, N. H. Brook, V. L. Harris, Kenneth Long, J. Labs, I. Butterworth, L. S. Durkin, L.A.T. Bauerdick, Y. Iga, R. Hamatsu, A. Pesci, Roberto Carlin, M. Rohde, J. Y. Kim, R.J. Tapper, Jeffrey T. Rahn, J.R. Okrasiński, Pietro Antonioli, Neville Harnew, G. Bari, J. Repond, O. Ruske, Ben Bylsma, J. Milewski, J. Puga, D.S. Hanna, M. Van Hook, B. Bednarek, H. Hartmann, D. Chapin, Thomas Trefzger, K.F. Johnson, A. Seiden, T. Doeker, Jose M Hernandez, K. Nagano, M. Roco, Giovanni Maccarrone, D. Hochman, R. Deffner, W. Liu, S. Schlenstedt, M. Brkic, M. Adamus, Sridhara Dasu, F. Zetsche, J.H. Vossebeld, M. Raso, A. Eskreys, A. T. Doyle, Ta Romanowski, R. Ullmann, V.A. Noyes, G. Marini, Ada Solano, J. Ciborowski, A. Kruse, Wolfram Dietrich Zeuner, A.K. Wróblewski, A. Bamberger, S Campbell-Robson, Halina Abramowicz, L. Labarga, T. Monteiro, K. Coböken, F. Selonke, B. Surrow, Marcella Capua, S. Limentani, D. Hasell, O. Yu. Lukina, E. Hilger, G. D'Agostini, B. A. Dolgoshein, Jongmin Lee, F. Pelucchi, M. Dardo, I. T. Lim, James Crittenden, S. Bhadra, Jonathan Butterworth, T. Y. Ling, B.Y. Oh, Roman Walczak, A. Polini, U. Fricke, M. Grothe, C. A. Heusch, C. Amelung, S. De Pasquale, L. Heinz, E. Lohrmann, H.E. Blaikley, W. Schott, Cd Catterall, A. Meyer-Larsen, A. Bertolin, J.J. Engelen, Robert Klanner, A. Vaiciulis, Leszek Adamczyk, Anselmo Margotti, L.W. Wiggers, S. Polenz, J. F. de Trocóniz, L. Zawiejski, Roberto Cirio, Y. Eisenberg, D.J. Gilkinson, Guillaume Garcia, D.D. Reeder, J. P. Fernandez, M. Wodarczyk, I. A. Korzhavina, D. Westphal, H. Park, U. Karshon, K. Heinloth, Giuseppe Barbagli, Luis Hervas, J. Roldán, D. Boscherini, P. B. Kaziewicz, W.N. Murray, J.S.T. Ng, H. Uijterwaal, H.G.J.M. Tiecke, G. Sartorelli, M. Przybycien, J.B. Lane, Gy. Wolf, A.A. Savin, A. Contin, L.W. Hung, Lucia Votano, C. Nath, M. Zachara, R.C.E. Devenish, Q. Zhu, G. Laurenti, L. Iannotti, A. Prinias, Elisabetta Gallo, W. Koch, H. Beier, Tadeusz Kowalski, G. Poelz, Lutz Feld, S.H. An, M. Y. Pac, M. C. Petrucci, T. Tsurugai, P.B. Straub, L. M. Shcheglova, Giuseppe Iacobucci, M.A.J. Botje, I. Bohnet, Tomohiro Abe, Z. Jing, Ulf Behrens, Federico Cindolo, Miriam Lucio Martinez, S. B. Lee, T. Ishii, B. Musgrave, D.G. Stairs, K. Desler, Hartmut Sadrozinski, R.L. Talaga, S. Eisenhardt, J.J. Ryan, B. H. Y. Hung, J. K. Bienlein, Mariusz Przybycien, M. Corradi, C.H. Bokel, H.J. Grabosch, O. Deppe, M.E. Hayes, O. Schwarzer, Helen F Heath, U. Wollmer, I. Gialas, Marco Costa, D. Simmons, John Hart, M.I. Ferrero, D. Mikunas, R. G. Feild, D. Krakauer, A. Meyer, K. Umemori, A. Bruni, M. Löwe, Marcel Vreeswijk, Enrico Tassi, J. J. Whitmore, Giancarlo Susinno, Vladimir Bashkirov, F. Corriveau, G. Grzelak, T. C. Bacon, J. Del Peso, K. Homma, E. Barberis, C.-P. Fagerstroem, A. N. Solomin, U. Mallik, A.V. Shumilin, J. Große-Knetter, Fernando Barreiro, Martin Utley, Mauro Morandin, Z. Jakubowski, U. F. Katz, D. Piccioni, A.F. Ż.arnecki, D. Revel, E. Paul, A. Stifutkin, and Zeus (IHEF, IoP, FNWI)
Subjects: COLLISIONS, Nuclear and High Energy Physics, Particle physics, Proton, FOS: Physical sciences, PROTON, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, ZEUS CALORIMETER, High Energy Physics - Experiment (hep-ex), Positron, 0103 physical sciences, Charm (quantum number), QCD ANALYSIS, 010306 general physics, Nuclear Experiment, Physics, Quantum chromodynamics, ZEUS (particle detector), CONSTRUCTION, 010308 nuclear & particles physics, ZEUS, CENTRAL TRACKING DETECTOR, PARTON DISTRIBUTIONS, INTRINSIC CHARM, EP SCATTERING, ELECTROPRODUCTION, Structure function, HERA, Deep inelastic scattering, High Energy Physics::Experiment
Abstract: This paper presents measurements of D^{*\pm} production in deep inelastic scattering from collisions between 27.5 GeV positrons and 820 GeV protons. The data have been taken with the ZEUS detector at HERA. The decay channel $D^{*+}\to (D^0 \to K^- \pi^+) \pi^+ $ (+ c.c.) has been used in the study. The $e^+p$ cross section for inclusive D^{*\pm} production with $5, Comment: 17 pages including 4 figures

21. Measurement of elastic Υ photoproduction at HERA

Author: A. Bruni, F. Selonke, E. Hilger, R. Galea, L. M. Shcheglova, Enrico Tassi, J. J. Whitmore, F. Pelucchi, Michele Arneodo, Giancarlo Susinno, Giuseppe Iacobucci, A. Meyer, K. Umemori, G.J. McCance, P. Borzemski, H. Schnurbusch, B.Y. Oh, R.L. Talaga, S. W. Lee, Rosario Nania, Sung Keun Park, J.T. Wu, R. Loveless, Mariusz Przybycien, M. Corradi, W. S. Toothacker, C.H. Bokel, T. Fusayasu, A. Ochs, H.J. Grabosch, H. Zhang, J. F. Martin, C. Amelung, L. Suszycki, H.-P. Jakob, L. Lamberti, I. Bohnet, Jeffrey T. Rahn, Tomohiro Abe, A. Kotański, Antonino Zichichi, D. Epperson, J.I. Fleck, R. Graciani, L.A.T. Bauerdick, J. Zaja̧c, R. L. Saunders, V.A. Noyes, J. Del Peso, U. Wollmer, Z. Jing, J.R. Okrasiński, I. Gialas, C. A. Heusch, K. Coböken, Y. Zamora Garcia, Katsuo Tokushuku, B. Mellado, D. Simmons, Inkyu Park, Leszek Adamczyk, S. J. Hong, John Hart, N. Pavel, J.J. Ryan, Umberto Dosselli, R. Brugnera, Thomas Trefzger, K.F. Johnson, P. Cloth, S. Eisenhardt, Janusz Chwastowski, J.K. Edmonds, A.I. van Sighem, M. Y. Pac, K. Homma, E. Lohrmann, E. A. De Wolf, J. R. Tickner, Danuta Kisielewska, J. Ciborowski, M.I. Ferrero, Ada Solano, D. Mikunas, M.C.K. Mattingly, L. S. Durkin, R. Hamatsu, J. Puga, Els Koffeman, Lucia Votano, C. Nath, Yuji Yamazaki, V. A. Kuzmin, D. Krakauer, K. Nagano, W. H. Smith, G. Briskin, P.M. Kooijman, T. Massam, M.A.J. Botje, N. Cartiglia, W.N. Cottingham, Mário Costa, James Crittenden, H.G.J.M. Tiecke, S. Limentani, D. C. Bailey, C. Youngman, Dong-Chul Son, K. Wick, G. Abbiendi, R. Stanek, R. Deffner, Juan Terron, Vladimir Bashkirov, G.F. Hartner, M. Riveline, Anna Mastroberardino, I. O. Skillicorn, Fernando Barreiro, Andrea Contin, H.E. Blaikley, L.K. Gladilin, Mauro Morandin, M. Adamus, N. Tuning, M. C. Petrucci, F. Corriveau, R. Yoshida, I. T. Lim, M. Grothe, F. Sciulli, H.F. Heath, L. Heinz, M. Dardo, T. Tsurugai, B.D. Burow, G. Grzelak, G. Marini, S. Bhadra, T. Monteiro, J.A. Parsons, G. Cara Romeo, L. Lindemann, J. A. Zakrzewski, Wolfram Dietrich Zeuner, A.K. Wróblewski, A. Bamberger, A. Quadt, M. E. Hayes, H. Lim, Y. Eisenberg, A. Sabetfakhri, C. Coldewey, Guillaume Garcia, H. Raach, Gm Levman, R. S. Orr, P.B. Straub, N. A. McCubbin, T. C. Bacon, D. S. Waters, U. Holm, R. Walczak, F. Palmonari, K. Heinloth, J. M. Pawlak, Jan Figiel, Marcella Capua, Kenneth Long, G. Bari, J. Repond, K. Desler, A. Polini, S. De Pasquale, S. Wölfle, R.J. Tapper, M. Milite, Giuseppe Barbagli, H. Wieber, J. Roldán, D.S. Hanna, T. Yamashita, M. St-Laurent, F. Dal Corso, H. Kowalski, Cristiana Peroni, R. J. Cashmore, B. Bednarek, Amedeo Staiano, U. F. Katz, A. Garfagnini, R. Wichmann, Abhay Deshpande, A. M. Cooper-Sarkar, S. Dagan, S. Mattingly, D. Piccioni, Matthias Kasemann, D.C. Williams, M. Khakzad, K. Klimek, K. Yamauchi, D.G. Roff, J. K. Bienlein, M. Pfeiffer, Ulf Behrens, Federico Cindolo, M. Derrick, T. Tymieniecka, F. Zetsche, Krzysztof Piotrzkowski, A.S. Proskuryakov, Yu. A. Golubkov, Giovanni Maccarrone, D. Hochman, Ta Romanowski, M. Wing, S. K. Dhawan, D. Filges, S. Schlenstedt, P. J. Bussey, R. Pawlak, W.F. Badgett, U. Kötz, P.R.B. Saull, J.B. Lane, Gy. Wolf, H. Salehi, G. Sartorelli, M. Przybycien, J.T. Bromley, D. Notz, G. Howell, M. Posocco, Joanne Cole, S. B. Lee, N. Gendner, C.-P. Fagerstroem, O. Deppe, J. Breitweg, Marco Schioppa, S. Magill, N.C. Brummer, Richard Hall-Wilton, B. Löhr, S. Stonjek, A.A. Savin, P. G. Pelfer, A. N. Solomin, U. Mallik, Jonathan Butterworth, R. Waugh, Aleksander Filip Żarnecki, Silvia Maselli, M. Inuzuka, S. Yamada, E. Rulikowska-Zarȩbska, S. Kitamura, R. J. Nowak, D. Acosta, T. Ishii, P. Nylander, K. K. Joo, U. Fricke, B. Musgrave, D.S. Bailey, B. Smalska, D.G. Stairs, D.D. Reeder, Roberto Carlin, P. Markun, D. Chapin, Vincenzo Monaco, Giuseppe Levi, N. H. Brook, M. Eckert, N.A. Korotkova, L. Bellagamba, M. Wodarczyk, J. Hartmann, A. Meyer-Larsen, Rodney Walker, O. Schwarzer, Z. Duliński, J.D. McFall, C. Voci, M. Rohde, A. Bertolin, R. Kerger, K. Jelen, O. Ruske, W.R. Frisken, T. W. Jones, G. L. Bashindzhagyan, C. M. Ginsburg, D. Sideris, S. Ritz, Costas Foudas, J. F. de Trocóniz, L. Zawiejski, Roberto Cirio, D. Hasell, G. D'Agostini, Tachishige Hirose, D. B. Miller, S. Sampson, A. Caldwell, R. Cross, T. Y. Ling, U. Schneekloth, W.B. Schmidke, A. Bornheim, M. Basile, J. Gilmore, I. Butterworth, A. Pellegrino, T. Haas, F. Anselmo, Robert Klanner, Y. Iga, V. W. Hughes, Alexander Kappes, A. Vaiciulis, T. Nishimura, Claudia Glasman, A. M. Czermak, E. Paul, J. M. Hernandez, T. Matsushita, G.P. Heath, A. Stifutkin, F. Goebel, H. F.W. Sadrozinski, Luca Stanco, Lev Khein, R. Stroili, N. Coppola, S. Kananov, J. K. Sedgbeer, O. Yu. Lukina, G. Bruni, B. Surrow, A. Nigro, Jongmin Lee, C. L. Kim, B. Foster, P.F. Ermolov, J. Y. Kim, Pietro Antonioli, Luisa Cifarelli, Neville Harnew, K. Hebbel, Cd Catterall, S.A. Zotkin, A. Pesci, Ben Bylsma, J. Milewski, M. Bukowy, H. Hartmann, W. Liu, Sridhara Dasu, S Campbell-Robson, Halina Abramowicz, E. A. Heaphy, A. Seiden, I. Suzuki, J.H. Vossebeld, M. Raso, A. Eskreys, A. T. Doyle, L. Labarga, Wouter Verkerke, B. A. Dolgoshein, Marta Ruspa, D. Kçira, Ian Brock, E. Strickland, T.P. Shah, Mark Sutton, S. M. Wang, D. H. Saxon, D. Westphal, U. Karshon, P. Göttlicher, Luis Hervas, D. Boscherini, M. I. Martínez, Roberto Sacchi, G. Castellini, W.N. Murray, M. Kuze, Aharon Levy, Laurel E. Sinclair, A. Prinias, Elisabetta Gallo, P. Giusti, W. Koch, S. Polenz, H. Beier, G. Drews, J. Große-Knetter, W. Hain, Tadeusz Kowalski, G. Poelz, J. P. Fernandez, I. A. Korzhavina, R.C.E. Devenish, Q. Zhu, S. W. Nam, N. Macdonald, J.J. Engelen, G. Laurenti, Anselmo Margotti, L.W. Wiggers, and L. Iannotti
Subjects: Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Meson production, Meson, 010308 nuclear & particles physics, Branching fraction, Nuclear Theory, Perturbative QCD, Particle accelerator, HERA, 01 natural sciences, law.invention, Nuclear physics, law, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract: The photoproduction reaction γp → μ+ μ-p has been studied in ep interactions using the ZEUS detector at HERA. The data sample corresponds to an integrated luminosity of 43.2pb-1. The Υ meson has been observed in photoproduction for the first time. The sum of the products of the elastic Υ(1S), Υ(2S),Υ(3S) photoproduction cross sections with their respective branching ratios is determined to be 13.3 ± 6.0(stat.)-2.3+2.7(syst.) pb at a mean photon-proton centre of mass energy of 120 GeV. The cross section is above the prediction of a perturbative QCD model. © 1998 Elsevier Science B.V. All rights reserved.

22. Diffractive dijet cross sections in photoproduction at HERA

Author: Ada Solano, L. Lamberti, B. Surrow, Jongmin Lee, S. Limentani, Thomas Trefzger, K.F. Johnson, M. Kuze, S. Polenz, Vladimir Bashkirov, I. T. Lim, S. Bhadra, J. Bulmahn, P. Giusti, K. Hebbel, J. F. Martin, J. P. Fernandez, I. O. Skillicorn, Andrea Contin, A. Nigro, G. Drews, W. N. Murray, J. Große-Knetter, J. A. Parsons, C. L. Kim, W. Schott, Cd Catterall, W. Hain, Y. Zamora Garcia, A. Ochs, I. A. Korzhavina, T. Monteiro, H.-P. Jakob, R. L. Saunders, S. Sampson, R. Cross, G. Grzelak, T. C. Bacon, C.-P. Fagerstroem, A. N. Solomin, A. Prinias, Elisabetta Gallo, Costas Foudas, Marcella Capua, R. S. Orr, P. B. Straub, Kenneth Long, R. Yoshida, B.D. Burow, Francois Corriveau, Hartmut Sadrozinski, W. Koch, H.G.J.M. Tiecke, U. Mallik, Greg P Heath, Marco Schioppa, N.C. Brummer, J. Gilmore, R. Brugnera, F. Palmonari, A. Kotański, L.A.T. Bauerdick, S. De Pasquale, N. Coppola, B. A. Dolgoshein, G. Bari, J. M. Pawlak, S. W. Nam, N. Macdonald, Ulf Behrens, Federico Cindolo, S. Wölfle, Lucia Votano, C. Nath, O. Yu. Lukina, J.R. Okrasiński, Amedeo Staiano, J.J. Engelen, Z. Jing, D. Krakauer, M. Pfeiffer, P. G. Pelfer, H. Beier, Tadeusz Kowalski, S. A. Zotkin, A. Garfagnini, B. Bednarek, M. Inuzuka, S. Ritz, Amanda Cooper-Sarkar, D. C. Bailey, A. Sabetfakhri, C. Youngman, Jose Repond, A. Meyer, K. Umemori, Hao Zhang, D. Epperson, N. Cartiglia, D. S. Hanna, D. Filges, Yuji Yamazaki, Miriam Lucio Martinez, S. B. Lee, Anselmo Margotti, G. Poelz, A. Stifutkin, E. Rulikowska-Zarbska, J. D. McFall, L.W. Wiggers, Claudia Glasman, A. Quadt, F. Zetsche, W. S. Toothacker, R. Stanek, S. K. Dhawan, J.T. Wu, P.F. Ermolov, G. Howell, Giuseppe Levi, Gm Levman, Roberto Sacchi, M. Eckert, N.A. Korotkova, L. Bellagamba, D. Westphal, J. T. Rahn, U. Karshon, D Piccioni, S. Eisenhardt, J.B. Lane, W. H. Smith, Gy. Wolf, T. Ishii, D. S. Waters, Michele Arneodo, R. Kerger, K. Jelen, O. Ruske, Luis Hervas, D. Boscherini, Joanne Cole, B. Löhr, D. Mikunas, J.I. Fleck, L. Lindemann, J. Del Peso, J. A. Zakrzewski, L. M. Shcheglova, A. Bruni, Luca Stanco, Lev Khein, Mário Costa, H. Kowalski, Katsuo Tokushuku, R. J. Tapper, S. Kitamura, Aharon Levy, D. Hasell, Danuta Kisielewska, G. D'Agostini, R.C.E. Devenish, K. Homma, Alexander Kappes, W.R. Frisken, G. Castellini, J.S.T. Ng, S. Mattingly, L. Suszycki, G. Briskin, P.M. Kooijman, Umberto Dosselli, Q. Zhu, Jens Hartmann, Janusz Chwastowski, F. J. Sciulli, WN Cottingham, Giuseppe Iacobucci, J.K. Edmonds, A.I. van Sighem, Matthew Wing, K. Wick, Fernando Barreiro, Enrico Tassi, J. J. Whitmore, G. Abbiendi, D.D. Reeder, M. Wodarczyk, T. Y. Ling, Robert Klanner, A. Vaiciulis, U. Holm, S. Kananov, J. K. Sedgbeer, R. Pawlak, E. A. De Wolf, P. Nylander, K. K. Joo, J. R. Tickner, G. Laurenti, Y. Eisenberg, F. Dal Corso, Giancarlo Susinno, T. Massam, I. Gialas, G. Bruni, Laurel E. Sinclair, Mauro Morandin, M.A.J. Botje, Guillaume Garcia, L. W. Hung, M. Riveline, R. Walczak, U. Schneekloth, Jan Figiel, I. Bohnet, K. Heinloth, Tomohiro Abe, K. Coböken, Abhay Deshpande, P. Markun, G. F. Hartner, Roberto Carlin, W.F. Badgett, I. Butterworth, N. Tuning, K. Desler, Krzysztof Piotrzkowski, S. Magill, Giuseppe Barbagli, H. Wieber, J. Roldán, I.H. Park, A. Bornheim, Leszek Adamczyk, James Crittenden, Af Zarnecki, Y. Iga, A. Pesci, R. Wichmann, U. F. Katz, D. Chapin, R. Waugh, M. Y. Pac, A. Seiden, M.I. Ferrero, M. St-Laurent, Rodney Walker, O. Schwarzer, A. Meyer-Larsen, A. M. Czermak, Ben Bylsma, J. Milewski, G. Sartorelli, Ta Romanowski, M. Przybycien, B. Mellado, Z. Duliński, I. Suzuki, L. Iannotti, S. Yamada, A.A. Savin, D. S. Bailey, J.H. Vossebeld, M. Bukowy, M. Grothe, L. Heinz, A. Bertolin, M. C. Petrucci, K. Klimek, Giovanni Maccarrone, D. Hochman, J. Zajc, M. Raso, A. Eskreys, A. T. Doyle, S. Schlenstedt, P. J. Bussey, H. Hartmann, J. K. Bienlein, L. Labarga, T. Tsurugai, R. L. Talaga, S. Stonjek, J. F. de Trocóniz, Jonathan Butterworth, Jose M Hernandez, L. Zawiejski, Roberto Cirio, S. Dagan, C. Voci, Marta Ruspa, M. Khakzad, U. Fricke, W. Liu, V. A. Kuzinin, C. A. Heusch, C. M. Ginsburg, Yu. A. Golubkov, D. Kçira, B. Musgrave, Ian Brock, E. Lohrmann, M. Posocco, E. Paul, Sridhara Dasu, E. Strickland, Halina Abramowicz, T.P. Shah, Mark Sutton, L.K. Gladilin, S. M. Wang, D. H. Saxon, H.E. Blaikley, J. Ciborowski, R. Ullmann, T. Yamashita, P. Göttlicher, K. Yamauchi, M. Dardo, C. Coldewey, H. Raach, A. Polini, Matthias Kasemann, H. Salehi, P. Borzemski, D. Notz, M. Milite, W. Verkerke, T. W. Jones, Antonino Zichichi, G. L. Bashindzhagyan, W.B. Schmidke, R. J. Teuscher, J.J. Ryan, D.C. Williams, DG Roff, J. Stamm, B. Foster, D. Sideris, J. Y. Kim, Pietro Antonioli, D. B. Miller, Luisa Cifarelli, Neville Harnew, M. Basile, A. Pellegrino, T. Haas, F. Anselmo, V. W. Hughes, Richard Hall-Wilton, Silvia Maselli, J.T. Bromley, D. Horstmann, D. Acosta, N. H. Brook, Dg Stairs, Vincenzo Monaco, M. Rohde, R. Graciani, P. Cloth, R. Ayad, G. Cara Romeo, Tachishige Hirose, T. Matsushita, F. Goebel, R. Stroili, N. Pavel, Juan Terron, M. Kasprzak, R. Loveless, T. Fusayasu, Mariusz Przybycien, M. Corradi, C.H. Bokel, V.A. Noyes, S. J. Hong, S. Campbell-Robson, M. E. Hayes, N. A. McCubbin, H.J. Grabosch, A.S. Proskuryakov, Helen F Heath, U. Wollmer, D. Simmons, John Hart, M.C.K. Mattingly, L. S. Durkin, R. Hamatsu, J. Puga, Els Koffeman, K. Nagano, R. Deffner, M. Adamus, G. Marini, Wolfram Dietrich Zeuner, A.K. Wróblewski, A. Bamberger, Allen Caldwell, Cristiana Peroni, R. J. Cashmore, M. Derrick, T. Tymieniecka, U. Kötz, N. Gendner, O. Deppe, J. Breitweg, R. J. Nowak, F. Selonke, E. Hilger, R. Galea, F. Pelucchi, B.Y. Oh, C. Amelung, Rosario Nania, and Sung Keun Park
Subjects: Particle physics, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, Parton, 01 natural sciences, Zeus (malware), JET FRAGMENTATION, Nuclear physics, DEEP-INELASTIC SCATTERING, Pomeron, 0103 physical sciences, Rapidity, 010306 general physics, Engineering (miscellaneous), Quantum chromodynamics, Physics, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, ZEUS, LARGE RAPIDITY GAP, POMERON STRUCTURE, PARTON DISTRIBUTIONS, PERTURBATION-THEORY, HARD SCATTERING, HERA, Deep inelastic scattering, Gluon, High Energy Physics::Experiment
Abstract: Differential dijet cross sections have been measured with the ZEUS detector for photoproduction events in which the hadronic final state containing the jets is separated with respect to the outgoing proton direction by a large rapidity gap. The cross section has been measured as a function of the fraction of the photon (ϰγOBS) and pomeron (βOBS) momentum participating in the production of the dijet system. The observed ϰγOBS dependence shows evidence for the presence of a resolved- as well as a direct-photon component. The measured cross section da/dβOBS increases as βOBS increases indicating that there is a sizeable contribution to dijet production from those events in which a large fraction of the pomeron momentum participates in the hard scattering. These cross sections and the ZEUS measurements of the diffractive structure function can be described by calculations based on parton densities in the pomeron which evolve according to the QCD evolution equations and include a substantial hard momentum component of gluons in the pomeron.

23. Study of D* (2010)± production in ep collisions at HERA

Author: A. Nigro, Yasunori Yamazaki, J. Kochocki, B. Gutjahr, H. Hultschig, John Hart, L. M. Shcheglova, A. Prinias, D. Haun, E. Barberis, A. N. Solomin, U. Mallik, R. R. McNeil, K. Desler, M. Lancaster, W. Koch, F. Selonke, E. Hilger, A.F. Whitfield, S.M. Mari, J.T. Wu, K. Charchuła, Giuseppe Iacobucci, M. Krzyżanowski, W. Metcalf, H. Beier, Tadeusz Kowalski, J. Große-Knetter, A. Bruni, D. Daniels, U. Holm, B.Y. Oh, M. Löwe, Y Zhang, D.D. Reeder, B. Diekmann, M. Wodarczyk, G. Poelz, J. Mollen, J. Zaja̧c, P. B. Kaziewicz, L. Köpke, L. Lamberti, H. Uijterwaal, Lutz Feld, J. J. Whitmore, C. Li, Rosario Nania, Sung Keun Park, Nicolo Cartiglia, N. Pavel, I. Suzuki, G.R. Smith, Krzysztof Piotrzkowski, P. Bruni, Costas Foudas, J.F. Zhou, Christian Nemoz, Giancarlo Susinno, Vladimir Bashkirov, L.W. Mo, K. K. Joo, Y. Iga, Cristiana Peroni, N. Dyce, A. Meyer, G. Briskin, Mariusz Przybycien, M. Corradi, Tobias M. Haas, William S. Lockman, G. Grzelak, Matthias Kasemann, K. M. Furutani, D. Westphal, D. Notz, R. J. Cashmore, S. Nickel, M. Derrick, D. B. Miller, C. Voci, B. Surrow, S.H. An, T. Tymieniecka, M. Zachara, S. Mengel, J. Mainusch, D. Schramm, C. A. Heusch, Ada Solano, R. S. Orr, R.S. Gilmore, H.J. Grabosch, S. H. Yon, T. W. Jones, Anna Goussiou, G. L. Bashindzhagyan, N. P. Zotov, W.B. Schmidke, R. J. Teuscher, Shoichi Yamada, R.C.E. Devenish, Avto Kharchilava, W. Schott, Cd Catterall, T. C. Bacon, U. Kötz, A. Dannemann, H.G.J.M. Tiecke, F. Benard, O. Mańczak, G. F. Hartner, Roberto Carlin, Q. Zhu, I. Fleck, U. Karshon, J.B. Lane, Gy. Wolf, Rr Rau, J.A. O'Mara, Marcel Vreeswijk, S. Limentani, Kenneth Long, K. Wick, S. De Pasquale, Luis Hervas, S. Ritz, D. Boscherini, Marco Schioppa, S. Magill, J. Gajewski, B. Behrens, O. Deppe, T. Doeker, A. Caldwell, M. Roco, J.D. McFall, V. K. Nadendla, R. J. Nowak, G. Bari, G. Laurenti, J. Del Peso, P. G. Pelfer, J. Repond, Masashi Hazumi, G. Castellini, R.L. Talaga, T. Tsurugai, K. Ohrenberg, M. Van Hook, L.E. Sinclair, S.S. Wilson, P. Luffman, A. Frey, A. Bertolin, B. Bednarek, P.F. Ermolov, C. Rembser, J. Bulmahn, K.W. McLean, P.B. Straub, H. Zhang, H.-P. Jakob, A. Ladage, S. Söldner-Rembold, K. Homma, Samuel Silverstein, R. L. Saunders, J. F. Martin, M.B. Crombie, R. Seidlein, E. Lohrmann, J.S.T. Ng, M. Basile, W. H. Smith, P. Giusti, M. Brkic, E. Badura, D. Zer-Zion, J. F. de Trocóniz, L. Zawiejski, Roberto Cirio, A. Byrne, Fernando Barreiro, Robert Stanek, A. Mass, N. Wulff, P. Joos, J. Stamm, F. Zetsche, E. Stiliaris, K. Eskreys, I. Gialas, M.C.K. Mattingly, L. S. Durkin, R. Yoshida, L. Wai, J. Schroeder, R. Brugnera, R. Hamatsu, J. Puga, N. A. McCubbin, V. A. Kuzmin, D. C. Bailey, Cg Matthews, Luca Stanco, Mário Costa, D. Hasell, G. Zacek, Mauro Morandin, G. D'Agostini, M. Z. Wang, B. Foster, S. Bhadra, J. K. Sedgbeer, R. Imlay, L. W. Hung, T. Y. Ling, T. Yip, Jens Hartmann, L. Iannotti, M. De Giorgi, C. Youngman, Y. Zamora Garcia, V. D. Kobrin, T. Dubbs, Y. Nakamitsu, Katsuo Tokushuku, T.P. Shah, S. M. Wang, Ulf Behrens, F.S. Chlebana, Federico Cindolo, W. Bogusz, S. Eisenhardt, W. Hain, L. Lindemann, G. Bruni, Simon George, Umberto Dosselli, R. J. Seifert, Giovanni Abbiendi, I. H. Park, Tachishige Hirose, D. H. Saxon, T. Voß, A. Bargende, J. M. Pawlak, G.A. Blair, Leszek Adamczyk, M.I. Ferrero, M. Adamus, G. Marini, A.K. Wróblewski, A. Bamberger, Masami Chiba, D. Mikunas, Janusz Chwastowski, Klaus Kurt Desch, Luisa Cifarelli, A. M. Cooper-Sarkar, L. K. Gladilin, Neville Harnew, S. Dagan, W. Schulz, Robert Klanner, A. Vaiciulis, E. Tassi, Gm Levman, Djp Norman, I. Ali, Ben Bylsma, J. Milewski, A. Quadt, E. A. De Wolf, J. Biltzinger, H. Hartmann, D. S. Bailey, M. Khakzad, M. L. Cardy, P. Göttlicher, K. Honscheid, Yu. A. Golubkov, Y. Eisenberg, M.A.J. Botje, R. G. Feild, D. Krakauer, K. Yamauchi, H. Kowalski, M. Eckert, L. Bellagamba, M. St.Laurent, E. Paul, D.J. Gilkinson, M. Kuze, F. Dal Corso, S. Kartik, E. Rulikowska-Zarȩbska, Douglas Gingrich, Francois Corriveau, R. Walczak, H. F.W. Sadrozinski, Ricardo Graciani, K. Heinloth, Giuseppe Barbagli, L. Hagge, F. Sciulli, D. Revel, T. Hasegawa, J. Roldán, Roberto Sacchi, A. Leich, C. Glasman, B. Hubbard, C. P. Fagerstroem, F. Palmonari, A. Stifutkin, Sridhara Dasu, S. Mine, S Campbell-Robson, Halina Abramowicz, A.S. Proskuryakov, Giuseppe Levi, K. Muchorowski, W.F. Badgett, K. Jelen, T. Ishii, A. Kotański, L.A.T. Bauerdick, T.L. Short, R.J. Tapper, Amedeo Staiano, U. F. Katz, A. Freidhof, B. Lu, M. Posocco, W.R. Frisken, G. Sartorelli, Aharon Levy, T.J. Llewellyn, J. N. Lim, J. M. Hernandez, Debades Bandyopadhyay, J. K. Bienlein, R. van Woudenberg, G.P. Heath, M. de Kamps, B. Musgrave, D. Filges, R. Sinkus, S. W. Nam, R. Stroili, Antonino Zichichi, A. Bernstein, J.J. Engelen, P.M. Kooijman, U. Schneekloth, H. J. Kim, R. Wedemeyer, Giovanni Maccarrone, Thomas Trefzger, S. Schlenstedt, P. J. Bussey, A. Cassidy, I. Butterworth, M. Nakahata, D. S. Hanna, M. L. Utley, S. M. Hong, E. Gallo, Andrea Contin, James Crittenden, S. Yang, A. Kruse, Anselmo Margotti, P. Cloth, L.W. Wiggers, K. Prytz, Danuta Kisielewska, Ta Romanowski, T. Massam, E. McCliment, Y. Nagasawa, R. Ayad, H.F. Heath, G. Cases, T. Neumann, B. Löhr, A. Seiden, F. F. Wilson, J. A. Zakrzewski, M. Grothe, C.J.S. Morgado, Michele Arneodo, S. Kitamura, J. Ciborowski, M. Chiarini, J.A. Parsons, R. Ullmann, J. Shulman, Juan Terron, M. Kasprzak, Jonathan Butterworth, G. Cara Romeo, C. Fordham, A. Eskreys, Lucia Votano, A. T. Doyle, L. Labarga, Wouter Verkerke, C. Nath, H. Heßling, G. Geitz, B. Y. H. Hung, A. A. Savin, B. D. Burow, W.N. Murray, G. Anzivino, M. Nakao, P. Borzemski, G. Drews, G. Zech, M. Flasiński, R. Schattevoy, A.S. Wilson, M. Dardo, C. Coldewey, L. Suszycki, A. H. Walenta, B. A. Dolgoshein, P. Morawitz, Aleksander Filip Żarnecki, Silvia Maselli, D. Lüke, A. Polini, D. Acosta, Dg Stairs, D. Horstmann, R. Timellini, A. Dake, N. H. Brook, V. L. Harris, M. Rohde, R. Loveless, J. Labs, M. H. Suh, M. Geerts, K. Blankenship, C.R. Sampson, Jeffrey T. Rahn, P. M. Patel, V.A. Noyes, and Zeus (IHEF, IoP, FNWI)
Subjects: Nuclear and High Energy Physics, Particle physics, Meson, Proton, LUND MONTE-CARLO, photoproduction, charmed meson production, FOS: Physical sciences, 01 natural sciences, Zeus (malware), JET FRAGMENTATION, Charm quark, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), CHARM PHOTOPRODUCTION, GAMMA-P INTERACTIONS, 0103 physical sciences, Charm (quantum number), 010306 general physics, Quantum chromodynamics, Physics, ZEUS, LEADING-ORDER QCD, PARTON DISTRIBUTIONS, CROSS-SECTION, HARD SCATTERING, HEAVY QUARKS, E+E-PHYSICS, 010308 nuclear & particles physics, HERA, Gluon
Abstract: We report the first observation of charmed mesons with the ZEUS detector at HERA using the decay channel ${\rm D}^{*+}\rightarrow (\Do \rightarrow {\rm K}^-\pi^+)\pi^+$ (+ c.c.). Clear signals in the mass difference $\Delta M$=$M$(D$^*$)--$M$(D$^0)$ as well as in the $M(K\pi)$ distribution at the D$^0$ mass are found. The $ep$ cross section for inclusive \DSpm\ production with $Q^2, Comment: 19 pages, latex, 3 figures appended as uuencoded file

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23 results on '"M.A.J. Botje"'

1. xFitter 2.0.0: An Open Source QCD Fit Framework

2. HERAFitter, Open Source QCD Fit Project

3. A QCD analysis of HERA and fixed target structure function data

4. Elastic and proton-dissociative $\rho^0$ photoproduction at HERA

5. Measurement of the $t$ distribution in diffractive photoproduction at HERA

6. Measurement of the proton structure function F2 and σ at low and very low x at HERA

7. Study of charged—currentep interactions atQ 2>200 GeV2 with the ZEUS detector at HERA

8. Measurement of elasticρ 0 photoproduction at HERA

9. Measurement of the proton structure functionF 2 at lowx and lowQ 2 at HERA

10. QCDNUM: fast QCD evolution and convolution

11. ZEUS results on the measurement and phenomenology of F-2 at low x and low Q(2)

12. Observation of isolated high-E-T photons in photoproduction at HERA

13. Measurement of Multiplicity and Momentum Spectra In the Current Fragmentation Region of the Breit Frame At Hera

14. Inclusive Jet Differential Cross Sections in Photoproduction at HERA

15. Exclusive \(\rho^{0}\) production in deep inelastic electron-proton scattering at HERA

16. MEASUREMENT OF TOTAL AND PARTIAL PHOTON PROTON CROSS-SECTIONS AT 180 GEV CENTER-OF-MASS ENERGY

17. Measurement of the Proton Structure-function F2 In ep Scattering At Hera

18. Search for excited electrons using the ZEUS detector

19. A plunger with inchworm positioning and interferometer distance readout for recoil-distance measurements

20. D* production in deep inelastic scattering at HERA

21. Measurement of elastic Υ photoproduction at HERA

22. Diffractive dijet cross sections in photoproduction at HERA

23. Study of D* (2010)± production in ep collisions at HERA

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23 results on '"M.A.J. Botje"'

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