Author: "H.-U. Martyn" - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"H.-U. Martyn"' showing total 242 results

Start Over Author "H.-U. Martyn"

242 results on '"H.-U. Martyn"'

201. Evidence for the F meson

Author: W. De Boer, H. Hultschig, K. C. Moffeit, B. H. Wiik, M. Schliwa, G. Grindhammer, P. Schmüser, W. Fues, K. Sauerberg, R. Felst, R. Brandelik, D. Cords, O. Römer, D.W. Schmitz, W. Koch, H. Lierl, D. Kreinick, Gy. Wolf, Teruhiro Suda, H. U. Martyn, Y. Totsuka, A. Petersen, G. Buschhorn, H. L. Lynch, W. A. McNeely, G. Poelz, K. H. Mess, Ch. Von Gagern, S. Orito, W. Sturm, J. Ringel, H. Krehbiel, U. Kötz, W. Braunschweig, J. Ludwig, B. Gunderson, E. Gadermann, D. Notz, G. Mikenberg, R. Rüsch, H. G. Sander, R. Kotthaus, Shinya Yamada, R. Fries, A. Shapira, P. Joos, W. Wallraff, and Horst Oberlack
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Photon, Low energy, Annihilation, Meson, Electron–positron annihilation
Abstract: Inclusive η production by e+e− annihilation for cm energies between 4 and 5.2 GeV was studied. A strong η signal was observed at 4.4 GeV, produced predominantly in conjunction with a low energy photon suggestive of F F ∗ or F∗ F ∗ production. From events containing a π±, and η, and a low energy photon the F and F∗ masses were found to be 2.03 ± 0.06 and 2.14 ± 0.06 GeV, respectively.
Published: 1977

202. MESURES DE POLARISATION DE RAIES DU SPECTRE D'ATOMES DE CUIVRE EXCITÉS ET ORIENTÉS PAR IMPACT D'ÉLECTRONS, EN RELATION AVEC L'ÉNERGIE DES ÉLECTRONS ET LA PRÉSENCE D'UN CHAMP MAGNÉTIQUE

Author: G. von Oppen, H. U. Martyn, and M . Von Hartrott
Subjects: Physics, Atomic beam, Initial momentum, Mean value, General Engineering, Strong field, Champ magnetique, Resonance scattering, Electron, Atomic physics, Hyperfine structure
Abstract: The content of this review paper is very similar to two recent ones [l] [2]. Bibliographie Arnold Sommerfeld Centennial Memorial Mee- ting (a paraitre). [Il DESCOUBES (J. P.),, (t Fine structure and hyperfine [2] PEBAY-PEYROULA (J. C.), (( Spectroscopy of the excited structure of He4 and He3 ». Proceedings of the states : electron impact excitation B. Ibidem. MESURES DE POLARISATION DE RAIES DU SPECTRE D'ATOMES DE CUIVRE EXCITES ET ORIENTES PAR IMPACT D~ELECTRONS, EN RELATION AVEC L'ENERGIE DES ELECTRONS ET LA PRESENCE D'UN CHAMP MAG~~@TIQUE H. U. MARTYN, M. VON HARTROTT AND G. VON OPPEN Institut fur Kernphysik der technische Universitiit, Berlin. Resume. Les atomes de cuivre d'un faisceau atomique, pris dans l'etat fondamental 4 s ~SI/Z- ont ete excites par des electrons de quantite de mouvement initiale parallele a un champ magne- tique statique. On a mesure, pour differentes energies ( laire au faisceau d'electrons, la polarisation des raies provenant des niveaux 4 p 2Pi,2,312et 4 d 2D3/2,5/2-, en relation avec le champ magnetique statique (entre O et 80 œ). Pour la raie 3 273 A ( ~ P I ~ z Z S I ~ ~ ) , en accord avec la theorie, on n'a observe aucune polarisa- tion. En ce qui concerne la raie 3 247 A (2P3/~-2S1,2), le champ magnetique applique etait trop faible pour influer sur la polarisation, qui passe de valeurs positives aux basses energies des elec- trons a des valeurs negatives pour des energies plus elevees. Mais, comme les structures hyperfines des niveaux 4 d 2D sont plus faibles, un decouplage a ete observe, et on a mesure un accroissement prononce des raies 5 153 et 5 218 A (ZD~Z)~,Z-~PI~~ et 2D5/~-2P3/2) quand on passe d'un champ magnetique faible a un plus fort. La polarisation atteint sa valeur moyenne entre celles des champs faibles et forts a 26 œ pour la raie 5 153 A et a 11 œ pour la raie 5 218 A. On discute la polarisation de la raie 5 153 A par rapport au facteur A et a la duree de vie du niveau 2D3/2 en utilisant la formule de Breit, legerement modifiee, pour la resonance optique. Le transfert plus important du moment cinetique dans le processus d'excitation rend plus compli- ques les calculs de polarisation de la raie 5 218 A. Abstract. In an atomic beam experiment Cu atoms being in the 4 s 2Si12groundstate were excited by electrons with initial momentum parallel to a static magnetic field. Perpendicular to the electron beam the polarization of spectral lines originating in the 4 p 2P1/2.3/2and 4 d 2D312.512- ievels was measured for several energies ( (between O and 80 ce). For the 3 273 A-line (2P1/2-2Si/2) in agreement with theory no polarization was found. Concer- ning the 3 247 A-line (2P3/2-2S1/2) the applied magnetic field was to weak to influence the polari- zation, which changed from positive values at low electron energies to negative values at higher energies. But due to the smaller hfs-splitting of the 4 d 2D-levels decoupling of the hfs was observed and a pronounced increase of the polarization of the 5 153 A and 5 218 A line (2D~~2-2P112 and 2Ds12-2P312) was measured by passing from weak to stronger magnetic fields. The polariza- tien reaches the mean value between the weak and the strong field case at 26 œ for the 5 153 A-line and at 11 œ for the 5 218 A line. The polarization of the 5 153 A line is discussed in terms of the A factor and the lifetime of the 2D3/2level by use of the slightly modified Breit-formula for resonance scattering of light. Because of the greater anguiar momentum transfer in the excitation process, calculations concer- ning the polarization of the 5 218 A line are more complicated. Article published online by EDP Sciences and available at http://dx.doi.org/10.1051/jphyscol:1969131
Published: 1969

203. Einfluß eines homogenen Magnetfeldes auf die Polarisation von Fluoreszenzlinien des Cu I-Spektrums nach Elektron enstoßanregung/ Influence of a homogeneous magnetic field on the polarization of fluorescence lines of the Cu I-spectrum induced by electron bombardment

Author: G. Anger, G.v. Oppen, H.-U. Martyn, and M.V. Hartrott
Subjects: Chemistry, Analytical chemistry, General Physics and Astronomy, Physical and Theoretical Chemistry, Atomic physics, Polarization (waves), Electron bombardment, Fluorescence, Homogeneous magnetic field, Elektron, Mathematical Physics
Abstract: Using atomic beam techniques the polarization of fluorescence lines of the Cu I-spectrum was measured in dependence on magnetic field strength. The Cu-atoms were excited by electron bombardment and the magnetic field was parallel to the electron beam. Due to the decoupling of the hyperfinestructure of excited levels of the Cu I-spectrum the polarization of some observed spectral lines [3247 Å (4p 2P3/2 -4s 2S1/2); 5153 Å (4d 2D3/2 -4p 2P1/2); 5218 Å (4d2D5/2 - 4p 2P3/2)] increases with increasing magnetic field strength. These polarization measurements, which correspond to investigations on resonance scattering of light done by HEYDENBURG et al., can be used for a determination of hfs-coupling constants of excited states. The measurements on the 3247 Å-resonance line are used for a comparison with results of accurate level-crossing-experiments. Satisfactory agreement is obtained. The discussion of the polarization of the 5153 Å-line yields an A-factor of (9.6 ± 1-0) MHz and a lifetime of τ ≈1.7 · 10 -8 sec for the 4d2D3/2-level.
Published: 1970

204. Measurement of D∗± meson production and F2c in deep-inelastic scattering at HERA

Author: C. Adloff, V. Andreev, B. Andrieu, T. Anthonis, V. Arkadov, A. Astvatsatourov, A. Babaev, J. Bähr, P. Baranov, E. Barrelet, W. Bartel, P. Bate, A. Beglarian, O. Behnke, C. Beier, A. Belousov, T. Benisch, Ch. Berger, T. Berndt, J.C. Bizot, V. Boudry, W. Braunschweig, V. Brisson, H.-B. Bröker, D.P. Brown, W. Brückner, D. Bruncko, J. Bürger, F.W. Büsser, A. Bunyatyan, A. Burrage, G. Buschhorn, A.J. Campbell, J. Cao, T. Carli, S. Caron, D. Clarke, B. Clerbaux, C. Collard, J.G. Contreras, Y.R. Coppens, J.A. Coughlan, M.-C. Cousinou, B.E. Cox, G. Cozzika, J. Cvach, J.B. Dainton, W.D. Dau, K. Daum, M. Davidsson, B. Delcourt, N. Delerue, R. Demirchyan, A. De Roeck, E.A. De Wolf, C. Diaconu, J. Dingfelder, P. Dixon, V. Dodonov, J.D. Dowell, A. Droutskoi, A. Dubak, C. Duprel, G. Eckerlin, D. Eckstein, V. Efremenko, S. Egli, R. Eichler, F. Eisele, E. Eisenhandler, M. Ellerbrock, E. Elsen, M. Erdmann, W. Erdmann, P.J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Ferencei, S. Ferron, M. Fleischer, Y.H. Fleming, G. Flügge, A. Fomenko, I. Foresti, J. Formánek, J.M. Foster, G. Franke, E. Gabathuler, K. Gabathuler, J. Garvey, J. Gassner, J. Gayler, R. Gerhards, C. Gerlich, S. Ghazaryan, L. Goerlich, N. Gogitidze, M. Goldberg, C. Goodwin, C. Grab, H. Grässler, T. Greenshaw, G. Grindhammer, T. Hadig, D. Haidt, L. Hajduk, W.J. Haynes, B. Heinemann, G. Heinzelmann, R.C.W. Henderson, S. Hengstmann, H. Henschel, R. Heremans, G. Herrera, I. Herynek, M. Hildebrandt, M. Hilgers, K.H. Hiller, J. Hladký, P. Höting, D. Hoffmann, R. Horisberger, S. Hurling, M. Ibbotson, Ç. İşsever, M. Jacquet, M. Jaffre, L. Janauschek, D.M. Jansen, X. Janssen, V. Jemanov, L. Jönsson, D.P. Johnson, M.A.S. Jones, H. Jung, H.K. Kästli, D. Kant, M. Kapichine, M. Karlsson, O. Karschnick, F. Keil, N. Keller, J. Kennedy, I.R. Kenyon, S. Kermiche, C. Kiesling, P. Kjellberg, M. Klein, C. Kleinwort, T. Kluge, G. Knies, B. Koblitz, S.D. Kolya, V. Korbel, P. Kostka, S.K. Kotelnikov, R. Koutouev, A. Koutov, H. Krehbiel, J. Kroseberg, K. Krüger, A. Küpper, T. Kuhr, T. Kurča, R. Lahmann, D. Lamb, M.P.J. Landon, W. Lange, T. Laštovička, P. Laycock, E. Lebailly, A. Lebedev, B. Leißner, R. Lemrani, V. Lendermann, S. Levonian, M. Lindstroem, B. List, E. Lobodzinska, B. Lobodzinski, A. Loginov, N. Loktionova, V. Lubimov, S. Lüders, D. Lüke, L. Lytkin, H. Mahlke-Krüger, N. Malden, E. Malinovski, I. Malinovski, R. Maraček, P. Marage, J. Marks, R. Marshall, H.-U. Martyn, J. Martyniak, S.J. Maxfield, D. Meer, A. Mehta, K. Meier, P. Merkel, A.B. Meyer, H. Meyer, J. Meyer, P.-O. Meyer, S. Mikocki, D. Milstead, T. Mkrtchyan, R. Mohr, S. Mohrdieck, M.N. Mondragon, F. Moreau, A. Morozov, J.V. Morris, K. Müller, P. Murı́n, V. Nagovizin, B. Naroska, J. Naumann, Th. Naumann, G. Nellen, P.R. Newman, T.C. Nicholls, F. Niebergall, C. Niebuhr, O. Nix, G. Nowak, J.E. Olsson, D. Ozerov, V. Panassik, C. Pascaud, G.D. Patel, M. Peez, E. Perez, J.P. Phillips, D. Pitzl, R. Pöschl, I. Potachnikova, B. Povh, K. Rabbertz, G. Rädel, J. Rauschenberger, P. Reimer, B. Reisert, D. Reyna, C. Risler, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, S. Rusakov, K. Rybicki, D.P.C. Sankey, J. Scheins, F.-P. Schilling, P. Schleper, D. Schmidt, S. Schmitt, M. Schneider, L. Schoeffel, A. Schöning, T. Schörner, V. Schröder, H.-C. Schultz-Coulon, C. Schwanenberger, K. Sedlák, F. Sefkow, V. Shekelyan, I. Sheviakov, L.N. Shtarkov, Y. Sirois, T. Sloan, P. Smirnov, V. Solochenko, Y. Soloviev, D. South, V. Spaskov, A. Specka, H. Spitzer, R. Stamen, B. Stella, J. Stiewe, U. Straumann, M. Swart, M. Taševský, V. Tchernyshov, S. Tchetchelnitski, G. Thompson, P.D. Thompson, N. Tobien, D. Traynor, P. Truöl, G. Tsipolitis, I. Tsurin, J. Turnau, J.E. Turney, E. Tzamariudaki, S. Udluft, A. Usik, S. Valkár, A. Valkárová, C. Vallée, P. Van Mechelen, S. Vassiliev, Y. Vazdik, A. Vichnevski, K. Wacker, R. Wallny, B. Waugh, G. Weber, M. Weber, D. Wegener, C. Werner, M. Werner, N. Werner, G. White, S. Wiesand, T. Wilksen, M. Winde, G.-G. Winter, Ch. Wissing, M. Wobisch, E. Wünsch, A.C. Wyatt, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, F. Zomer, J. Zsembery, M. zur Nedden, and H1 Collaboration
Subjects: Physics, Particle physics, Nuclear and High Energy Physics, Proton, Meson, Scattering, High Energy Physics::Phenomenology, Perturbative QCD, FOS: Physical sciences, HERA, Deep inelastic scattering, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), D meson, Physique des particules élémentaires, High Energy Physics::Experiment, Charm (quantum number), Nuclear Experiment
Abstract: The inclusive production of D*±(2010) mesons in deep-inelastic scattering is studied with the H1 detector at HERA. In the kinematic region 1 < Q2 < 100 GeV2 and 0.05 < y < 0.7 an e+ p cross section for inclusive D*± meson production of 8.50 ± 0.42(stat.)+1.21-1.00 (syst.) nb is measured in the visible range PtD* > 1.5 GeV and ηD*< 1.5. Single and double differential inclusive D*± meson cross sections are compared to perturbative QCD calculations in two different evolution schemes. The charm contribution to the proton structure, FC2(X, Q2), is determined by extrapolating the visible charm cross section to the full phase space. This contribution is found to rise from about 10% at Q2 = 1.5 GeV2 to more than 25% at Q2 = 60 GeV2 corresponding to x values ranging from 5 × 10-5 to 3 × 10-3. © 2002 Elsevier Science B.V. All rights reserved., 0, 400 auteurs, DESY 01-100 / hep-ex/0108039, H1 Collaboration., info:eu-repo/semantics/published
Full Text: View/download PDF

205. Measurement of the inclusive ep scattering cross section at low Q 2 and x at HERA

Author: V. Jemanov, V. Korbel, A. Raspiareza, Krzysztof Kutak, S. Shushkevich, Sakar Osman, A. Eliseev, A. D.R. Vargas Trevino, M. Jacquet, J-P. Meyer, A. Schöning, Grzegorz Nowak, A. Dossanov, A. Petrukhin, N. Loktionova, R. Kogler, P. D. Thompson, J. V. Morris, Jenny List, C. Niebuhr, F. Moreau, Daniel Pitzl, D. Traynor, T. Preda, Wolfgang Lange, S. J. Aplin, A. Asmone, F. Cassol-Brunner, J. Cvach, J. Gayler, Calin Alexa, S. Ghazaryan, Ivan Smiljanic, D. Salek, S. Egli, Y. Soloviev, V. Brisson, Vladimir Andreev, H. U. Martyn, A.J. Rahmat, A. Bunyatyan, Paul Newman, T. Zimmermann, Doris Eckstein, Roland Horisberger, K. H. Hiller, A. Valkárová, R. C. W. Henderson, V. Boudry, J. G. Contreras, Jan Kretzschmar, A. Makankine, G. Buschhorn, D. Ozerov, Christian Helebrant, Marina Rotaru, K. Müller, K. Daum, Voica Radescu, T. Toll, V. Lendermann, Magnus Hansson, Christoph Grab, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, K. Lipka, M. Del Degan, T. H. Tran, A. Lebedev, O. Behrendt, S. Vinokurova, Andrej Liptaj, D. J. Fischer, E. E. Elsen, P. E. Reimer, T. Laštovička, A. Specka, Peter Robmann, B. Stella, David M. South, A. Baghdasaryan, P. Kostka, Emmanuelle Perez, J. Turnau, L. Goerlich, V. Tchoulakov, D. Haidt, A. De Roeck, D. Wegener, Stefan Schmitt, K. Begzsuren, M. Mudrinic, D. Sunar, Gerhard Brandt, V. Volchinski, A. Nikiforov, B. Olivier, E. Barrelet, J. E. Ruiz Tabasco, E. A. De Wolf, Karlheinz Meier, R. Roosen, U. Straumann, L. Bystritskaya, M. E. Janssen, S. M. Piec, I. Tsakov, J. Žáček, H. Zohrabyan, Hans-Christian Schultz-Coulon, H. Meyer, Xavier Janssen, Y. de Boer, Eram Rizvi, O. Pejchal, Ll. Marti, A. Cholewa, S. Backovic, G. Laštovička-Medin, I. Bozovic-Jelisavcic, Vladimir Palichik, Pavel Murin, L. Lytkin, M. Herbst, Cristinel Diaconu, R.N. Shaw-West, Zuzana Rurikova, Tomas Hreus, K. Nowak, T. N. Trinh, V. Cerny, Benno List, V. Dodonov, Pierre Marage, Tim Greenshaw, M. Deak, I. Glushkov, Stephen Maxfield, Laurent Favart, V. Lubimov, A. Knutsson, B. Tseepeldorj, M. Brinkmann, Andrew Mehta, N. Gogitidze, T. J. Sloan, P.J.W. Faulkner, V. Efremenko, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, P. Truöl, A. Astvatsatourov, Mila Pandurovic, G. Thompson, Karel Cerny, O. Behnke, A. Dubak, J. Ferencei, Z. Staykova, Laurent Schoeffel, Ewelina Lobodzinska, L. N. Shtarkov, Judith Katzy, E. Wünsch, Dave Sankey, A. W. Jung, Anna Kropivnitskaya, R. Felst, S. Mikocki, H. Henschel, J. Delvax, G. Herrera, John A Coughlan, M. von den Driesch, G. D. Patel, K. Urban, J.C. Bizot, Murrough Landon, Biljana Antunović, Fabian Zomer, T. Sykora, S. Habib, G. Cozzika, A. Glazov, K. Krüger, E. Hennekemper, C. Schmitz, Hannes Jung, Alexander Zhokin, C. Vallée, P. Van Mechelen, S. Levonian, M. Kapichine, M. Nozicka, B. Delcourt, Leif J. Jönsson, Benoit Roland, J. Feltesse, Ilias Panagoulias, Max Klein, B. R. Grell, M. Sauter, F. Tomasz, M. Fleischer, G. Leibenguth, Bogdan Povh, F. Sefkow, Gang Li, T. Kluge, K. Krastev, Matthias Ulrich Mozer, A. Fedotov, I. Picuric, C. Pascaud, K. B. Cantun Avila, C. Kiesling, Gabriel Stoicea, Guenter Eckerlin, A. J. Campbell, I. Milcewicz-Mika, M. Gouzevitch, R. Plačakytė, P. Sopicki, C. Wissing, Zhen Zhang, Juraj Bracinik, A. M. Fomenko, Ricardo Lopez-Fernandez, Th. Naumann, A. Falkiewicz, E. Gabathuler, M. Steder, D. Hoffmann, V. Michels, J. B. Dainton, J. E. Olsson, W. Bartel, Malte Hildebrandt, I. R. Kenyon, Natasa Raicevic, Y. Vazdik, A. N. Morozov, M. Kraemer, Richard Polifka, V. Chekelian, F. D. Aaron, I. Sheviakov, J. Zálešák, V. Spaskov, A. B. Meyer, Dusan Bruncko, B. Naroska, T. Ravdandorj, A. Rostovtsev, Claus Kleinwort, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), (ukupan broj autora: 259), and H1 Collaboration
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Monte Carlo method, FOS: Physical sciences, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Momentum, Cross section (physics), High Energy Physics - Experiment (hep-ex), Positron, 0103 physical sciences, Radiative transfer, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, HERA, Deep inelastic scattering, Physique des particules élémentaires, High Energy Physics::Experiment, Beam (structure)
Abstract: A measurement of the inclusive ep scattering cross section is presented in the region of low momentum transfers, 0.2∈GeV2 ≤Q 2≤12∈GeV2, and low Bjorken x, 5.10 -6x≤0.02. The result is based on two data sets collected in dedicated runs by the H1 Collaboration at HERA at beam energies of 27.6∈GeV and 920∈GeV for positrons and protons, respectively. A combination with data previously published by H1 leads to a cross section measurement of a few percent accuracy. A kinematic reconstruction method exploiting radiative ep events extends the measurement to lower Q 2 and larger x. The data are compared with theoretical models which apply to the transition region from photoproduction to deep inelastic scattering. © 2009 Springer-Verlag / Società Italiana di Fisica., 0, SCOPUS: ar.j, info:eu-repo/semantics/published
Full Text: View/download PDF

206. Measurement of the charm and beauty structure functions using the H1 vertex detector at HERA

Author: Krzysztof Kutak, Fabian Zomer, J. V. Morris, Jenny List, A. D.R. Vargas Trevino, K. Müller, G. Cozzika, Juraj Bracinik, A.J. Rahmat, A. Bunyatyan, Marina Rotaru, Hannes Jung, Alexander Zhokin, R. Kogler, C. Vallée, J. Cvach, Dusan Bruncko, M. Kraemer, T. Greenshaw, Richard Polifka, V. Chekelian, F. D. Aaron, Christoph Wissing, A. Lebedev, K. Nowak, Stephen Maxfield, Mila Pandurovic, Paul Laycock, C. Niebuhr, D. Haidt, J. E. Olsson, W. Bartel, M. Deak, J. Ferencei, T. Ravdandorj, Claus Kleinwort, Andrew Mehta, N. Gogitidze, S. Egli, Malte Hildebrandt, E. Malinovski, Emmanuel Sauvan, J. Žáček, G. Grindhammer, R. Zus, J. Zálešák, Eram Rizvi, G. Thompson, V. Michels, V. Spaskov, Y. Soloviev, V. Dodonov, A. B. Meyer, Z. Staykova, T. H. Tran, M. Del Degan, A. W. Jung, G. Laštovička-Medin, Hans-Christian Schultz-Coulon, Judith Katzy, J. B. Dainton, P. E. Reimer, H. Henschel, I. R. Kenyon, B. Pokorny, K. Daum, G. Herrera, Alan Campbell, T. Kluge, Roland Horisberger, A. Valkárová, J.C. Bizot, S. Habib, Natasa Raicevic, L. Goerlich, A. Falkiewicz, Voica Radescu, Vincent Boudry, D. Sunar, M. Kapichine, M. Nozicka, E. Hennekemper, Gerhard Brandt, Christoph Grab, A. N. Morozov, K. Krüger, I. Picuric, C. Pascaud, J. Feltesse, Karel Cerny, V. Lubimov, K. Lipka, Ilias Panagoulias, A. Makankine, Guenter Eckerlin, André Schöning, Ivan Smiljanic, A. Nikiforov, D. Salek, B. Delcourt, D. Wegener, G. Buschhorn, D. Ozerov, Tomas Hreus, David M. South, V. Volchinski, V. Lendermann, D. J. Fischer, B. R. Grell, Vladimir Andreev, A. Dubak, Max Klein, H. U. Martyn, D. Traynor, F. Tomasz, Ll. Marti, A. Cholewa, L. N. Shtarkov, M. Sauter, Xavier Janssen, I. Bozovic-Jelisavcic, Leif J. Jönsson, L. Lytkin, Benoit Roland, M. Herbst, V. Efremenko, A. Baghdasaryan, A. Rostovtsev, Cristinel Diaconu, Laurent Schoeffel, B. Tseepeldorj, T. N. Trinh, M. Fleischer, K. Urban, Murrough Landon, S. Mikocki, G. Leibenguth, K. Krastev, S. Shushkevich, Sakar Osman, L. Bystritskaya, I. Glushkov, M. E. Janssen, A. Eliseev, Gabriel Stoicea, A. Glazov, H. Zohrabyan, Gang Li, Bogdan Povh, F. Sefkow, P. Van Mechelen, E. Wünsch, R. Plačakytė, B. Olivier, R.N. Shaw-West, S. Levonian, P. E. Marage, Zhen Zhang, Ricardo Lopez-Fernandez, P. Sopicki, Albert Knutsson, J-P. Meyer, V. Cerny, Benno List, A. M. Fomenko, Anna Kropivnitskaya, S. Vinokurova, I. Milcewicz-Mika, Daniel Pitzl, R. Felst, M. Steder, Maxime Gouzevitch, D. Hoffmann, J. G. Contreras, A. Asmone, Dave Sankey, J. Delvax, P. Kostka, F. Cassol-Brunner, J. Turnau, K. Begzsuren, Jan Kretzschmar, Andrej Liptaj, M. Mudrinic, Wolfgang Lange, M. Jacquet, I. Tsakov, K. Alimujiang, Christian Helebrant, M. von den Driesch, G. D. Patel, Biljana Antunović, T. Sykora, J. Gayler, Paul Newman, T. Zimmermann, Calin Alexa, U. Straumann, A. Raspiareza, Thomas Naumann, S. Ghazaryan, Theodora Papadopoulou, Peter Robmann, Pavel Murin, S. Backovic, Laurent Favart, Zuzana Rurikova, V. Tchoulakov, Matthias Ulrich Mozer, A. Fedotov, K. B. Cantun Avila, C. Kiesling, Grzegorz Nowak, A. Dossanov, A. Petrukhin, M. Aldaya Martin, V. Brisson, E. Barrelet, Y. Vazdik, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, Y. de Boer, P. D. Thompson, F. Moreau, H. J. Meyer, E. Gabathuler, K. H. Hiller, R. C. W. Henderson, A. Specka, M. Brinkmann, N. Loktionova, B. Stella, Stefan Schmitt, T. Preda, Vladimir Palichik, E. E. Elsen, T. Toll, Emmanuelle Perez, S. M. Piec, O. Pejchal, John A Coughlan, T. J. Sloan, A.S. Belousov, Sergey Rusakov, P. Truöl, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), H1 Collaboration, and (ukupan broj autora: 248)
Subjects: Quark, Particle physics, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Elementary particle, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Charm (quantum number), Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Physics, Neutral current, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Deep inelastic scattering, Baryon, Pair production, Physique des particules élémentaires, High Energy Physics::Experiment
Abstract: Inclusive charm and beauty cross sections are measured in e-p and e+p neutral current collisions at HERA in the kinematic region of photon virtuality 5 ≤ Q2≤2000 GeV2 and Bjorken scaling variable 0. 0002≤x≤0.05. The data were collected with the H1 detector in the years 2006 and 2007 corresponding to an integrated luminosity of 189 pb-1. The numbers of charm and beauty events are determined using variables reconstructed by the H1 vertex detector including the impact parameter of tracks to the primary vertex and the position of the secondary vertex. The measurements are combined with previous data and compared to QCD predictions. © Springer-Verlag / Società Italiana di Fisica 2009., 0, DESY-09-096 / arxiv:0907.2643, SCOPUS: ar.j, info:eu-repo/semantics/published
Full Text: View/download PDF

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

Author: H1 Collaboration, V. Andreev, M. Arratia, A. Baghdasaryan, A. Baty, K. Begzsuren, A. Bolz, V. Boudry, G. Brandt, D. Britzger, A. Buniatyan, L. Bystritskaya, A. J. Campbell, K. B. Cantun Avila, K. Cerny, V. Chekelian, Z. Chen, J. G. Contrera, J. Cvach, J. B. Dainton, K. Daum, A. Deshpande, C. Diaconu, A. Drees, G. Eckerlin, S. Egli, E. Elsen, L. Favart, A. Fedotov, J. Feltesse, M. Fleischer, A. Fomenko, C. Gal, J. Gayler, L. Goerlich, N. Gogitidze, M. Gouzevitch, C. Grab, T. Greenshaw, G. Grindhammer, D. Haidt, R. C. W. Henderson, J. Hessler, J. Hladký, D. Hoffmann, R. Horisberger, T. Hreus, F. Huber, P. M. Jacobs, M. Jacquet, T. Janssen, A. W. Jung, J. Katzy, C. Kiesling, M. Klein, C. Kleinwort, H. T. Klest, S. Kluth, R. Kogler, P. Kostka, J. Kretzschmar, D. Krücker, K. Krüger, M. P. J. Landon, W. Lange, P. Laycock, S. H. Lee, S. Levonian, W. Li, J. Lin, K. Lipka, B. List, J. List, B. Lobodzinski, O. R. Long, E. Malinovski, H. U. Martyn, S. J. Maxfield, A. Mehta, A. B. Meyer, J. Meyer, S. Mikocki, V. M. Mikuni, M. M. Mondal, K. Müller, B. Nachman, Th. Naumann, P. R. Newman, C. Niebuhr, G. Nowak, J. E. Olsson, D. Ozerov, S. Park, C. Pascaud, G. D. Patel, E. Perez, A. Petrukhin, I. Picuric, D. Pitzl, R. Polifka, S. Preins, V. Radescu, N. Raicevic, T. Ravdandorj, D. Reichelt, P. Reimer, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, M. Rotaru, D. P. C. Sankey, M. Sauter, E. Sauvan, S. Schmitt, B. A. Schmookler, G. Schnell, L. Schoeffel, A. Schöning, S. Schumann, F. Sefkow, S. Shushkevich, Y. Soloviev, P. Sopicki, D. South, A. Specka, M. Steder, B. Stella, L. Stöcker, U. Straumann, C. Sun, T. Sykora, P. D. Thompson, F. Torales Acosta, D. Traynor, B. Tseepeldorj, Z. Tu, G. Tustin, A. Valkárová, C. Vallée, P. van Mechelen, D. Wegener, E. Wünsch, J. Žáček, J. Zhang, Z. Zhang, R. Žlebčík, H. Zohrabyan, and F. Zomer
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract The Breit frame provides a natural frame to analyze lepton–proton scattering events. In this reference frame, the parton model hard interactions between a quark and an exchanged boson defines the coordinate system such that the struck quark is back-scattered along the virtual photon momentum direction. In Quantum Chromodynamics (QCD), higher order perturbative or non-perturbative effects can change this picture drastically. As Bjorken-x decreases below one half, a rather peculiar event signature is predicted with increasing probability, where no radiation is present in one of the two Breit-frame hemispheres and all emissions are to be found in the other hemisphere. At higher orders in $$\alpha _{s}$$ α s or in the presence of soft QCD effects, predictions of the rate of these events are far from trivial, and that motivates measurements with real data. We report on the first observation of the empty current hemisphere events in electron–proton collisions at the HERA collider using data recorded with the H1 detector at a center-of-mass energy of 319 GeV. The fraction of inclusive neutral-current DIS events with an empty hemisphere is found to be $$0.0112 \pm 3.9\%_\text {stat} \pm 4.5\%_{\text {syst}} \pm 1.6\%_{\text {mod}}$$ 0.0112 ± 3.9 % stat ± 4.5 % syst ± 1.6 % mod in the selected kinematic region of $$150
Published: 2024
Full Text: View/download PDF

208. CHARGED HADRON COMPOSITION OF THE FINAL-STATE IN E+E- ANNIHILATION AT HIGH-ENERGIES

Author: H. Siebke, T. R. Wyatt, W. Koch, G. Poelz, R.C.E. Devenish, W. Wallraff, U. Karshon, Giora Mikenberg, Walter Dr. Hillen, G. Peise, Gl Salmon, R. Wedemeyer, J. K. Sedgebeer, P. Grossmann, H. Venkataramania, T. Barklow, T. Meyer, Norbert Wermes, H. U. Martyn, D. R. Quarrie, J. Pyrlik, Hl Krasemann, J. Harvey, U. Kötz, Ehud Duchovni, A. Shapira, A. Ladage, R. Carnegie, D. A. Garbutt, E. Hilger, John Freeman, B. Foster, D. M. Binnie, O. Römer, S. J. Cooper, E. Lohrmann, K. Lübelsmeyer, T. D. Jones, H. M. Fischer, D. Pandoulas, H. Kowalski, R. Brandelik, D. H. Saxon, P. Söding, I. C. Brock, W. G. Jones, K. W. Bell, P. Mättig, G. Rudolph, Georg Zobernig, B. Löhr, R. Riethmüller, D. Trines, P. Joos, H. Boerner, Hermann Kolanoski, F. J. Kirschfink, H. Kück, G. Yekutieli, M. G. Bowler, E. Wicklund, P. Leu, C. Youngman, P. Lecomte, Stephen Lloyd, K. H. Mess, E.E. Ronat, H. Burkhardt, G. Knop, John Illingworth, P. Schmüser, P. L. Woodworth, Y. Eisenberg, M. Wollstadt, M. Holder, H. Hultschig, W. Braunschweig, B. H. Wiik, John Hart, Sau Lan Wu, D. Heyland, Rj Cashmore, D.W. Schmitz, P. E. L. Clarke, Gy. Wolf, P. J. Dornan, J. Franzke, A. J. Campbell, Juergen Thomas, J. Rimkus, R. Fohrmann, D. Lüke, J. McCardle, K. Gather, R. Beuselinck, M. Althoff, D. Notz, H. Hartmann, J. Proudfoot, W. Schütte, I. Al-Agil, D. Revel, L. Köpke, and H. G. Sander
Subjects: Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Meson, Electron–positron annihilation, Hadron, Nuclear Theory, Elementary particle, Baryon, Nuclear physics, Pion, Antiproton, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous)
Abstract: The inclusive production of π± and K± mesons and of protons and antiprotons in e+e- annihilation has been measured at c.m. energies of W=14, 22 and 34GeV. Using time of flight measurements and Cerenkov counters the full momentum range has been covered. Differential cross sections and total particle yields are given. At particle momenta of 0.4 GeV/c more than 90% of the charged hadrons are pions. With increasing momentum the fraction of pions among the charged hadrons decreases. At W=34 GeV and a momentum of 5 GeV/c the particle fractions are approximately π±:K±:p, {Mathematical expression}. On average an event at W=34 GeV contains 10.3±0.4π±, 2.0±0.2 K± and 0.8±0.1 p, {Mathematical expression}. In addition, we present results on baryon correlations using a sample of events where two or more protons and/or antiprotons are observed in the final state. © 1983 Springer-Verlag.
Published: 1983

209. EVIDENCE FOR PLANAR EVENTS IN E+E- ANNIHILATION AT HIGH-ENERGIES

Author: U. Karshon, A. Pevsner, J. Rimkus, R. Riethmüller, W. Wallraff, E. Kogan, Gl Salmon, T. Meyer, W. Chinowsky, O. Römer, J. Pyrlik, A. Ladage, Lan. Wu Sau, H. L. Lynch, H. U. Martyn, H. M. Fischer, W. Koch, E.E. Ronat, V. Kadansky, A. Shapira, A. Schultz von Dratzig, R. Buhring, G. Poelz, R. Rüsch, Norbert Wermes, Stephen Lloyd, W. Rühmer, P. Lecomte, Roger Barlow, Gy. Wolf, M. Schliwa, K. W. Bell, H. Boerner, C. Youngman, H. Hartmann, W. G. Jones, G. Knop, D. M. Binnie, Georg Zobernig, John Illingworth, R. Wedemeyer, P. L. Woodworth, P. Schmüser, N. A. Downie, Walter Dr. Hillen, D. Revel, D. H. Saxon, G. Peise, K. Lübelsmeyer, P. Söding, J. Ringel, Y. Eisenberg, H. G. Sander, F. Roth, W. Braunschweig, H. Hultschig, B. H. Wiik, S. Yarker, John Hart, D. Notz, P. Mättig, D. R. Quarrie, Rj Cashmore, B. Löhr, J. Proudfoot, P. Joos, B. Foster, D. Lüke, G. Mikenberg, D. Heyland, D.W. Schmitz, P. J. Dornan, M. Holder, K. Gather, H. Kowalski, John Freeman, R. Fohrmann, M. Wollstadt, M. Ogg, J. K. Sedgebeer, W. Korbach, P. Leu, D. Pandoulas, U. Kötz, D. A. Garbutt, E. Hilger, R. Brandelik, and D. Trines
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, Annihilation, Electron–positron annihilation, Astrophysics::High Energy Astrophysical Phenomena, Hadron, High Energy Physics::Phenomenology, Nuclear Theory, Elementary particle, Jet (particle physics), Gluon, Nuclear physics, Transverse plane, High Energy Physics::Experiment, Nuclear Experiment
Abstract: Hadron jets produced in e+e− annihilation between 13 GeV and 31.6 GeV in c.m. at PETRA are analyzed. The transverse momentum of the jets is found to increase strongly with c.m. energy. The broadening of the jets is not uniform in azimuthal angle around the quark direction but tends to yield planar events with large and growing transverse momenta in the plane and smaller transverse momenta normal to the plane. The simple q q collinear jet picture is ruled out. The observation of planar events shows that there are three basic particles in the final state. Indeed, several events with three well-separated jets of hadrons are observed at the highest energies. This occurs naturally when the outgoing quark radiates a hard noncollinear gluon, i.e., e + e − → q q g with the quarks and the gluons fragmenting into hadrons with limited transverse momenta.
Published: 1979

210. π0 production by e+e- annihilation at 14 and 34 GeV c.m. energy

Author: Hl Krasemann, W. G. Jones, M. Holder, K. Gather, D Pandoulas, G. Mikenberg, T. Barklow, E.E. Ronat, D. Trines, G. Knop, P. Grossmann, Juergen Thomas, B. Foster, J. Sedgbeer, W. Wallraff, Hermann Kolanoski, T. D. Jones, H. Hultschig, B. H. Wiik, John Hart, R.C.E. Devenish, P. J. Dornan, Gl Salmon, D. Notz, R. Wedemeyer, T. R. Wyatt, Norbert Wermes, S. L. Wu, T. Meyer, R. J. Cashmore, Ehud Duchovni, M. G. Bowler, U. Kötz, D. Lüke, Y. Eisenberg, D. A. Garbutt, Walter Dr. Hillen, F. J. Kirschfink, G. Peise, A. Ladage, W. Braunschweig, C. Youngman, H. Hartmann, H. Boerner, P. Leu, W. Koch, L. Köpke, J. Proudfoot, R. Beuselinck, E. Hilger, D. Heyland, H. G. Sander, K. Lübelsmeyer, D.W. Schmitz, A. Shapira, P. Söding, Quarrie, G. Poelz, R. Brandelik, A. J. Campbell, R. Fohrmann, D. Revel, I. C. Brock, K. H. Mess, O. Römer, John Freeman, M. Ogg, G. Rudolph, P. Joos, E. Wicklund, I. Al-Agil, U. Karshon, Gy. Wolf, H. Burkhardt, P. Schmüser, RA Stern, J. Pyrlik, H. Kowalski, D. H. Saxon, Sl Lloyd, R. Riethmüller, S. Cooper, M. Wollstadt, H. U. Martyn, D. M. Binnie, J. Rimkus, John Illingworth, P. L. Woodworth, H. L. Lynch, K. W. Bell, S Yarker, P. Mättig, AS von Dratzig, H. M. Fischer, and Georg Zobernig
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Production (computer science), Energy (signal processing), Lower energy
Abstract: The process e+e-→ π0 + anything has been measured at c.m. energies of 14 and 34 GeV for π0 energies between 0.5 and 4 GeV. The ratio of π0 to π± production for π momenta between 0.5 and 1.5 GeV/c is measured to be 2σ(π0)/ [σ(π+) + σ(π-)] = 1.3 ± 0.4 (1.2 ± 0.4) at 14 (34) GeV. The scaled cross section (s/μ)dσ/dx when compared with lower energy (4.9-7.4 GeV) π0 data indicates a substantial scaling violation. © 1982.
Published: 1982

211. Measurement of the two-photon reaction γγ →π+π-π+π- at large values of Q2

Author: J. M. Pawlak, K. Gather, G. Mikenberg, U. Karshon, I. R. Tomalin, R. Wedemeyer, E.E. Ronat, A. Ladage, Guenter Wolf, H. M. Fischer, D. M. Binnie, C. Balkwill, Janusz Chwastowski, B. Löhr, A. J. Martin, P. Joos, D. Trines, B. Foster, Georg Zobernig, D. H. Saxon, E. Wicklund, F. J. Kirschfink, M. Holder, B. Bock, H. Hultschig, John Hart, Sau Lan Wu, T. Kracht, E. Lohrmann, A. Leites, I. M. Silvester, Hermann Kolanoski, P. N. Ratoff, G. P. Heath, M. E. Veitch, N. Wainer, A. Eskreys, P. Mättig, L. Labarga, J. Shulman, A. Caldwell, John Hassard, H. Kowalski, R. Gerhards, G. Poelz, H. U. Martyn, Jens Hartmann, D. Su, G. E. Forden, D. Notz, Stephanie Brandt, E. Bernardi, M. Takashima, J. Krüger, H. Hartmann, Y. Eisenberg, R. Walczak, W. Braunschweig, K. Genser, M. G. Bowler, A. Jocksch, G. Yekutieli, Wolfram Dietrich Zeuner, E. Hilger, K. U. Pösnecker, Fernando Barreiro, Eduardo Ros, A. Shapira, D. Muller, D. Strom, A. J. Sephton, D. Revel, D. Lüke, S. Ritz, A. Montag, J. Del Peso, and Philip Burrows
Subjects: Physics, Range (particle radiation), Photon, Physics and Astronomy (miscellaneous), Quantum mechanics, Phase space, Four-momentum, Form factor (quantum field theory), Virtual particle, Elementary particle, Atomic physics, Quantum field theory, Engineering (miscellaneous)
Abstract: The process γγ→π+π-π+π- has been investigated in reactions of the type e+e-→e+e-π+π-π+π- in the single tag mode. The range of the four momentum squared of one of the virtual photons was 0.28 GeV2/c2≦Q2≦3.6 GeV2/c2, the average being 〈Q2〉=0.92 GeV2/c2; the other photon was quasi real. The reaction is mainly described by the channels γγ→ρ0ρ0 and γγ→4π (phase space), occuring with about equal probability. The Q2-dependence of the cross section is in agreement with the ρ form factor. © 1988 Springer-Verlag.
Published: 1988

212. VECTOR-MESON PRODUCTION IN THE FINAL-STATE K+K-PI+PI- OF PHOTON-PHOTON COLLISIONS

Author: H. Kück, V. Mertens, M. Holder, H. Hultschig, W. G. Jones, John Hart, Sau Lan Wu, A. Ladage, S. Ritz, B. Löhr, P. Joos, B. Foster, E. Wicklund, G. Yekutieli, D. J. Mellor, K. W. Bell, D. M. Binnie, D. Strom, K. Gather, E. Ros, P. Mättig, Stephanie Brandt, Boaz Klima, G. Mikenberg, R. J. Cashmore, E.E. Ronat, M. Takashima, P. D. Dauncey, T. Tymieniecka, R. Wedemeyer, R. Mir, D. Trines, P. J. Dornan, D. Su, C. Jenkins, H. Kowalski, D. A. Garbutt, Guenter Wolf, G. Baranko, W. A. T. Wan Abdullah, B. Bock, W. Wallraff, R.C.E. Devenish, Hermann Kolanoski, J. Krüger, J. K. Sedgbeer, H. Hartmann, Y. Eisenberg, E. Bernardi, T. Kracht, R. Walczak, W. Braunschweig, H. U. Martyn, A. Montag, M. Cherney, Wolfram Dietrich Zeuner, J. Thomas, M. Althoff, D. Notz, A. Jocksch, Fernando Barreiro, K. U. Pösnecker, D. Revel, A. Shapira, P. Rosskamp, E. Hilger, S. L. Lloyd, M. G. Bowler, G. Poelz, R. Gerhards, G. P. Heath, Hl Krasemann, J.F. Kirschfink, A. Caldwell, E. Lohrmann, J. Eisenmann, Ehud Duchovni, A. Eskreys, U. Karshon, L. Labarga, B. Neumann, G. E. Forden, P. N. Ratoff, D. K. Hasell, Joseph Izen, H. M. Fischer, Georg Zobernig, D. H. Saxon, Philip Bull, and D. Lüke
Subjects: Nuclear physics, Physics, Particle physics, Antiparticle, Particle decay, Pion, Effective mass (solid-state physics), Pair production, Physics and Astronomy (miscellaneous), Meson, Elementary particle, Vector meson, Engineering (miscellaneous)
Abstract: Vector meson production is studied in the reaction γγ→K+K-π+π-. A clear Φ(1020) signal is seen in the K+K- mass distribution and a K*0 (890) signal is visible in the K±π∓ one. Both do not seem to be strongly correlated with quasi two body final states. Cross sections for the processes γγ→K+K-π+π-, γγ→Φπ+π-, γγ→K+0K±π∓ and upper limits for the production of Φp, ΦΦ and K*0 {Mathematical expression} are given as function of the invariant γγ mass. © 1986 Springer-Verlag.
Published: 1986

213. CHARGED MULTIPLICITY DISTRIBUTIONS AND CORRELATIONS IN E+E- ANNIHILATION AT PETRA ENERGIES

Author: B. Löhr, E. Hilger, D. Muller, Fernando Barreiro, P. Joos, B. Foster, K. U. Pösnecker, D. H. Saxon, D. Strom, A. Shapira, J. Shulman, A. Leites, D. Revel, A. Eskreys, A. Montag, Philip Burrows, J. Krüger, J. Del Peso, K. Gather, Stephanie Brandt, H. Hartmann, J. F. Hassard, R. Gerhards, H. U. Martyn, M. E. Veitch, Janusz Chwastowski, N. Wainer, G. E. Forden, A. Ladage, Wolfram Dietrich Zeuner, E. Bernardi, H. M. Fischer, A. J. Martin, K. Genser, F. J. Kirschfink, G. Poelz, M. G. Bowler, J. M. Pawlak, Georg Zobernig, U. Karshon, Eduardo Ros, T. Kracht, P. Mättig, H. Kowalski, D. Notz, D. Trines, Jens Hartmann, R. Wedemeyer, E.E. Ronat, Giora Mikenberg, D. Su, A. Caldwell, A. Jocksch, Hermann Kolanoski, Gy. Wolf, M. Takashima, M. Holder, D. Lüke, S. Ritz, H. Hultschig, John Hart, Sau Lan Wu, E. Lohrmann, Y. Eisenberg, R. Walczak, W. Braunschweig, and G. Yekutieli
Subjects: Physics, Quark, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Electron–positron annihilation, Hadron, Lund string model, Multiplicity (mathematics), Elementary particle, Charged particle, Nuclear physics, High Energy Physics::Experiment, Engineering (miscellaneous)
Abstract: We report on an analysis of the multiplicity distributions of charged particles produced in e+e- annihilation into hadrons at c.m. energies between 14 and 46.8 GeV. The charged multiplicity distributions of the whole event and single hemisphere deviate significantly from the Poisson distribution but follow approximate KNO scaling. We have also studied the multiplicity distributions in various rapidity intervals and found that they can be well described by the negative binomial distribution only for small central intervals. We have also analysed forward-backward multiplicity correlations for different energies and selections of particle charge and shown that they can be understood in terms of the fragmentation properties of the different quark flavours and by the production and decay of resonances. These correlations are well reproduced by the Lund string model. © 1989 Springer-Verlag.
Published: 1989

214. PARTICLE CORRELATION OBSERVED IN E+E- ANNIHILATIONS INTO HADRONS AT CM ENERGIES BETWEEN 29 AND 37 GEV

Author: H. Kowalski, U. Karshon, M. Takashima, Stephanie Brandt, H. U. Martyn, D. Su, B. Löhr, K. Gather, E. Ros, D. Strom, P. Joos, B. Foster, Boaz Klima, Luis Labarga, W. G. Jones, H. Venkataramania, H. Kück, E. Wicklund, B. Neumann, R. Rosskamp, G. E. Forden, D. J. Mellor, P. D. Dauncey, T. Tymieniecka, H. Hartmann, E. Hilger, U. Kötz, G. Baranka, D. Trines, R.C.E. Devenish, K. U. Pösnecker, H. Siebke, W. A. T. Wan Abdullah, P. J. Dornan, D. A. Garbutt, E. Bernardi, Y. Eisenberg, A. Shapira, M. Althoff, R. Wedemeyer, D. Notz, Fernando Barreiro, R. Fohrmann, W. Braunschweig, P. N. Ratoff, A. Jocksch, Hermann Kolanoski, T. Kracht, C. M. Hawkes, D. Lüke, J. K. Sedgbeer, C. Jenkins, Rj Cashmore, S. Ritz, G. Poelz, Michael Dittmar, Wolfram Dietrich Zeuner, G. Yekutieli, M. Hildebrandt, Gy. Wolf, D. H. Saxon, M. Mermikides, D. Revel, P. Mättig, W. Wallraff, Philip Bull, G. Kreutz, R. Mir, A. T. Wood, M. G. Bowler, G. Mikenberg, A. Montag, M. Cherney, F. J. Kirschfink, J. Thomas, E.E. Ronat, G. Knop, M. Holder, H. Hultschig, John Hart, A. Lagage, A. Caldwell, Stephen Lloyd, G. P. Heath, Hl Krasemann, D. K. Hasell, Ehud Duchovni, Joseph Izen, H. M. Fischer, E. Lohrmann, J. Eisenmann, A. Eskreys, Georg Zobernig, V. Mertens, K. W. Bell, S. L. Wu, and D. M. Binnie
Subjects: Quantum chromodynamics, Physics, Particle physics, Range (particle radiation), Physics and Astronomy (miscellaneous), Electron–positron annihilation, Hadron, Charge (physics), Charged particle, Nuclear physics, Particle, Rapidity, High Energy Physics::Experiment, Engineering (miscellaneous)
Abstract: We have studied the correlations between charged particles produced in e+e- annihilations into hadrons at c.m. energies between 29 and 37 GeV. We have analysed the correlations between the charged multiplicities of the jets and the two particle rapidity and charge correlations. No evidence for correlations between the multiplicities of the two jets is found. Two particle short range rapidity and charge correlations are observed, indicating that particles cluster in rapidity and that their charges compensate locally. An extensive study of these correlation effects by QCD Monte Carlo calculations was performed. Evidence for charge correlations due to Bose-Einstein statistics is also observed. © 1985 Springer-Verlag.
Published: 1985

215. PRODUCTION AND PROPERTIES OF THE TAU-LEPTON IN E+E- ANNIHILATION AT CM ENERGIES FROM 12-GEV TO 31.6-GEV

Author: H. M. Fischer, W. Wallraff, M. Holder, K. Gather, Georg Zobernig, Gl Salmon, I. C. Brock, W. Koch, P. Lecomte, D. Trines, D. H. Saxon, T. Meyer, G. Poelz, P. Koehler, D. Pandoulas, P. Mättig, Y. Eisenberg, N. A. Downie, Stephen Lloyd, J. K. Sedgbeer, A. Ladage, D. Lüke, W. Braunschweig, R. Riethmüller, Walter Dr. Hillen, Rj Cashmore, G. Peise, B. Roe, O. Römer, J. Pyrlik, R.C.E. Devenish, G. Mikenberg, D. G. Cassel, H. Hartmann, Roger Barlow, M. Schliwa, S. Yarker, D. R. Quarrie, D. Heyland, P. Grossmann, D. Revel, J. Proudfoot, H. L. Lynch, H. U. Martyn, A. Schultz von Dratzig, C. Youngman, T. R. Wyatt, D.W. Schmitz, P. Schmüser, M. Wollstadt, K. Lübelsmeyer, H. Boerner, K. W. Bell, John Freeman, M. Ogg, P. J. Dornan, P. Söding, V. Kadansky, H. Kowalski, D. Notz, U. Karshon, E. Hilger, R. Rüsch, R. Wedemeyer, B. Löhr, Gy. Wolf, R. Fohrmann, P. Joos, R. Brandelik, B. Foster, U. Kötz, P. Leu, D. A. Garbutt, H. Hultschig, B. H. Wiik, John Hart, Sau Lan Wu, A. Shapira, E.E. Ronat, G. Knop, Norbert Wermes, D. M. Binnie, J. Rimkus, W. G. Jones, John Illingworth, P. L. Woodworth, and H. G. Sander
Subjects: Physics, Nuclear physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Cutoff, High Energy Physics::Experiment, Lepton
Abstract: We have observed τ production in e+e- annihilation at centre-of-mass energies between 12 and 31.6 GeV with cross sections in agreement with the QED τ-pair cross section. Branching ratios for τ decay have been measured and are consistent with the world averages. We have determined the cutoff parameters of QED Λ+ (Λ-) to be > 73 GeV (82 GeV) and have obtained an upper limit on the τ lifetime of 1.4 × 10-12 s(95% CL). © 1980.
Published: 1980

216. SEARCH FOR SPINLESS BOSONS IN E+E- ANNIHILATION

Author: P. Mättig, V. Mertens, D. Trines, H. U. Martyn, Hermann Kolanoski, J. K. Sedgbeer, W. A. T. Wan Abdullah, T. D. Jones, A. Ladage, H. Siebke, H. Hartmann, J. McCardle, P. E. L. Clarke, Y. Eisenberg, W. Braunschweig, T. Kracht, W. Schütte, Fernando Barreiro, K. W. Bell, D. Lüke, S. Ritz, K. Gather, P. Dauncey, B. Neumann, C. M. Hawkes, H. Kück, M. Dittmar, Boaz Klima, T. Tymieniecka, Gy. Wolf, R. Beuselinck, D.W. Schmitz, B. Löhr, U. Kötz, M. Althoff, D. Notz, Giora Mikenberg, G. Yekutieli, P. Joos, B. Foster, U. Karshon, R. Wedemeyer, P. J. Dornan, D. A. Garbutt, G. E. Forden, R. J. Nowak, E. Wicklund, G. Baranko, D. Pandoulas, K. U. Pösnecker, W. G. Jones, D. Strom, D. J. Mellor, R. Fohrmann, M. Takashima, R. Rosskamp, M. Rushton, H. Venkataramania, R.C.E. Devenish, G. Rudolph, J. Pyrlik, A. Shapira, P. Leu, E. Hilger, M. Mermikides, D. Revel, R. Mir, C. Jenkins, Rj Cashmore, P. Grossmann, H. Kowalski, G. Poelz, Wolfram Dietrich Zeuner, W. Wallraff, Philip Bull, G. Kreutz, J. Harvey, D. M. Binnie, M. Cherney, D. H. Saxon, J. Thomas, C. Youngman, A. Jocksch, M. G. Bowler, M. Holder, H. Hultschig, John Hart, Sau Lan Wu, F. J. Kirschfink, E.E. Ronat, S. Brandt, Hl Krasemann, G. Knop, E. Lohrmann, J. Eisenmann, H. M. Fischer, Georg Zobernig, D. K. Hasell, Joseph Izen, A. Caldwell, Stephen Lloyd, Ehud Duchovni, and A. Eskreys
Subjects: Physics, Quark, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Annihilation, Hadron, High Energy Physics::Phenomenology, law.invention, Nuclear physics, law, High Energy Physics::Experiment, Center of mass, Collider, Nuclear Experiment, Boson, Lepton
Abstract: We have measured the cross sections for e+e− → e+e−, e+e− → μ+μ−, e+e− → γγ and e+e− → hadrons in an energy scan at center of mass energies between 39.79 and 46.72 GeV in 30 MeV steps. New spinless bosons, whose existence has been postulated as a possible means to explain the anomalously large radiative width of the Z0 found at the CERN SPS p p collider, are ruled out in the scan region. The data are used to set limits on the couplings to lepton, photon and quark pairs of bosons with masses above 46.72 GeV.
Published: 1985

217. PRODUCTION AND MUONIC DECAY OF HEAVY QUARKS IN E+E- ANNIHILATION AT 34.5 GEV

Author: H. Venkataramania, J. Pyrlik, E. Hilger, D. Trines, W. Koch, H. Kowalski, C. Youngman, G. Poelz, Hermann Kolanoski, J. K. Sedgbeer, W. A. T. Wan Abdullah, G. E. Forden, Walter Dr. Hillen, H. Hartmann, R. Mir, G. Peise, J. Proudfoot, A. L. Campbell, W. Jocksch, Michael Dittmar, G. Yekutieli, P. E. L. Clarke, R. Wedemeyer, T. Barklow, R.C.E. Devenish, K. W. Bell, P. Mättig, M. Althoff, D. Notz, B. Foster, D. M. Binnie, A. Shapira, M. Holder, Norbert Wermes, H. Hultschig, B. H. Wiik, John Hart, Sau Lan Wu, B. Löhr, P. Joos, E. Wicklund, K. Lübelsmeyer, Y. Eisenberg, W. Braunschweig, Hl Krasemann, C. M. Hawkes, Juergen Thomas, P. Leu, E. Lohrmann, D.W. Schmitz, D. Strom, P. J. Dornan, D. Pandoulas, H. Siebke, R. Fohrmann, H. U. Martyn, T. R. Wyatt, M. Rushton, G. Rudolph, W. Wallraff, Philip Bull, D. Lüke, L. Köpke, M. Cherney, U. Kötz, H. G. Sander, D. A. Garbutt, W. Schütte, R. J. Nowak, Fernando Barreiro, J. Harvey, J. Rimkus, M. Mermikides, D. Revel, Gy. Wolf, Ch. Xiao, P. Rosskamp, M. G. Bowler, C. Jenkins, Rj Cashmore, W. G. Jones, Ehud Duchovni, P. L. Woodworth, P. Grossmann, J. McCardle, K. Gather, T. D. Jones, R. Beuselinck, D. K. Hasell, D. Ronat, Gl Salmon, Joseph Izen, D. R. Quarrie, A. Ladage, F. J. Kirschfink, D. H. Saxon, A. Caldwell, U. Karshon, Stephen Lloyd, G. Knop, B. Neumann, H. M. Fischer, Georg Zobernig, Giora Mikenberg, H. Kück, M. Wollstadt, and T. Kracht
Subjects: Nuclear physics, Physics, Particle decay, Particle physics, Muon, Pair production, Annihilation, Physics and Astronomy (miscellaneous), Branching fraction, Electron–positron annihilation, Hadron, Engineering (miscellaneous), Lepton
Abstract: The production of prompt muons in e+e- annihilation has been studied at centre of mass energies near 34.5 GeV. The measured semi-muonic branching ratios of b and c quarks are B(b»Xμv) =0.117±0.028±0.01 and B(c→Xμv)=0.082 ±0.012a-0.01+0.02. The fragmentation functions of heavy quarks are hard, =0.85a-0.12-0.07+0.10+0.02 and =0.77a-0.07-0.11+0.05+0.03. Limits have been set on flavour changing neutral current decays:B(b→Xμ+μ-)
Published: 1984

218. Charge asymmetry and weak interaction effects in e+e-→μ+μ- and e+e-→τ+τ

Author: M. Wollstadt, J. Pyrlik, H. Hultschig, K. H. Mess, B. H. Wiik, Norbert Wermes, H. L. Lynch, E. Hilger, R. Brandelik, Sau Lan Wu, P. J. Dornan, Ehud Duchovni, W. G. Jones, M. Holder, K. Gather, J. Rimkus, Gl Salmon, H. U. Martyn, D. H. Saxon, K. W. Bell, R.C.E. Devenish, U. Kötz, D. A. Garbutt, C. Youngman, T. Meyer, D. R. Quarrie, Walter Dr. Hillen, D. Notz, E.E. Ronat, D. Heyland, B. Foster, J. Sedgbeer, G. Peise, K. Lübelsmeyer, P. Söding, John Freeman, M. Ogg, P. Schmüser, O. Römer, G. Knop, J. C. Hart, Sl Lloyd, A. Ladage, D.W. Schmitz, D. M. Binnie, Juergen Thomas, A. Shapira, S Yarker, W. Koch, A. J. Campbell, S. Cooper, R. Riethmüller, I. C. Brock, Rj Cashmore, G. Poelz, H. M. Fischer, Y. Eisenberg, Giora Mikenberg, W. Braunschweig, H. Hartmann, R. Fohrmann, P. Grossmann, W. Wallraff, M. G. Bowler, F. J. Kirschfink, G. Rudolph, Georg Zobernig, D. Trines, J. Proudfoot, John Illingworth, P. L. Woodworth, J. Harvey, T. D. Jones, R. Wedemeyer, D. Pandoulas, T. Barklow, Hermann Kolanoski, P. Mättig, H. Boerner, R. Beuselinck, P. Leu, Hl Krasemann, B. Löhr, T. R. Wyatt, P. Joos, D. Lüke, E. Wicklund, H. Kowalski, L. Köpke, H. G. Sander, I. Al-Agil, U. Karshon, R. Carnegie, H. Burkhardt, D. Revel, Gy. Wolf, and RA Stern
Subjects: Nuclear physics, Physics, Nuclear and High Energy Physics, Neutral current, Coupling strength, Electron–positron annihilation, media_common.quotation_subject, Analytical chemistry, Charge (physics), Weak interaction, Asymmetry, Pseudovector, media_common
Abstract: We have measured, at an average centre-of-mass energy of 34.22 GeV a forward-backward charge asymmetry in the reaction e + e − → μ + μ − of value −0.161 ± 0.032. This demonstrates the existence of an axial vector neutral current with coupling strength of g e a g μ a =0.53 ± 0.10. We have also obtained a limit on the vector coupling strength of g e v g μ v 2 θ W =0.29 +0.09 −0.11 . From the reaction e + e − → τ + τ − we have found g e a g τ a g e v g τ v
Published: 1982

219. A STUDY OF BHABHA SCATTERING AT PETRA ENERGIES

Author: H. U. Martyn, P. N. Ratoff, G. E. Forden, D. M. Binnie, R. Gerhards, J. Krüger, G. Baranko, Wolfram Dietrich Zeuner, P. Joos, B. Foster, J. P. Cerezo, P. D. Dauncey, E. Wicklund, D. J. Mellor, Rj Cashmore, B. Bock, T. Kracht, N. Wainer, J. Del Peso, D. Muller, D. Strom, A. Watson, P. Mättig, J. Chwastowski, A. J. Sephton, K. U. Pösnecker, K. Gather, G. Yekutieli, C. Balkwill, V. Mertens, J. Hartmann, M.A. Garcia, A. Leites, J. M. Yelton, B. Löhr, D. H. Saxon, E. Lohrmann, E. Ronat, D. Notz, G. Poelz, D. Lüke, Joseph Izen, R. Wedemeyer, A. Ladage, S. Ritz, H. M. Fischer, A. J. Martin, A. Shapira, Fernando Barreiro, Hermann Kolanoski, H. Hartmann, A. Eskreys, R. Walczak, J. K. Sedgbeer, A. Montag, L. Labarga, E. Ros, I. R. Tomalin, M. Holder, Georg Zobernig, D. Trines, H. Hultschig, W. Braunschweig, A. Jocksch, E. Hilger, J. Pawlak, Stephanie Brandt, D. Su, T. Tymieniecka, M. Takashima, John Hart, H. Kowalski, G. P. Heath, P. Rosskamp, Y. Eisenberg, D. Revel, Philip Burrows, Sau Lan Wu, J. F. de Trocóniz, J. Shulman, Gy. Wolf, A. Caldwell, E. Bernardi, K. Genser, M. G. Bowler, Stephen Lloyd, Giora Mikenberg, F. J. Kirschfink, and U. Karshon
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), Electroweak interaction, Elementary particle, Weinberg angle, Physics::History of Physics, Standard Model, Nuclear physics, Particle acceleration, High Energy Physics::Experiment, Center of mass, Quantum field theory, Engineering (miscellaneous), Bhabha scattering
Abstract: We report on high statistics Bhabha scattering data taken with the TASSO experiment at PETRA at center of mass energies from 12 GeV to 46.8 GeV. We present an analysis in terms of electroweak parameters of the standard model, give limits on QED cut-off parameters and look for possible signs of compositeness. © 1988 Springer-Verlag.
Published: 1988

220. Two photon results from TASSO

Author: C. Youngman, R.C.E. Devenish, E.E. Ronat, Gl Salmon, H. L. Lynch, J. Rimkus, N. A. Downie, B. Roe, T. Meyer, H. U. Martyn, H. Hartmann, G. Knop, H. Fischer, R. Wedemeyer, Guenter Wolf, A. Ladage, M. Wollstadt, Norbert Wermes, D. Pandoulas, D. G. Cassel, Roger Barlow, B. Löhr, A. Shapira, M. Schliwa, H. Boerner, P. Joos, Georg Zobernig, T. R. Wyatt, M. Holder, P. Leu, R. Riethmüller, A. Schultz von Dratzig, B. Foster, H. Hultschig, P. Grossmann, U. Karshon, K. W. Bell, B. H. Wiik, John Hart, W. G. Jones, V. Kadansky, D. Revel, L. Koepke, Sau Lan Wu, J. Proudfoot, G. Mikenberg, I. C. Brock, K. Gather, John Illingworth, P. Mättig, D. Notz, J. Pyrlik, P. L. Woodworth, D. H. Saxon, D. Lüke, R. Rüsch, M. Ogg, W. Koch, D. M. Binnie, H. G. Sander, D. R. Quarrie, D. Heyland, G. Poelz, D.W. Schmitz, H. Kowalski, P. J. Dornan, Stephen Lloyd, R. Fohrmann, D. Trines, P. Schmüser, R. J. Cashmore, W. Wallraff, U. Kötz, Hermann Kolanoski, J. K. Sedgbeer, D. A. Garbutt, E. Hilger, P. Koehler, R. Brandelik, K. Lübelsmeyer, P. Söding, Walter Dr. Hillen, G. Peise, P. Lecomte, J. Freemann, S. Yarker, Y. Eisenberg, W. Braunschweig, and O. Römer
Subjects: Physics, Nuclear physics, Annihilation, Two-photon excitation microscopy, Physics::Plasma Physics, Detector, Computer Science::Computation and Language (Computational Linguistics and Natural Language and Speech Processing), High Energy Physics::Experiment, Invariant mass, Physics::History of Physics, Storage ring
Abstract: Two photon annihilation processes were observed with the TASSO detector at the e+e- storage ring PETRA. We report on the analyses of untagged and single tag events.
Published: 1980

221. INCLUSIVE-P0 PRODUCTION IN E+E- ANNIHILATION AT HIGH-ENERGY

Author: M. Holder, H. Hultschig, B. H. Wiik, John Hart, P. Schmüser, Sau Lan Wu, P. J. Dornan, Gl Salmon, R. J. Cashmore, Y. Eisenberg, K. Lübelsmeyer, P. Söding, W. Braunschweig, J. Harvey, K. H. Mess, R. Wedemeyer, P. Mättig, E.E. Ronat, U. Kötz, I. Al-Agil, T. Meyer, O. Römer, G. Knop, U. Karshon, D. A. Garbutt, D. Heyland, T. Barklow, E. Lohrmann, B. Foster, J. Sedgbeer, A. Ladage, K. W. Bell, H. Boerner, J. Pyrlik, D.W. Schmitz, R. Riethmüller, D. Pandoulas, S. Cooper, F. J. Kirschfink, A. J. Campbell, Ehud Duchovni, M. G. Bowler, E. Hilger, R. Beuselinck, Juergen Thomas, W. G. Jones, John Illingworth, R. Carnegie, R. Fohrmann, R. Brandelik, G. Rudolph, D. R. Quarrie, P. Joos, A. Shapira, P. L. Woodworth, D. H. Saxon, C. Youngman, D. Trines, K. Gather, Norbert Wermes, E. Wicklund, W. Koch, B. Löhr, W. Wallraff, H. Siebke, G. Mikenberg, Hermann Kolanoski, G. Poelz, Sl Lloyd, M. Wollstadt, H. L. Lynch, T. R. Wyatt, I. C. Brock, J. Rimkus, R.C.E. Devenish, M. Dittmar, P. Leu, Hl Krasemann, Gy. Wolf, D. Lüke, P. E. L. Clarke, H. Burkhardt, Walter Dr. Hillen, G. Peise, P. Grossmann, RA Stern, J. Franzke, W. Schütte, T. D. Jones, H. M. Fischer, H. Hartmann, Georg Zobernig, J. Proudfoot, D. Revel, L. Köpke, D. Notz, H. G. Sander, H. Kowalski, H. U. Martyn, and D. M. Binnie
Subjects: Physics, Scattering cross-section, Nuclear physics, Nuclear and High Energy Physics, Particle physics, High energy, Range (particle radiation), Annihilation, Electron–positron annihilation, Hadron
Abstract: We have observed ρ{variant}0 production in e+e- annihilation to hadrons at high energies. The differential cross section at a centre of mass energy W, of 34 GeV, is presented. In the range 0.2< x < 0.7, we measure 0.33 ± 0.06 (stat.) ± 0.07 (syst.), 0.22 ± 0.06 ± 0.05 and 0.22 ± 0.02 ± 0.05 ρ{variant}0/event at W = 14, 22 and 34 GeV respectively. © 1982.
Published: 1982

222. HIGH PT HADRON-PRODUCTION IN PHOTON-PHOTON COLLISIONS

Author: H. M. Fischer, Y. Eisenberg, M. Wollstadt, U. Karshon, W. Braunschweig, Gl Salmon, T. Meyer, Georg Zobernig, J. Rimkus, M. Holder, A. Ladage, K. Gather, G. Mikenberg, R. Beuselinck, I. Al-Agil, P. Lecomte, J. Pyrlik, P. Joos, B. Foster, P. L. Woodwarth, H. Hartmann, O. Römer, E.E. Ronat, G. Rudolph, T. Barklow, D. Revel, E. Wicklund, G. Knop, D. Lüke, S. Cooper, L. Köpke, R. A. Stern, K. Lübelsmeyer, H. L. Lynch, P. Söding, H. Kowalski, P. Schmüser, Walter Dr. Hillen, G. Peise, P. Grossmann, A. Schultz von Dratzig, H. G. Sander, Hl Krasemann, D. R. Quarrie, R.C.E. Devenish, J. Proudfoot, K. W. Bell, P. Mättig, A. Shapira, F. J. Kirschfink, John Freeman, P. Leu, Juergen Thomas, D. Pandoulas, M. Ogg, S. Yarker, T. D. Jones, D. H. Saxon, H. Hultschig, B. H. Wiik, John Hart, Sau Lan Wu, D. Heyland, H. U. Martyn, R. Riethmüller, D.W. Schmitz, I. C. Brock, W. G. Jones, P. J. Dornan, Stephen Lloyd, A. J. Campbell, Gy. Wolf, K. H. Mess, R. Wedemeyer, John Illingworth, W. Koch, C. Youngman, R. Fohrmann, Ehud Duchovni, H. Boerner, G. Poelz, D. Notz, H. Burkhardt, R. Rüsch, T. R. Wyatt, D. Trines, M. G. Bowler, W. Wallraff, Hermann Kolanoski, J. K. Sedgbeer, E. Hilger, D. M. Binnie, R. Brandelik, Norbert Wermes, R. J. Cashmore, U. Kötz, and D. A. Garbutt
Subjects: Coupling, Nuclear physics, Quark, Physics, Nuclear and High Energy Physics, Particle physics, Transverse plane, Cross section (physics), Photon, Scattering, Hadron, High Energy Physics::Experiment, Storage ring
Abstract: We have studied the properties of hadron production in photon-photon scattering with tagged photons at the e+e- storage ring PETRA. A tail in the pT distribution of particles consistent with pT-4 has been observed. We show that this tail cannot be due to the hadronic part of the photon. Selected events with high pT particles are found to be consistent with a two-jet structure as expected from a point-like coupling of the photons to quarks. The lowest-order cross section predicted for γγ → qq, σ = 3 Σ eq4 · σγγ → μμ, is approached from above by the data at large transverse momenta. © 1981.
Published: 1981

223. PROPERTIES OF HADRON FINAL-STATES IN E+E- ANNIHILATION AT 13 GEV AND 17 GEV CENTER OF MASS ENERGIES

Author: E.E. Ronat, H. Hartmann, G. Knop, Rj Cashmore, E. Hilger, J. Proudfoot, O. Römer, W. Rühmer, Gl Salmon, R. Brandelik, D. Heyland, D.W. Schmitz, T. Meyer, W. Wallraff, P. J. Dornan, Kadansky, R. Rüsch, J. Ringel, R. Buhring, U. Kötz, A. Ladage, Walter Dr. Hillen, J. Pyrlik, R. Fohrmann, D. A. Garbutt, G. Peise, H. M. Fischer, Stephen Lloyd, H. Kowalski, H. Hultschig, D. Pandoulas, F. Roth, B. H. Wiik, John Hart, D. M. Binnie, Georg Zobernig, Sau Lan Wu, P. Schmüser, B. Jaax, Roger Barlow, M. Schliwa, N. A. Downie, W. Korbach, Quarrie, D. H. Saxon, U. Karshon, M. Wollstadt, C. Youngman, D. Notz, Gy. Wolf, Norbert Wermes, R. Riethmüller, H. L. Lynch, W. Chinowsky, A. Schultz von Dratzig, K. W. Bell, D. Lüke, G. Mikenberg, R. Wedemeyer, D. Trines, J. Rimkus, H. Boerner, H. U. Martyn, John Freeman, E. Kogan, M. Ogg, W. G. Jones, John Illingworth, P. L. Woodworth, A. Shapira, K. Gather, B. Löhr, P. Joos, B. Foster, W. Koch, G. Poelz, K. Lübelsmeyer, P. Söding, P. Lecomte, Y. Eisenberg, W. Braunschweig, H. G. Sander, D. Revel, and 0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum
Subjects: Physics, Nuclear and High Energy Physics, Particle physics, Annihilation, Electron–positron annihilation, Astrophysics::High Energy Astrophysical Phenomena, Quark model, Hadron, Elementary particle, 550 - Earth sciences, Jet (particle physics), Charged particle, Nuclear physics, High Energy Physics::Experiment, Center of mass, Nuclear Experiment
Abstract: We have observed e+e- hadrons at C.M. energies of 13 GeV and 17 GeV at PETRA using the TASSO detector. We find R(13 GeV) = 5.6 ± 0.7 and R(17 GeV) = 4.0 ± 0.7. The additional systematic uncertainty is 20%. Comparing inclusive charged hadron spectra we observe scaling between 5 GeV and 17 GeV for x = p/pbeam > 0.2; however the 13 GeV cross section is above the 17 GeV cross section for smaller x. This may be due to copious bb̄ production. The events become increasingly jet like at high energies as evidenced by a shrinking sphericity distribution with increasing energy. © 1979.
Published: 1979

224. Two-photon excitation of the tensor meson f0(1270)

Author: R.C.E. Devenish, Walter Dr. Hillen, G. Peise, R. Wedemeyer, R. J. Cashmore, T. Barklow, W. Koch, D. Trines, G. Poelz, S. Yarker, H. M. Fischer, P. Mättig, U. Karshon, Georg Zobernig, D. R. Quarrie, Y. Eisenberg, D. M. Binnie, U. Kötz, R. Riethmüller, C. Youngman, G. Rudolph, P. Joos, Ehud Duchovni, D. Pandoulas, B. Foster, D. G. Cassel, P. Koehler, D. A. Garbutt, S. Cooper, E. Wicklund, W. Braunschweig, D. Heyland, W. Wallraff, D.W. Schmitz, L. Köpke, John Freeman, M. Ogg, Hermann Kolanoski, J. K. Sedgbeer, P. Grossmann, Norbert Wermes, D. Notz, H. G. Sander, R. Rüsch, A. Shapira, O. Römer, Gl Salmon, M. Holder, K. Gather, K. Lübelsmeyer, P. Söding, P. J. Dornan, G. Mikenberg, I. Al-Agil, R. Beuselinck, H. Burkhardt, T. Meyer, M. Wollstadt, D. Revel, P. Schmüser, T. R. Wyatt, P. Lecomte, H. Hartmann, A. Ladage, R. Fohrmann, E. Hilger, J. Pyrlik, Stephen Lloyd, R. Brandelik, H. L. Lynch, A. Schultz von Dratzig, I. C. Brock, P. Leu, Gy. Wolf, D. Lüke, H. Boerner, W. G. Jones, H. U. Martyn, John Illingworth, P. L. Woodworth, J. Rimkus, H. Kowalski, K. W. Beli, J. Proudfoot, D. H. Saxon, E.E. Ronat, G. Knop, R. A. Stern, H. Hultschig, B. H. Wiik, John Hart, Sau Lan Wu, and F. J. Kirschfink
Subjects: Physics, Nuclear physics, Pair production, Physics and Astronomy (miscellaneous), Meson, Scattering, Invariant mass, Atomic physics, Engineering (miscellaneous), Excitation, Storage ring, Charged particle, Lepton
Abstract: We have measured charged particle pair production in two-photon scattering at the e+e- storage ring PETRA. While the main source of such events is the production of lepton pairs, the presence of an additional process is clearly indicated by the measured invariant mass distribution of the two particles and their angular distributions. We determine that the excess is mainly due to the decay f0(1270)→π+π-. We derive a width Γ(f0→γγ)=3.2±0.2±0.6 keV (statistical and systematic). © 1981 Springer-Verlag.
Published: 1981

225. Erratum to: Measurement of D ∗± meson production and determination of $F_{2}^{c\bar{c}}$ at low Q 2 in deep-inelastic scattering at HERA

Author: P. D. Thompson, S. Shushkevich, E. Barrelet, F. Moreau, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, A. Eliseev, H. J. Meyer, A. Baghdasaryan, A. Rostovtsev, V. Andreev, Paul Laycock, E. Malinovski, B. Stella, Peter Robmann, K. Daum, Emmanuel Sauvan, Stefan Schmitt, M. Dobre, G. Grindhammer, R. Plačakytė, D. P. C. Sankey, John A Coughlan, P. E. Reimer, Vladimir Palichik, G. Laštovička-Medin, J. Cvach, Christian Helebrant, Dusan Bruncko, Grzegorz Nowak, A. Dossanov, Dirk L. Hoffmann, Roland Horisberger, A. Valkárová, K. H. Hiller, R. C. W. Henderson, T. Toll, A. Petrukhin, J. C. Bizot, S. Backovic, K. Nowak, C. Niebuhr, J. Žáček, F. Huber, S. Egli, T. Greenshaw, Y. Soloviev, R. Felst, Stephen Maxfield, M. Herbst, Tomas Sykora, M. Sauter, Laurent Schoeffel, J. Ferencei, M. Kapichine, A. Specka, Voica Radescu, B. R. Grell, Christoph Grab, V. Brisson, Katerina Lipka, K. Urban, Anastasia Grebenyuk, Andrew Mehta, T. Ravdandorj, N. Gogitidze, Tomas Hreus, M. Kraemer, P. Kostka, Richard Polifka, A. Makankine, G. Buschhorn, V. Chekelian, F. D. Aaron, Jean-Arcady Meyer, M. P. J. Landon, S. Baghdasaryan, D. Ozerov, D. J. Fischer, Pavel A. Belov, A. W. Jung, J. Turnau, K. Begzsuren, M. Mudrinic, Mila Pandurovic, G. Herrera, Gabriel Stoicea, P. Van Mechelen, B. Tseepeldorj, Fabian Zomer, I. Tsakov, Maxime Gouzevitch, B. Pokorny, Zhen Zhang, Ricardo Lopez-Fernandez, H. U. Martyn, Matthias Klein, M. Steder, Wolfgang Lange, K. Müller, J. E. Olsson, W. Bartel, J. Zálešák, T. J. Sloan, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, Malte Hildebrandt, J. Gayler, Hannes Jung, Alexander Zhokin, V. Spaskov, P. Truöl, I. R. Kenyon, A. B. Meyer, M. Jacquet, E. E. Elsen, Natasa Raicevic, H. Pirumov, Vincent Boudry, M.-O. Boenig, A. N. Morozov, L. Goerlich, A. Fedotov, Z. Staykova, Emmanuelle Perez, K. B. Cantun Avila, C. Kiesling, H. Henschel, A. J. Campbell, S. M. Piec, Th. Naumann, Federico Alberto Ceccopieri, P. Pahl, E. Gabathuler, S. Habib, David South, K. Krüger, V. Lubimov, A. Dubak, L. N. Shtarkov, Y. Vazdik, C. Pascaud, C. Vallée, A. Lebedev, D. Haidt, V. Dodonov, L. Bystritskaya, E. Wünsch, J. Delvax, E. Rizvi, G. D. Patel, H. Zohrabyan, I. Bozovic-Jelisavcic, S. Levonian, J. V. Morris, Jenny List, V. Lendermann, A. Bunyatyan, Marina Rotaru, V. Cerny, Benno List, M. Brinkmann, Gerhard Brandt, Xavier Janssen, Leif J. Jönsson, Calin Alexa, S. Ghazaryan, D.K. Nikitin, M. Fleischer, Bogdan Povh, Ivan Smiljanic, F. Sefkow, D. Salek, T. Kluge, Karel Cerny, I. Picuric, J. G. Contreras, Guenter Eckerlin, André Schöning, Roman Kogler, P. Sopicki, A. M. Fomenko, Juraj Bracinik, A. Glazov, H-C. Schultz-Coulon, J. B. Dainton, J. Feltesse, Laurent Favart, Ilias Panagoulias, D. Traynor, I. Milcewicz-Mika, Paul Newman, Claus Kleinwort, U. Straumann, Daniel Pitzl, Jan Kretzschmar, B. Delcourt, Cristinel Diaconu, Pierre Marage, Daniel Britzger, E. Hennekemper, D. Wegener, T. H. Tran, and S. Mikocki
Subjects: Physics, Particle physics, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Bar (music), HERA, Deep inelastic scattering, 01 natural sciences, Nuclear physics, 0103 physical sciences, D meson, Physique des particules élémentaires, 010306 general physics, Engineering (miscellaneous)
Abstract: In the extraction of the charm contribution Fcc¯2 to the proton structure function F 2 in our recent publication [1], we have not properly taken into account the running of the electromagnetic coupling αem. The measured cross sections were corrected to the Born level for QED radiation, but not for the running of αem. This was not taken properly into account in the extraction of Fcc¯2., The European Physical Journal C, 72 (12), ISSN:1434-6044, ISSN:1434-6052
Full Text: View/download PDF

226. Scale influence on the energy dependence of photon-proton cross sections

Author: S Aid, M Anderson, V Andreev, B Andrieu, A Babaev, J Bähr, J Bán, Y Ban, P Baranov, E Barrelet, R Barschke, W Bartel, M Barth, U Bassler, H.P Beck, M Beck, H.-J Behrend, A Belousov, Ch Berger, G Bernardi, G Bertrand-Coremans, M Besançon, R Beyer, P Biddulph, P Bispham, J.C Bizot, V Blobel, K Borras, V Boudry, A Braemer, W Braunschweig, V Brisson, W Brückner, P Bruel, D Bruncko, C Brune, R Buchholz, L Büngener, J Bürger, F.W Büsser, A Buniatian, S Burke, M.J Burton, D Calvet, A.J Campbell, T Carli, M Charlet, D Clarke, A.B Clegg, B Clerbaux, S Cocks, J.G Contreras, C Cormack, J.A Coughlan, A Courau, M.-C Cousinou, G Cozzika, L Criegee, D.G Cussans, J Cvach, S Dagoret, J.B Dainton, W.D Dau, K Daum, M David, C.L Davis, B Delcourt, A De Roeck, E.A De Wolf, M Dirkmann, P Dixon, P Di Nezza, W Dlugosz, C Dollfus, K.T Donovan, J.D Dowell, H.B Dreis, A Droutskoi, O Dünger, H Duhm, J Ebert, T.R Ebert, G Eckerlin, V Efremenko, S Egli, R Eichler, F Eisele, E Eisenhandler, E Elsen, M Erdmann, W Erdmann, A.B Fahr, L Favart, A Fedotov, R Felst, J Feltesse, J Ferencei, F Ferrarotto, K Flamm, M Fleischer, M Fleiser, G Flügge, A Fomenko, J Formánek, J.M Foster, G Franke, E Fretwurst, E Gabathuler, K Gabathuler, F Gaede, J Garvey, J Gayler, M Gebauer, H Genzel, R Gerhards, A Glazov, L Goerlich, N Gogitidze, M Goldberg, D Goldner, K Golec-Biernat, B Gonzalez-Pineiro, I Gorelov, C Grab, H Grässler, T Greenshaw, R.K Griffiths, G Grindhammer, A Gruber, C Gruber, T Hadig, D Haidt, L Hajduk, T Haller, M Hampel, W.J Haynes, B Heinemann, G Heinzelmann, R.C.W Henderson, H Henschel, I Herynek, M.F Hess, K Hewitt, W Hildesheim, K.H Hiller, C.D Hilton, J Hladký, M Höppner, D Hoffmann, T Holtom, R Horisberger, V.L Hudgson, M Hütte, M Ibbotson, H Itterbeck, A Jacholkowska, C Jacobsson, M Jaffre, J Janoth, D.M Jansen, T Jansen, L Jönsson, D.P Johnson, H Jung, P.I.P Kalmus, M Kander, D Kant, R Kaschowitz, U Kathage, J Katzy, H.H Kaufmann, O Kaufmann, M Kausch, S Kazarian, I.R Kenyon, S Kermiche, C Keuker, C Kiesling, M Klein, C Kleinwort, G Knies, T Köhler, J.H Köhne, H Kolanoski, S.D Kolya, V Korbel, P Kostka, S.K Kotelnikov, T Krämerkämper, M.W Krasny, H Krehbiel, D Krücker, H Küster, M Kuhlen, T Kurča, J Kurzhöfer, D Lacour, B Laforge, M.P.J Landon, W Lange, U Langenegger, A Lebedev, F Lehner, S Levonian, G Lindström, M Lindstroem, F Linsel, J Lipinski, B List, G Lobo, P Loch, J.W Lomas, G.C Lopez, V Lubimov, D Lüke, L Lytkin, N Magnussen, E Malinovski, R Maraček, P Marage, J Marks, R Marshall, J Martens, G Martin, R Martin, H.-U Martyn, J Martyniak, T Mavroidis, S.J Maxfield, S.J McMahon, A Mehta, K Meier, F Metlica, A Meyer, H Meyer, J Meyer, P.-O Meyer, A Migliori, S Mikocki, D Milstead, J Moeck, F Moreau, J.V Morris, E Mroczko, D Müller, G Müller, K Müller, P Murín, V Nagovizin, R Nahnhauer, B Naroska, Th Naumann, I Négri, P.R Newman, D Newton, H.K Nguyen, T.C Nicholls, F Niebergall, C Niebuhr, Ch Niedzballa, H Niggli, G Nowak, G.W Noyes, T Nunnemann, M Nyberg-Werther, M Oakden, H Oberlack, J.E Olsson, D Ozerov, P Palmen, E Panaro, A Panitch, C Pascaud, G.D Patel, H Pawletta, E Peppel, E Perez, J.P Phillips, A Pieuchot, D Pitzl, G Pope, B Povh, S Prell, K Rabbertz, G Rädel, P Reimer, S Reinshagen, H Rick, F Riepenhausen, S Riess, E Rizvi, S.M Robertson, P Robmann, H.E Roloff, R Roosen, K Rosenbauer, A Rostovtsev, F Rouse, C Royon, K Rüter, S Rusakov, K Rybicki, D.P.C Sankey, P Schacht, S Schiek, S Schleif, P Schleper, W von Schlippe, D Schmidt, G Schmidt, A Schöning, V Schröder, E Schuhmann, B Schwab, F Sefkow, R Sell, A Semenov, V Shekelyan, I Sheviakov, L.N Shtarkov, G Siegmon, U Siewert, Y Sirois, I.O Skillicorn, P Smirnov, V Solochenko, Y Soloviev, A Specka, J Spiekermann, S Spielman, H Spitzer, F Squinabol, P Steffen, R Steinberg, H Steiner, J Steinhart, B Stella, A Stellberger, J Stier, J Stiewe, U Stößlein, K Stolze, U Straumann, W Struczinski, J.P Sutton, S Tapprogge, M Taševský, V Tchernyshov, S Tchetchelnitski, J Theissen, C Thiebaux, G Thompson, R Todenhagen, P Truöl, G Tsipolitis, J Turnau, J Tutas, E Tzamariudaki, P Uelkes, A Usik, S Valkár, A Valkárová, C Vallée, D Vandenplas, P Van Esch, P Van Mechelen, Y Vazdik, P Verrecchia, G Villet, K Wacker, A Wagener, M Wagener, B Waugh, G Weber, M Weber, D Wegener, A Wegner, T Wengler, M Werner, L.R West, T Wilksen, S Willard, M Winde, G.-G Winter, C Wittek, M Wobisch, E Wünsch, J Žáček, D Zarbock, Z Zhang, A Zhokin, P Zini, F Zomer, J Zsembery, K Zuber, and M ZurNedden
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Photon, FOS: Physical sciences, HERA, Charged particle, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), Transverse momentum, High Energy Physics::Experiment, Nuclear Experiment, Phenomenology (particle physics)
Abstract: The scale dependence of the evolution of photoproduction cross sections with the photon-proton centre of mass energy W is studied using low Q^2 < 0.01 GeV^2 e^+p interactions collected by the H1 experiment at HERA. The value of the largest transverse momentum of a charged particle in the photon fragmentation region is used to define the hard scale. The slope of the $W$ dependence of the cross section is observed to increase steeply with increasing transverse momentum. The result is compared to measurements of the Q^2 evolution of the W dependence of the virtual photon-proton cross section. Interpretations in terms of QCD and in terms of Regge phenomenology are discussed., 13 pages, latex, 3 Figures

227. Experimental study of hard photon radiation processes at Hera

Author: C. Cormack, Alan Campbell, E. M. Hanlon, U. Stsslein, G. G. Winter, Wolfgang Lange, G. Grindhammer, P. Steffen, V. Lubimov, G. Siegmon, Frank Raupach, K. Rosenbauer, S. M. Robertson, R. Beyer, F. Moreau, J. D. Dowell, E. Malinovskii, D. Zarbock, D. Schmidt, K. Rter, Daniel Pitzl, N. Wulff, P. Kasselmann, M. Jaffré, G. Thompson, J. Buerger, Peter Schacht, B. Stella, H. P. Wellisch, Max Weber, L. N. Shtarkov, A. Jacholkowska, N. Magnussen, S. K. Kotelnikov, T. Krmerkmper, J. Gayler, K. Gabathuler, A. Buniatian, D. Wegener, W.J. Haynes, L. Hajduk, S. Aid, U P. Krger, N. Sahlmann, G. Villet, Gregorio Bernardi, V. Boudry, Pierre Marage, J. Feltesse, A. Courau, A. Panitch, M. W. Krasny, Peter Loch, Armen Vartapetian, Axel Lindner, R. Marshall, E. Schuhmann, Anton Babaev, Didier Lacour, G. Pope, Martin Erdmann, J. V. Morris, G. Schmidt, F. R. Rouse, V. Efremenko, A. Droutskoi, U. Obrock, J. G. Contreras, C. Thiebaux, J. Strachota, K. Gamerdinger, H. Krehbiel, E. Wnsch, H. J. Behrend, J.C. Bizot, M. Goldberg, R. Nisius, R. Grssler, G. Buschhorn, F. Niebergall, V. Korbel, M. Forbush, M. Htte, A. Schwind, M. A. Jabiol, E. Evrard, Max Klein, S. Mikocki, H. E. Roloff, K. Johannsen, K. C. Hoeger, S. Eichenberger, Carl R. Brune, M. Barth, Zhen Zhang, Vladimir Andreev, J. M. Foster, Christophe Royon, C. Niebuhr, A A. Akhundov, B. Schwab, V. Brisson, T. Jansen, H. Rick, R. Kaschowitz, Roland Horisberger, S. Riess, Steve McMahon, Dave Sankey, S. Egli, S. Valkr, T. P. Yiou, U. Bassler, R. Buchholz, D. Mercer, J. R. Smith, D. Goldner, L. Buengener, F. Linsel, P. A. Smirnov, K. Meier, G. Bertrand-Coremans, Tim Greenshaw, S. Levonian, A. Wegner, B. Naroska, V. L. Hudgson, G. D. Patel, Winston Ko, B. Delcourt, M. Kuhlen, V. Riech, A. Usik, H. Meyer, H. Grssler, M. Hampel, B. Kuznik, Stefan Tapprogge, E. Panaro, M. Savitsky, D.P. Johnson, Hans Peter Beck, H. Lohmander, A. Walther, J. Heatherington, S. Masson, K. Zuber, T. Kurca, M. Wagener, C. Pascaud, L. Criegee, D. Newton, P. Hill, I. W. Walker, V. Chernyshov, J. E. Olsson, W. Bartel, G. Mller, Christoph Grab, Laurent Favart, R. Eichler, C. Leverenz, C. Dollfus, Guenter Eckerlin, S. Rusakov, L. Grlich, M. Hapke, J. P. Kubenka, R. Nahnhauer, M. Hess, Ulrich Goerlach, Ph. Huet, Ch. Pichler, W. Zimmermann, P. Ribarics, J. Baehr, R. Felst, J. Bán, T. Ahmed, E. Barrelet, E. Mroczko, M. Gebauer, D. Kant, K. Flamm, David Cussans, A. Mavroidis, K. Stephens, E. Peppel, V. Nagovitsin, O. Dnger, G. Rdel, Kerstin Borras, R. M. Martin, W. Braunschweig, G. W. Noyes, P. Lanius, T. C. Nicholls, A. Gellrich, R. Sell, S. Kazarian, F. Lamarche, K. H. Hiller, R. C. W. Henderson, M. Hppner, A. Lebedev, J. Cvach, M. Oakden, L. Jnsson, M. Rietz, U. Siewert, P. Verrecchia, E. Snchez, P. I. P. Kalmus, G C. Lpez, E. A. De Wolf, Ch. Berger, M. Zimmer, G. Cozzika, F. Eisele, J. Janoth, E. Eisenhandler, R. Gerhards, R. J. Ellison, Jean-Francois Laporte, D. Haidt, G. Lindstrm, J. Tutas, Eram Rizvi, I. R. Kenyon, G. Heinzelmann, A. Semenov, Hermann Kolanoski, D. Clarke, John A Coughlan, H. H. Kaufmann, K. Mller, J.P. Phillips, C. A. Meyer, H. U. Martyn, A. Braemer, S. Dagoret, Volker Blobel, Paul Newman, C. Keuker, Judith Katzy, A. Valkrov, J. Spiekermann, H. Spitzer, M. Fleischer, R. Prosi, V. Schrder, A. Gruber, Roland Bernet, J. Formnek, Horst Oberlack, I. Herynek, A. Schning, R. Maraček, J-P. Meyer, B. Gonzalez-Pineiro, Hannes Jung, Alexander Zhokin, V I. Shekelyan, K. Wacker, R. Steinberg, W. von Schlippe, R. Starosta, T. Merz, M. Ibbotson, P. Baranov, S. Mani, Tancredi Carli, Stephen Burke, Yu. Solovev, F. Brasse, F W. Bsser, H. Shooshtari, Grzegorz Nowak, J. Martens, E. Prez, F. Kole, U. Seehausen, M. Korn, J. Riedlberger, Dusan Bruncko, F. Ferrarotto, G. Flgge, R. L. Lander, U. Krner-Marquis, H. Genzel, C. Jacobsson, Michael Seidel, J. Khne, F. Sefkow, Benno List, F. Charles, Barbara Clerbaux, Ch. Ley, Peter Schleper, H. Kster, D. Lke, J. Ferencei, P. Van Esch, J. Garvey, A. M. Fomenko, P. Murn, R. Taylor, J. Turnau, P. Trul, E. Elsen, J. Marks, A. Rostovtsev, J. P. Sutton, Claus Kleinwort, W.D. Dau, F. Zomer, J. B. Dainton, G. Weber, M. Steenbock, U. Straumann, B. Andrieu, M. J. Burton, A. Wagener, U. Kathage, E. Gabathuler, Marc Besancon, C. Vallée, H. K. Nguyen, A.S. Belousov, I. V. Gorelov, J. Zcek, Ch. Coutures, W. Struczinski, Stephen Maxfield, J. Stiewe, J. Kurzhfer, A. B. Clegg, R. Rylko, Andrew Mehta, N. Gogitidze, R. D. Appuhn, Yves Sirois, M. Vecko, J. Lipinski, J. Ebert, G. Franke, H. Hufnagel, C. Gruber, S. Kermiche, P. Goritchev, D. Dllmann, C.D. Hilton, Mikhail Danilov, R. Roosen, J. Duboc, D. Neyret, T. Khler, J. Martyniak, B. Fominykh, Eckhart Fretwurst, S. Reinshagen, C. Kiesling, M. Arpagaus, K. Rybicki, Wolfram Erdmann, D. Feeken, W. Hildesheim, M. Colombo, S. Willard, Murrough Landon, A. E. Wright, M. Winde, P. Uelkes, L. Johnson, H. Itterbeck, P. Van Mechelen, H. Erlichmann, O. Hamon, K. Daum, G. Knies, S. Schiek, J. Haack, I. O. Skillicorn, H. B. Dreis, M. Nyberg-Werther, T. R. Ebert, A. Fedotov, A. De Roeck, H. Henschel, H. Bergstein, S. D. Kolya, Th. Naumann, H. Duhm, E. Deffur, P. Kostka, M. David, M. Flieser, J. Stier, Y. Vazdik, L.R. West, David Milstead, S. Prell, Jan Hladky, I. Shevyakov, C. Schmidt, P. Di Nezza, Peter Robmann, L. Del Buono, F. Botterweck, D. Krcker, P. E. Reimer, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Physics, Particle physics, Photon, Luminosity (scattering theory), Physics and Astronomy (miscellaneous), Proton, 010308 nuclear & particles physics, Compton scattering, Bremsstrahlung, Elementary particle, HERA, 01 natural sciences, 7. Clean energy, law.invention, Nuclear physics, law, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, 010306 general physics, Collider, Engineering (miscellaneous)
Abstract: We present an experimental study of theep→eγ+p andep→eγ+X processes using data recorded by the H1 detector in 1993 at the electron-proton collider HERA. These processes are employed to measure the luminosity with an accuracy of 4.5 %. A subsample of theep→eγ+X events in which the hard photon is detected at angles θγ′ ≤ 0.45 mrad with respect to the incident electron direction is used to verify experimentally the size of radiative corrections to theep→eX inclusive cross section and to investigate the structure of the proton in theQ2 domain down to 2 GeV2, lower than previously attained at HERA.

228. A SEARCH FOR LEPTOQUARKS AND SQUARKS AT HERA

Author: H. Bergstein, Th. Naumann, Daniel Pitzl, Wolfram Erdmann, H. Duhm, S. K. Kotelnikov, N. Magnussen, L. Hajduk, E. Gabathuler, N. Sahlmann, E. Deffur, P. Kostka, E. Schuhmann, T. Ahmed, J. Duboc, B. Stella, E. Malinovski, M. Kuhlen, G. Grindhammer, P. Biddulph, M. David, Didier Lacour, G. Müller, Armen Vartapetian, M. Colombo, P. Baranov, M. Fleischer, M. A. Jabiol, J. Riedlberger, D. Feeken, G. Pope, Peter Schleper, Carl R. Brune, M. Barth, Marc Besancon, A.S. Belousov, A. Lindner, J. Janoth, Sergey Rusakov, P. Truöl, Murrough Landon, A. E. Wright, Volker Blobel, R. Eichler, C. Keuker, J. Stier, K. C. Hoeger, D. Lüke, J. Marks, E. Wünsch, Y. Vazdik, Dave Sankey, U. Bassler, G. D. Patel, H. Meyer, L.R. West, R. J. Ellison, J. Martens, F. Kole, David Schmidt, H. Itterbeck, P. Van Mechelen, S. Eichenberger, V. Riech, R. Maraček, W. von Schlippe, K. Gabathuler, A. Buniatian, D. Wegener, R. Starosta, J. V. Morris, G. Schmidt, M. Forbush, A. Schwind, A. Lebedev, S. Egli, M. Rietz, D. Haidt, G. Heinzelmann, F. Charles, H. Küster, T. Merz, W.J. Haynes, P. Ribarics, R. Felst, U. Seehausen, F. Sefkow, M. Nyberg-Werther, T. Köhler, M. W. Krasny, Peter Robmann, M. F. Hess, S. Tapprogge, Mikhail Danilov, R. Roosen, T. R. Ebert, S. Reinshagen, J. Martyniak, W.D. Dau, J. B. Dainton, K. Stephens, E. Peppel, I. Sheviakov, A. Fedotov, Günter Flügge, T. P. Yiou, J. Turnau, C. Kiesling, U. Krüger, B. Fominykh, Emmanuelle Perez, V. Efremenko, S. Mikocki, M. Steenbock, A. De Roeck, A. J. Campbell, Eckhart Fretwurst, M. Flieser, H. Krehbiel, Richard E. Taylor, S. Dagoret, P. Goritchev, T. Kurča, L. N. Shtarkov, J. Feltesse, G. Buschhorn, B. Andrieu, O. Dünger, K. Gamerdinger, J. Ferencei, V I. Shekelyan, A. Panitch, Frank Raupach, G. Bertrand-Coremans, F. Botterweck, D. Neyret, K. Wacker, K. Rüter, C. Niebuhr, S. M. Robertson, S. Willard, R. Steinberg, T. Mavroidis, K. Rosenbauer, I. Tichomirov, D. Goldner, L. Criegee, Y. Soloviev, J. M. Foster, N. Wulff, R. Buchholz, David Milstead, P. A. Smirnov, J. Formánek, M. Savitsky, Wolfgang Lange, C. A. Meyer, J. Žáček, J. Garvey, M. Gebauer, H. E. Roloff, P. Kasselmann, B. Gonzalez-Pineiro, H. Hufnagel, G. Thompson, Dusan Bruncko, K. Zuber, M. Arpagaus, A. Gruber, M. Winde, B. Naroska, J. Gayler, P. Uelkes, Martin Erdmann, F. Ferrarotto, D. Düllmann, A. M. Fomenko, C.D. Hilton, J.G. Contreras, L. Johnson, U. Obrock, Daniel Johnson, H. Genzel, J. Cvach, H. Henschel, Leif J. Jönsson, H. J. Behrend, J.C. Bizot, M. Goldberg, F. Niebergall, L. Goerlich, E. Evrard, E. Sanchez, T. Greenshaw, R. L. Lander, H. Lohmander, K. Daum, J.P. Phillips, S. Mani, G. Villet, Pierre Marage, Stephen Maxfield, B. Delcourt, J. Stiewe, U. Stösslein, Vincent Hedberg, H. P. Beck, Stephen Burke, G. Knies, Rosario Martín, A. B. Clegg, R. Rylko, C. Leverenz, Andrew Mehta, S. Schiek, R. Marshall, N. Gogitidze, Dirk Krücker, O. Hamon, J. Haack, P. Van Esch, I. O. Skillicorn, H. B. Dreis, Zhen Zhang, A. Courau, A. Rostovtsev, R. Bernet, S. Kermiche, H. Shooshtari, R. Nisius, J. R. Smith, R. Herma, E. Eisenhandler, J. P. Sutton, Claus Kleinwort, J. Ebert, S. Levonian, M. Wagener, Ch. Ley, A. Walther, A. Usik, K. Flamm, A. Wegner, A. Gellrich, W. Zimmermann, P. I. P. Kalmus, J. Baehr, E. Panaro, J. Kurzhöfer, A. Wagener, J. D. Dowell, F. Lamarche, M. Jaffre, J. E. Olsson, V. Nagovizin, A. Braemer, R. Kaschowitz, W. Bartel, W. Hildesheim, J. P. Kubenka, Roland Horisberger, H. K. Nguyen, I. V. Gorelov, K. Müller, A. Valkárová, R. Grässler, Ch. Coutures, W. Struczinski, H. U. Martyn, Matthias Klein, F. W. Büsser, Hermann Kolanoski, D. Clarke, S. Riess, W. Braunschweig, G. W. Noyes, H. Spitzer, John A Coughlan, R. Sell, Horst Oberlack, I. R. Kenyon, S. Kazarian, K. Johannsen, U. Siewert, F. Zomer, A. M. Goodall, Christophe Royon, M. Zimmer, L. Del Buono, Vincent Boudry, P. Hill, Jean-Francois Laporte, V. Andreev, J. Bán, Winston Ko, C. Pascaud, Guenter Eckerlin, H. Ehrlichmann, André Schöning, Yves Sirois, C. Vallée, R. D. Appuhn, J. Lipinski, G. Franke, U. Krüner-Marquis, T. Jansen, G. Rädel, M. Hampel, B. Kuznik, Ph. Huet, Steve McMahon, Ch. Pichler, G. Lindström, C. Gruber, Paul Newman, Grzegorz Nowak, S. Aid, M. Korn, C. Jacobsson, D. Kant, G. Weber, U. Straumann, Kerstin Borras, A. Semenov, F. Linsel, J. Heatherington, M. Vecko, D. Newton, U. Kathage, D. Mercer, F. Brasse, V. Brisson, S. Masson, K. H. Hiller, M. Hapke, R. Nahnhauer, R. C. W. Henderson, P. Lanius, E. Barrelet, David Cussans, Markus Seidel, V. Tchernyshov, E. A. De Wolf, Ch. Berger, Karlheinz Meier, L. Büngener, V. Korbel, J. Tutas, J. D. Burger, I. Herynek, Jean-Arcady Meyer, Benno List, R. Gerhards, R. Prosi, G. Cozzika, F. Eisele, Stefan Valkar, G. Siegmon, Hannes Jung, R. Beyer, F. Moreau, J. Hladký, A. Jacholkowska, S. D. Kolya, P. Loch, P. E. Reimer, E. M. Hanlon, G. G. Winter, P. Verrecchia, V. Schröder, P. Steffen, H. H. Kaufmann, Eckhard Elsen, Peter Schacht, G. C. Lopez, D. Zarbock, H. P. Wellisch, Max Weber, Gregorio Bernardi, T. Carli, Anton Babaev, C. Thiebaux, I. W. Walker, J. Strachota, K. Rybicki, Christoph Grab, B. Schwab, Pavel Murin, H. Grässler, M. Ibbotson, Laurent Favart, C. Dollfus, F. Rouse, M. Höppner, S. Prell, Ulrich Goerlach, C. Schmidt, and P. Di Nezza
Subjects: Physics, Quark, Particle physics, Physics and Astronomy (miscellaneous), High Energy Physics::Phenomenology, Scalar (mathematics), Elementary particle, HERA, Standard Model, Nuclear physics, Particle decay, Grand Unified Theory, High Energy Physics::Experiment, Invariant mass, Engineering (miscellaneous)
Abstract: A search in the H1 experiment at HERA for scalar and vector leptoquarks, leptogluons and squarks coupling to first generation fermions is presented in a data sample corresponding to an integrated luminosity of 425 nb−1. For masses ranging up to ∼275 GeV, no significant evidence for the direct production of such particles is found in various possible decay channels. At high masses and beyond the centre of mass energy of 296 GeV a contact interaction analysis is used to further constrain the couplings and masses of new vector leptoquarks and to set lower limits on compositeness scales.

229. Measurement of the cross section for diffractive deep-inelastic scattering with a leading proton at HERA

Author: F. Huber, J. E. Olsson, Hans-Christian Schultz-Coulon, V. Andreev, Tomas Hreus, W. Bartel, Fabian Zomer, Christian Helebrant, Dirk L. Hoffmann, J. C. Bizot, Malte Hildebrandt, P. E. Reimer, E. Wuensch, Katerina Lipka, Paul Laycock, D. Wegener, Grzegorz Nowak, M. Jacquet, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, E. E. Elsen, T. H. Tran, S. Shushkevich, A. Dossanov, Sakar Osman, A. Petrukhin, I. R. Kenyon, M. Kraemer, V. Efremenko, K. Daum, A. Nikiforov, A. Eliseev, Natasa Raicevic, J. Feltesse, S. Mikocki, B. Stella, Hannes Jung, Emmanuelle Perez, Stefan Schmitt, Judith Katzy, V. Brisson, Alexander Zhokin, Andre Schoening, I. Bozovic-Jelisavcic, M. Herbst, A. Makankine, A. N. Morozov, P. Truoel, R. Placakyte, Richard Polifka, M. Dobre, G. Buschhorn, M. Deak, S. M. Piec, Laurent Schoeffel, B. Tseepeldorj, E. Barrelet, P. D. Thompson, Y. Vazdik, D. Ozerov, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, Roland Horisberger, V. Lendermann, A. Valkárová, Zhen Zhang, G. Thompson, Ricardo Lopez-Fernandez, A. D.R. Vargas Trevino, Z. Staykova, S. Habib, D. J. Fischer, V. Chekelian, F. D. Aaron, Daniel Britzger, E. Hennekemper, Th. Naumann, H. Henschel, M. Steder, R. Kogler, J. Ferencei, P. Pahl, Anna Kropivnitskaya, E. Gabathuler, R. Felst, S. Levonian, Vladimir Palichik, M. Kapichine, K. Urban, Murrough Landon, J-P. Meyer, B. R. Grell, B. Pokorny, Matthias Ulrich Mozer, A. Fedotov, T. J. Sloan, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, Wolfgang Lange, K. B. Cantun Avila, F. Moreau, C. Kiesling, K. Mueller, A. J. Campbell, L. Bystritskaya, J. Gayler, Federico Alberto Ceccopieri, Dusan Bruncko, P. Van Mechelen, Maxime Gouzevitch, P. Kostka, L. Goerlich, H. Zohrabyan, H. Pirumov, V. Lubimov, T. Toll, Gabriel Stoicea, Krzysztof Kutak, J. Turnau, T. Greenshaw, T. Kluge, N. Loktionova, K. H. Hiller, A. Dubak, Peter Robmann, R. C. W. Henderson, K. Begzsuren, M. Mudrinic, L. N. Shtarkov, Gerhard Brandt, I. Tsakov, I. Picuric, T. Ravdandorj, A. Rostovtsev, S. Backovic, A. Specka, Xavier Janssen, V. Cerny, Guenter Eckerlin, Benno List, Mila Pandurovic, J. Zálešák, John A Coughlan, V. Spaskov, G. Laštovička-Medin, A. B. Meyer, H. U. Martyn, A. Knutsson, P. Sopicki, A. M. Fomenko, M. Brinkmann, M. Fleischer, J. Cvach, Bogdan Povh, F. Sefkow, K. Nowak, Stephen Maxfield, I. Milcewicz-Mika, Andrew Mehta, N. Gogitidze, Juraj Bracinik, J. B. Dainton, A. W. Jung, Ilias Panagoulias, G. Herrera, Max Klein, D. Traynor, M. Sauter, David M. South, A. Baghdasaryan, C. Niebuhr, S. Egli, Paul Newman, Y. Soloviev, Claus Kleinwort, U. Straumann, K. Krueger, J. Zacek, Voica Radescu, Christoph Grab, Anastasia Grebenyuk, Calin Alexa, S. Ghazaryan, Leif J. Jönsson, D.K. Nikitin, Karel Cerny, Dave Sankey, J. Delvax, M. von den Driesch, G. D. Patel, H. Meyer, A. Glazov, T. Sykora, C. Pascaud, C. Vallée, A. Lebedev, Laurent Favart, D. Haidt, Eram Rizvi, V. Dodonov, J. V. Morris, Jenny List, A. Bunyatyan, Marina Rotaru, Ivan Smiljanic, D. Salek, V. Boudry, J. G. Contreras, Daniel Pitzl, Jan Kretzschmar, B. Delcourt, Pierre Marage, D. Sunar, A. Cholewa, Cristinel Diaconu, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, H1 Collaboration (ukupan broj autora: 219), H1 Collaboration, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), and Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)
Subjects: Physics, Particle physics, Photon, Physics and Astronomy (miscellaneous), 010308 nuclear & particles physics, Scattering, Perturbative QCD, Parton, HERA, Deep inelastic scattering, 01 natural sciences, Nuclear physics, Pomeron, Distribution function, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Physics::Accelerator Physics, ddc:530, High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous)
Abstract: The cross section for the diffractive deep-inelastic scattering process ep - GT eXp is measured, with the leading final state proton detected in the H1 Forward Proton Spectrometer. The data sample covers the range x(P) LT 0.1 in fractional proton longitudinal momentum loss, 0.1 LT vertical bar t vertical bar LT 0.7 GeV2 in squared four-momentum transfer at the proton vertex and 4 LT Q(2) LT 700 GeV2 in photon virtuality. The cross section is measured four-fold differentially in t, x(P), Q2 and beta = x/x(P), where x is the Bjorken scaling variable. The t and x(P) dependences are interpreted in terms of an effective pomeron trajectory and a sub-leading exchange. The data are compared with perturbative QCD predictions at next-to-leading order based on diffractive parton distribution functions previously extracted from complementary measurements of inclusive diffractive deep-inelastic scattering. The ratio of the diffractive to the inclusive ep cross section is studied as a function of Q(2), beta and x(P).

230. Diffractive photoproduction of psi(2S) mesons at HERA

Author: S. Hengstmann, J-P. Meyer, I. R. Kenyon, B. Stella, Stefan Schmitt, Ç. İşsever, T. Wilksen, V. Jemanov, H. Spitzer, P. Kjellberg, S. Levonian, Paul Richard Newman, Grzegorz Nowak, A. Vest, J. Kroseberg, F. Zomer, K. H. Hiller, L. Goerlich, I. Foresti, G. Cozzika, F. Eisele, C. Risler, H. U. Martyn, C. Beier, R. C. W. Henderson, Martin Erdmann, Paul Laycock, E. Malinovski, F. Niebergall, M. Hildebrandt, S. Hurling, J.P. Phillips, Stefan Valkar, R. Koutouev, A. Petrukhin, B. Leissner, R. Pöschl, A. Jacquet, V. Andreev, W. Brückner, V. Shekelyan, R. Lemrani, P. Kostka, G. Grindhammer, J. Dingfelder, S. Mangano, G. Radel, H.-B. Bröker, Hannes Jung, Alexander Zhokin, D.P. Brown, J. Haller, F. Keil, G. Nellen, J. Turnau, Laurent Schoeffel, J. Becker, C. Vallée, R. Heremans, A. Specka, C. Duprel, N. Werner, T. Kuhr, Dusan Bruncko, Murrough Landon, Ewelina Lobodzinska, Yves Sirois, E. Eisenhandler, S. Baumgartner, J. V. Morris, A. Bunyatyan, A. Rostovtsev, G. Buschhorn, B. Andrieu, M. Fleischer, D. Ozerov, B. Naroska, A. Droutskoi, Max Klein, R. Felst, J. Kennedy, V. Brisson, S. Vassiliev, D. Kant, Zhen Zhang, G. Thompson, T. Hadig, T. Greenshaw, Wolfgang Lange, G. Franke, Roland Horisberger, A. Valkárová, J. Gayler, M.N. Mondragon, Leif J. Jönsson, P. Höting, R. Maraček, D. Hoffmann, Andreas Meyer, D. Meer, H. Henschel, P. Van Mechelen, J.C. Bizot, R. Stamen, Rainer Wallny, K. Sedlák, S. Udluft, Martin Karlsson, E. Gabathuler, Y. H. Fleming, David Milstead, P. A. Smirnov, J. Ferencei, J. Naumann, J. Marks, Bogdan Povh, A. Astvatsatourov, M. Lindstroem, T. Kluge, A. Usik, G. Frising, Claus Kleinwort, B. Reisert, J. Bähr, J. Formánek, D. Lüke, S. Luders, A. Schöning, E. Wünsch, T. Laštovička, V. Lubimov, E. Barrelet, Peter Robmann, S. Schmidt, Dave Sankey, C. Niebuhr, S. Egli, K. Daum, H. Meyer, F. Tomasz, R. Demirchyan, J. Zacek, S. Wiesand, G. Tsipolitis, M. Hilgers, J. Garvey, Xavier Janssen, M. Kapichine, A. Koutov, B. Delcourt, Glenn J. White, Y. Soloviev, D. Clarke, E. A. De Wolf, Ch. Berger, Karlheinz Meier, R. Roosen, G. Knies, Matthew Jones, A. M. Fomenko, P. Dixon, G. D. Patel, S. Ferron, Hans-Christian Schultz-Coulon, F. Moreau, J. D. Dowell, B. Lobodzinski, K. Gabathuler, A. Vichnevski, D. Wegener, John A Coughlan, L. Lytkin, F. P. Schilling, D.P. Johnson, I. Herynek, Cristinel Diaconu, E. Lebailly, C. Gerlich, T. Schorner, N. Malden, N. Delerue, O. Karschnick, David Schmidt, W.J. Haynes, Caroline Collard, A. Dubak, S. D. Kolya, M. Jaffre, J. E. Olsson, Daniel Pitzl, Markus Wobisch, Anton Babaev, K. Rybicki, L. N. Shtarkov, W. Bartel, V. Nagovizin, J. Scheins, D. South, J. G. Contreras, A. Lebedev, V. Lendermann, F. Sefkow, D. Traynor, Y. R. Coppens, E.-E. Woehrling, F. W. Büsser, W. Braunschweig, F. Cassol-Brunner, S. K. Kotelnikov, R. Eichler, Christoph Grab, D. Haidt, T. Berndt, A. Burrage, R. Marshall, Wolfram Erdmann, V. Panassik, B. List, P.-O. Meyer, Y. Vazdik, P.D. Thompson, S. Tchetchelnitski, M. Schneider, M. Peez, Vincent Boudry, A. N. Morozov, Pavel Murin, H. Grässler, Jan Hladky, I. Strauch, V. Efremenko, B. Koblitz, W.D. Dau, J. B. Dainton, L. Hajduk, M. Urban, Eram Rizvi, G. Heinzelmann, V. Dodonov, Beate Heinemann, C. Pascaud, Guenter Eckerlin, S. Mikocki, Pierre Marage, Philipp Fleischmann, A. Beglarian, S. Mohrdieck, M. Ibbotson, M. Beckingham, O. Behnke, I. Sheviakov, Doris Eckstein, A. Loginov, Laurent Favart, T. Anthonis, A. Fedotov, Günter Flügge, C. Kiesling, V. Spaskov, V. Grabski, A.C. Wyatt, A. De Roeck, E. Tzamariudaki, A. J. Campbell, K. Wacker, S. Ghazaryan, T. Kurča, S. Schatzel, M. Davidsson, B. Waugh, G. Weber, U. Straumann, Thomas Naumann, I. Malinovski, J. Wagner, S. Caron, J. Böhme, M. Winde, A. Uraev, N. Keller, V. Schröder, Eckhard Elsen, C. Wissing, L. Janauschek, V. Korbel, I. Potachnikova, Katja Krüger, C. Werner, M. Swart, D. Lamb, M. zur Nedden, L. Bystritskaya, J. Cvach, J. Zalesak, J. Martyniak, K. Müller, Christian Schwanenberger, Stephen Maxfield, J. Stiewe, M. C. Cousinou, Andrew Mehta, N. Gogitidze, C. Johnson, M. Wessels, M. Ellerbrock, G. Herrera, J.E. Turney, Bradley Cox, P. Baranov, Peter Schleper, T. J. Sloan, P.J.W. Faulkner, A.S. Belousov, Sergey Rusakov, P. Truöl, J. Rauschenberger, N. Loktionova, J. Gassner, S. Kermiche, C. Adloff, A. Hovhannisyan, I. Tsurin, E. Perez, R. Gerhards, P. E. Reimer, G. G. Winter, O. Nix, Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1 Collaboration, and Kerec, Hélène
Subjects: Diffraction, Physics, Nuclear and High Energy Physics, Particle physics, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], Meson, 010308 nuclear & particles physics, Momentum transfer, Perturbative QCD, HERA, 01 natural sciences, Nuclear physics, 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Wave function
Abstract: Results on diffractive photoproduction of psi(2S) mesons are presented using data collected between 1996 and 2000 with the H1 detector at the HERA ep collider. The data correspond to an integrated luminosity of 77 pb(-1). The energy dependence of the diffractive psi(2S) cross section is found to be similar to or possibly somewhat steeper than that for J/psi mesons. The dependences of the elastic and proton dissociative psi(2S) photoproduction cross sections on the squared momentum transfer t at the proton vertex are measured. The t-dependence of the elastic channel, parametrised as e(bt), yields b(el)(psi(2S)) = (4.31 +/- 0.57 +/- 0.46) GeV-2, compatible with that of the J/psi. For the proton dissociative channel the result b(pd)(psi(2S)) = (0.59 +/- 0.13 +/- 0.12) GeV-2 is 2.3 standard deviations smaller than that measured for the J/psi. With proper account of the individual wavefunctions theoretical predictions based on perturbative QCD are found to describe the measurements well. (C) 2002 Elsevier Science B.V. All rights reserved.

231. Measurement of photon production in the very forward direction in deep-inelastic scattering at HERA

Author: K. Urban, Murrough Landon, V. Lubimov, David M. South, P. Van Mechelen, A. Dubak, A. Baghdasaryan, A. Rostovtsev, L. N. Shtarkov, Roland Horisberger, A. Valkárová, A. Makankine, G. Buschhorn, D. Ozerov, Peter Robmann, D. J. Fischer, Dusan Bruncko, Pierre Marage, Vladimir Andreev, C. Niebuhr, Ivan Smiljanic, D. Salek, J. G. Contreras, K. Daum, T. Kluge, H. U. Martyn, S. Egli, L. Lytkin, T. Greenshaw, Th. Naumann, J-P. Meyer, S. Backovic, Y. Soloviev, I. Picuric, M. Kapichine, Anastasia Grebenyuk, J. Ferencei, Ricardo Lopez-Fernandez, Laurent Favart, P. Pahl, E. Gabathuler, M. Steder, Maxime Gouzevitch, Guenter Eckerlin, J. V. Morris, Jenny List, Paul Laycock, E. Malinovski, Karel Cerny, T. Ravdandorj, Emmanuel Sauvan, G. Grindhammer, J. Cvach, Roman Kogler, V. Lendermann, S. Habib, A. Bunyatyan, Christian Helebrant, Marina Rotaru, Tomas Sykora, P. Kostka, Voica Radescu, I. Milcewicz-Mika, A. Glazov, Zhiqing Zhang, D. Wegener, J. C. Bizot, B. R. Grell, K. Krueger, K. Nowak, Gerhard Brandt, Christoph Grab, J. Feltesse, Katerina Lipka, T. H. Tran, Ilias Panagoulias, Stephen Maxfield, Cristinel Diaconu, Fabian Zomer, J. Zacek, J. Turnau, Ringaile Placakyte, Max Klein, D. Traynor, Xavier Janssen, Dave Sankey, Andrew Mehta, K. Begzsuren, N. Gogitidze, A. Fedotov, M. Sauter, J. Zálešák, M. Fleischer, M. Mudrinic, K. B. Cantun Avila, V. Spaskov, Daniel Pitzl, D.K. Nikitin, I. Tsakov, Pavel A. Belov, C. Kiesling, Juraj Bracinik, S. Baghdasaryan, A. B. Meyer, S. Mikocki, A. J. Campbell, J. Delvax, G. D. Patel, P. D. Thompson, G. Herrera, Bogdan Povh, F. Huber, M. Kraemer, F. Sefkow, Jan Kretzschmar, Gabriel Stoicea, Andre Schoening, C. Pascaud, J. E. Olsson, W. Bartel, Hans-Christian Schultz-Coulon, Calin Alexa, F. Moreau, Richard Polifka, Hannes Jung, Alexander Zhokin, S. Shushkevich, B. Delcourt, J. B. Dainton, K. Mueller, Paul Newman, Malte Hildebrandt, C. Vallée, A. Lebedev, A. Eliseev, Claus Kleinwort, G. Laštovička-Medin, Wolfgang Lange, D. Haidt, V. Chekelian, F. D. Aaron, P. Sopicki, A. M. Fomenko, I. R. Kenyon, H. J. Meyer, S. Ghazaryan, Z. Staykova, Tomas Hreus, S. Levonian, Natasa Raicevic, Eram Rizvi, Leif J. Jönsson, Vincent Boudry, V. Dodonov, J. Gayler, L. Bystritskaya, U. Straumann, H. Henschel, Daniel Britzger, E. Hennekemper, A. N. Morozov, Mila Pandurovic, K. H. Hiller, R. C. W. Henderson, H. Pirumov, H. Zohrabyan, A. Specka, V. Cerny, Benno List, M. Brinkmann, I. Bozovic-Jelisavcic, T. J. Sloan, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, P. Truöl, M. Jacquet, E. E. Elsen, Emmanuelle Perez, S. M. Piec, Federico Alberto Ceccopieri, Grzegorz Nowak, A. Dossanov, A. Petrukhin, V. Brisson, E. Barrelet, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, Dieter H. H. Hoffmann, P. E. Reimer, E. Wuensch, M. Herbst, John A Coughlan, B. Stella, Stefan Schmitt, M. Dobre, Vladimir Palichik, Y. Vazdik, R. Felst, B. Pokorny, L. Goerlich, B. Tseepeldorj, Laurent Schoeffel, (ukupan broj autora: 204), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Physics, and Elementary Particle Physics
Subjects: Particle physics, Photon, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Inelastic scattering, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, Momentum, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, Scattering, HERA, Deep inelastic scattering, DESY HERA Stor, Pseudorapidity, H1, Physics::Accelerator Physics, High Energy Physics::Experiment, Lepton
Abstract: The production of photons at very small angles with respect to the proton beam direction is studied in deep-inelastic positron-proton scattering at HERA. The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of $126 \mathrm{pb}^{-1}$. The analysis covers the range of negative four momentum transfer squared at the positron vertex $67.9$ as a function of its transverse momentum $p_T^{lead}$ and longitudinal momentum fraction of the incoming proton $x_L^{lead}$. In addition, the cross sections are studied as a function of the sum of the longitudinal momentum fraction $x_L^{sum}$ of all photons in the pseudorapidity range $\eta>7.9$. The cross sections are normalised to the inclusive deep-inelastic scattering cross section and compared to the predictions of models of deep-inelastic scattering and models of the hadronic interactions of high energy cosmic rays., Comment: 19 pages, 6 figures and 2 tables
Full Text: View/download PDF

232. Measurement of the diffractive longitudinal structure function $F_{L}^{D}$ at HERA

Author: Z. Staykova, J. Delvax, Calin Alexa, P. Tru¨ol, G. D. Patel, K. H. Hiller, H. Henschel, R. C. W. Henderson, I. Panagouliasl, Anastasia Grebenyuk, M. Kraemer, H. Meyer, Leif J. Jönsson, C. Niebuhr, T. Kluge, A. Makankine, G. Buschhorn, S. Ghazaryan, Richard Polifka, E. Barrelet, A. Fedotov, K. B. Cantun Avila, Stephen Maxfield, S. Egli, S. Shushkevich, Pierre Marage, D. Ozerov, Fabian Zomer, I. Picuric, I. Bozovic-Jelisavcic, Y. Soloviev, E. W¨unsch, C. Kiesling, Guenter Eckerlin, D. J. Fischer, Andrew Mehta, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, A. Eliseev, Christian Helebrant, A. J. Campbell, N. Gogitidze, V. Chekelian, F. D. Aaron, V. Lendermann, J. V. Morris, Dirk L. Hoffmann, J. C. Bizot, Ivan Smiljanic, D. Salek, Jenny List, Hannes Jung, Alexander Zhokin, A. Specka, Voica Radescu, Christoph Grab, P. Sopicki, B. Pokorny, S. Baghdasaryan, P. E. Reimer, D.K. Nikitin, A. M. Fomenko, A. Bunyatyan, S. Habib, B. R. Grell, Marina Rotaru, M. Kapichine, G. Herrera, I. Milcewicz-Mika, B. Stella, Grzegorz Nowak, H-C. Schultz-Coulon, Stefan Schmitt, M. Dobre, P. D. Thompson, Juraj Bracinik, J. G. Contreras, David South, A. Dossanov, A. Petrukhin, Wolfgang Lange, L. Bystritskaya, P. Kostka, J. Žáček, F. Moreau, K. Krüger, V. Lubimov, F. Huber, A. Baghdasaryan, A. Rostovtsev, M. Fleischer, M. Herbst, J. Gayler, Paul Newman, Vladimir Palichik, H. Zohrabyan, A. Dubak, L. Goerlich, J. Turnau, Claus Kleinwort, C. Pascaud, C. Vallée, A. Lebedev, J. Zálešák, H. Pirumov, Katerina Lipka, V. Spaskov, Mila Pandurovic, G. Laštovička-Medin, Y. Vazdik, Cristinel Diaconu, Daniel Britzger, E. Hennekemper, L. N. Shtarkov, K. Müller, J. B. Dainton, J. Feltesse, Laurent Favart, U. Straumann, Daniel Pitzl, Bogdan Povh, F. Sefkow, D. Haidt, A. B. Meyer, V. Brisson, V. Cerny, K. Begzsuren, M. Mudrinic, Peter Robmann, D. Wegener, Benno List, Pavel A. Belov, Ringaile Placakyte, D. Traynor, Th. Naumann, I. Tsakov, Vladimir Andreev, T. H. Tran, Eram Rizvi, Tomas Sykora, B. Tseepeldorj, H. U. Martyn, Matthias Klein, V. Dodonov, M. Sauter, Tomas Hreus, Dusan Bruncko, D. P. C. Sankey, P. Pahl, E. Gabathuler, A. Sch¨oning, Karel Cerny, John A Coughlan, Jan Kretzschmar, Roland Horisberger, J. Cvach, S. Backovic, B. Delcourt, Roman Kogler, Gabriel Stoicea, J. E. Olsson, W. Bartel, T. Greenshaw, A. Glazov, A. Valkárová, R. Felst, S. Mikocki, K. Nowak, Malte Hildebrandt, J. Ferencei, T. Ravdandorj, I. R. Kenyon, Natasa Raicevic, Vincent Boudry, A. N. Morozov, Zhen Zhang, Ricardo Lopez-Fernandez, Th. Papadopouloul, M. Steder, M. Brinkmann, K. Daum, Federico Alberto Ceccopieri, Laurent Schoeffel, Murrough Landon, S. Levonian, Gerhard Brandt, Xavier Janssen, P. Van Mechelen, J-P. Meyer, Maxime Gouzevitch, T. J. Sloan, A.S. Belousov, Sergey Rusakov, M. Jacquet, E. E. Elsen, Emmanuelle Perez, S. M. Piec, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), H1 Collaboration, and H1 Collaboration (ukupan broj autora: 205)
Subjects: Particle physics, Photon, Proton, Physics and Astronomy (miscellaneous), FOS: Physical sciences, Parton, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Twist, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, Quantum chromodynamics, 010308 nuclear & particles physics, Scattering, HERA, Dipole, Physique des particules élémentaires, High Energy Physics::Experiment
Abstract: First measurements are presented of the diffractive cross section σ ep→eXY at centre-of-mass energies s√ of 225 and 252GeV, together with a precise new measurement at s√ of 319GeV, using data taken with the H1 detector in the years 2006 and 2007. Together with previous H1 data at s√ of 301GeV, the measurements are used to extract the diffractive longitudinal structure function FDL in the range of photon virtualities 4.0≤Q2≤44.0GeV2 and fractional proton longitudinal momentum loss 5×10−4≤x ℙ≤3×10−3. The measured FDL is compared with leading twist predictions based on diffractive parton densities extracted in NLO QCD fits to previous measurements of diffractive Deep-Inelastic Scattering and with a model which additionally includes a higher twist contribution derived from a colour dipole approach. The ratio of the diffractive cross section induced by longitudinally polarised photons to that for transversely polarised photons is extracted and compared with the analogous quantity for inclusive Deep-Inelastic Scattering., The European Physical Journal C, 71 (12), ISSN:1434-6044, ISSN:1434-6052
Full Text: View/download PDF

233. A MEASUREMENT OF MULTI-JET RATES IN DEEP-INELASTIC SCATTERING AT HERA

Author: M. Schulz, M. Nyberg, Paul Newman, J. Harjes, T. Jansen, W. Hildesheim, R. Marshall, Dirk Krücker, S. Willard, G. Rädel, K. C. Hoeger, M. Korn, J. Garvey, B. Kuznik, V. Riech, C. A. Meyer, A. M. Fomenko, M. Winde, J. Feltesse, M. Arpagaus, Ph. Huet, Ch. Pichler, G. Weber, Armen Vartapetian, U. Straumann, C. Zeitnitz, M. Hapke, L. Johnson, Dave Sankey, P. Fuhrmann, R. L. Lander, H. Bärwolff, K. Rauschnabel, Wolfgang Lange, S. Levonian, J. M. Foster, R. C. W. Henderson, Daniel Johnson, J. Duboc, B. Stella, A. Rostovtsev, H. Greif, M. Rudowicz, I. Abt, E. Binder, N. Huot, J. Tutas, J. D. Burger, R. Prosi, L. Goerlich, E. Evrard, Jean-Arcady Meyer, J. Gayler, M. Savitsky, G. D. Patel, W. Scobel, Max Klein, R. Gerhards, J. Turnau, K. Johannsen, Christophe Royon, Kerstin Borras, A. Semenov, E. Sanchez, E. Malinovski, M. Kuhlen, G. Grindhammer, P. E. Reimer, H. Meyer, S. Kermiche, K. Flamm, S. Eichenberger, A. Mavroidis, M. Steenbock, J. Cvach, B. Andrieu, David Schmidt, Th. Wolff, F. Linsel, J. Moreels, G. Siegmon, P. A. Smirnov, Alan Campbell, E. M. Hanlon, G. G. Winter, A. Wegner, Daniel Pitzl, D. Lüers, Pavel Staroba, R. Kaschowitz, D. Handschuh, J. Žáček, H. Ziaeepour, J. Kurzhöfer, K. Stephens, E. Peppel, H. Krehbiel, P. Steffen, F. Moreau, J. Hladký, N. Magnussen, J. Heatherington, C. Niebuhr, Peter Schacht, G. C. Lopez, A. Valkárová, S. Riess, V. Nagovizin, A. W. E. Dann, P. I. P. Kalmus, N. Sahlmann, T. R. Ebert, P. Verrecchia, F. Brasse, H. Shooshtari, J. V. Morris, Winston Ko, W. von Schlippe, D. Feeken, G. Buschhorn, A. Jacholkowska, A. Fedotov, W. Schmitz, Günter Flügge, H. T. Phillips, J. P. Kubenka, P. Hill, J. Bán, H. Spitzer, E. Barrelet, T. Merz, Stephen Maxfield, C. Pascaud, Guenter Eckerlin, R. Vick, P. Biddulph, R. Ebbinghaus, D. Newton, V. Schröder, S. D. Kolya, S. Reinshagen, M. A. Jabiol, T. P. Yiou, E. Vogel, Y. Soloviev, Gregorio Bernardi, S. Prell, Anton Babaev, Nicolas Ellis, André Schöning, H. H. Kaufmann, A. B. Clegg, Andrew Mehta, C. Kiesling, Ch. Berger, Eckhard Elsen, M. Forbush, J. Riedlberger, S. Kasarian, Karlheinz Meier, N. Gogitidze, H. P. Wellisch, C. Thiebaux, S. K. Kotelnikov, L. Hajduk, A. Schwind, I. F. Fensome, U. Bassler, R. J. Ellison, J. Strachota, B. Delcourt, L. Büngener, S. Mani, Leith Godfrey, Michel Devel, Vincent Hedberg, G. Knies, A. De Roeck, Richard E. Taylor, R. Langkau, Mario David, T. Carli, H. U. Martyn, V. Milone, U. Stösslein, I. W. Walker, K. Rybicki, I. Herynek, Dusan Bruncko, R. Bernet, H. P. Beck, Stephen Burke, A. Lebedev, S. Egli, L. Urban, T. Kurča, M. Ruffer, B. Naroska, S. Orenstein, F. Ferrarotto, H. Genzel, A. Lindner, R. Nisius, L.A. Womersley, A. Leuschner, Christoph Grab, Grzegorz Nowak, C. Jacobsson, Peter Loch, M. Rietz, D. Haidt, L. N. Shtarkov, G. W. Noyes, P. Lanius, P. Ribarics, T. Greenshaw, F. Zomer, A. M. Goodall, R. Felst, J.P. Phillips, Volker Blobel, A. Walther, C. Leverenz, R. Eichler, C. Keuker, Rosario Martín, J. Ferencei, J. Ebert, C. Schmidt, P. Dingus, U. Braun, R. D. Appuhn, Leif J. Jönsson, P. Van Esch, M. Flieser, W. Zimmermann, M. Vecko, L. Del Buono, J. Stier, V. Andreev, M. Fleischer, J. Haack, Didier Lacour, D. Mercer, M. Eberle, J. P. Sutton, Claus Kleinwort, J. R. Smith, I. O. Skillicorn, H. B. Dreis, F. Charles, J. Marks, G. Heinzelmann, F. Ould-Saada, H. Lohmander, V. Tchernyshov, Y. Vazdik, L.R. West, V. Korbel, U. Kathage, I. Sheviakov, R. Herma, O. Hamon, E. Eisenhandler, W. Pilgram, G. Villet, Ch. Ley, S. Masson, Pierre Marage, U. Krüger, Peter Robmann, M. Gennis, M. Colombo, J. Martens, A. Bischoff, V. Brisson, F. Kole, S. Dagoret, Yves Sirois, B. Schwab, H. Küster, H. Bergstein, L. Smolik, U. Seehausen, G. Lindström, Murrough Landon, A. E. Wright, Th. Naumann, Petr Zavada, C. Gruber, H. Duhm, V I. Shekelyan, R. Haydar, P. C. Bosetti, K. Wacker, R. Steinberg, Pavel Murin, H. Grässler, J. D. Dowell, A. Courau, W. Flauger, J. Lipinski, M. Ibbotson, E. Gabathuler, E. Deffur, H. K. Nguyen, P. Kostka, O. Dünger, G. Franke, S. A. Murray, Laurent Favart, I. V. Gorelov, K. Müller, C. Dollfus, R. Grässler, Ch. Coutures, W. Struczinski, H. Itterbeck, S. Peters, Ulrich Goerlach, P. Goritchev, Martin Erdmann, U. Obrock, F. Niebergall, K. Gamerdinger, D. Neyret, G. Thompson, Steve McMahon, W.D. Dau, J. B. Dainton, A. Drescher, D. Düllmann, Claire Bourdarios, H. Henschel, H. J. Behrend, J.C. Bizot, M. Goldberg, G. Cozzika, F. Eisele, Stefan Valkar, Hannes Jung, C. Vallée, T. Ahmed, P. Baranov, Peter Schleper, Marc Besancon, A.S. Belousov, Sergey Rusakov, P. Truöl, I. Tichomirov, H. Hufnagel, C.D. Hilton, Mikhail Danilov, D. Lewin, R. Roosen, J. Martyniak, Frank Raupach, B. Fominykh, A. Buniatian, D. Wegener, W.J. Haynes, Emmanuel Monnier, Eckhart Fretwurst, S. M. Robertson, T. Köhler, M. W. Krasny, N. Wulff, V. Efremenko, P. Kasselmann, S. Mikocki, M. Jaffre, J. E. Olsson, W. Bartel, F. W. Büsser, G. Bertrand-Coremans, W. Braunschweig, R. Sell, I. R. Kenyon, L. Criegee, J. Formánek, U. Siewert, M. Zimmer, Vincent Boudry, Jean-Francois Laporte, A. Gellrich, F. Lamarche, Hermann Kolanoski, D. Clarke, John A Coughlan, Horst Oberlack, and A. Usik
Subjects: Quantum chromodynamics, Physics, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Detector, Momentum transfer, Elementary particle, HERA, Electron, Deep inelastic scattering, Nuclear physics, High Energy Physics::Experiment, Engineering (miscellaneous), Event generator
Abstract: Multi-jet production is observed in deep-inelastic electron proton scattering with the H1 detector at HERA. Jet rates for momentum transfers squared up to 500 GeV2 are determined using the JADE jet clustering algorithm. They are found to be in agreement with predictions from QCD based models.

234. Measurement of charm and beauty jets in deep inelastic scattering at HERA

Author: Paul Laycock, P. Kostka, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, J. V. Morris, J. Turnau, Jenny List, A.J. Rahmat, A. Bunyatyan, Marina Rotaru, K. Begzsuren, V. Lubimov, M. Mudrinic, I. Tsakov, G. Laštovička-Medin, C. Niebuhr, S. Egli, D.K. Nikitin, T. J. Sloan, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, P. Truöl, Y. Soloviev, A. Dubak, D. Wegener, A. Knutsson, S. Shushkevich, M. Jacquet, E. E. Elsen, L. N. Shtarkov, T. H. Tran, Sakar Osman, A. Eliseev, Emmanuelle Perez, S. M. Piec, Dave Sankey, J. Delvax, Federico Alberto Ceccopieri, Grzegorz Nowak, N. Loktionova, K. H. Hiller, R. C. W. Henderson, M. von den Driesch, G. D. Patel, J. Cvach, V. Efremenko, A. Makankine, G. Buschhorn, D. Ozerov, Roland Horisberger, A. Valkárová, T. Sykora, Mila Pandurovic, A. Dossanov, A. Petrukhin, K. Nowak, Voica Radescu, Christoph Grab, D. J. Fischer, S. Mikocki, Calin Alexa, C. Pascaud, C. Vallée, K. Daum, A. D.R. Vargas Trevino, J. E. Olsson, A. Specka, A. Lebedev, Krzysztof Kutak, Vladimir Andreev, H. U. Martyn, Matthias Klein, D. Haidt, W. Bartel, David M. South, Malte Hildebrandt, Wolfgang Lange, K. Müller, S. Habib, Andre Schoening, Eram Rizvi, R. Kogler, Stephen Maxfield, S. Ghazaryan, B. Tseepeldorj, A. Baghdasaryan, A. Rostovtsev, Matthias Ulrich Mozer, A. Fedotov, John A Coughlan, Andrew Mehta, N. Gogitidze, V. Dodonov, J. Gayler, P. D. Thompson, Laurent Schoeffel, I. R. Kenyon, A. W. Jung, K. Urban, Natasa Raicevic, Murrough Landon, G. Herrera, K. B. Cantun Avila, F. Moreau, Vincent Boudry, P. E. Reimer, V. Brisson, H. Pirumov, T. Toll, Katerina Lipka, A. N. Morozov, Judith Katzy, P. Van Mechelen, E. Wuensch, H. J. Meyer, R. Placakyte, Daniel Britzger, E. Hennekemper, D. Sunar, Anna Kropivnitskaya, R. Felst, C. Kiesling, B. Stella, Stefan Schmitt, M. Dobre, A. Nikiforov, A. J. Campbell, E. Barrelet, Ricardo Lopez-Fernandez, B. Pokorny, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, I. Bozovic-Jelisavcic, Vladimir Palichik, M. Steder, M. Herbst, F. Huber, L. Bystritskaya, B. R. Grell, L. Goerlich, Hans-Christian Schultz-Coulon, Peter Robmann, Y. Vazdik, M. Fleischer, Gabriel Stoicea, Tomas Hreus, S. Backovic, Th. Naumann, H. Zohrabyan, P. Pahl, E. Gabathuler, Christian Helebrant, Dirk L. Hoffmann, J. C. Bizot, V. Cerny, Benno List, I. Milcewicz-Mika, M. Brinkmann, Ivan Smiljanic, Bogdan Povh, D. Salek, A. Cholewa, V. Lendermann, F. Sefkow, J. G. Contreras, J. Feltesse, Ilias Panagoulias, P. Sopicki, A. M. Fomenko, Laurent Favart, Cristinel Diaconu, D. Traynor, Daniel Pitzl, T. Kluge, M. Sauter, I. Picuric, Guenter Eckerlin, S. Levonian, Juraj Bracinik, Jan Kretzschmar, B. Delcourt, Pierre Marage, Karel Cerny, A. Glazov, Paul Newman, J. B. Dainton, Claus Kleinwort, U. Straumann, K. Krueger, Gerhard Brandt, J. Zacek, Xavier Janssen, J-P. Meyer, M. Kapichine, Maxime Gouzevitch, Fabian Zomer, J. Zálešák, V. Spaskov, A. B. Meyer, M. Kraemer, Hannes Jung, Alexander Zhokin, M. Deak, G. Thompson, Z. Staykova, Richard Polifka, H. Henschel, Leif J. Jönsson, V. Chekelian, F. D. Aaron, Anastasia Grebenyuk, Zhiqing Zhang, Dusan Bruncko, T. Greenshaw, J. Ferencei, T. Ravdandorj, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, H1, Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), H1 Collaboration, and (ukupan broj autora: 219)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, Hadron, FOS: Physical sciences, Elementary particle, Inelastic scattering, 01 natural sciences, 7. Clean energy, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], ddc:530, Charm (quantum number), 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Physics, 010308 nuclear & particles physics, Scattering, HERA, Deep inelastic scattering, Pseudorapidity, High Energy Physics::Experiment
Abstract: Measurements of cross sections for events with charm and beauty jets in deep inelastic scattering at HERA are presented. Events with jets of transverse energy E_T^jet > 6 GeV and pseudorapidity -1.0 < eta^jet < 1.5 in the laboratory frame are selected in the kinematic region of photon virtuality Q^2 > 6 GeV^2 and inelasticity variable 0.07 < y < 0.625. Measurements are also made requiring a jet in the Breit frame with E_T^*jet > 6 GeV. The data were collected with the H1 detector in the years 2006 and 2007 corresponding to an integrated luminosity of 189 pb^-1. The numbers of charm and beauty jets are determined using variables reconstructed using the H1 vertex detector with which the impact parameters of the tracks to the primary vertex and the position of secondary vertices are measured. The measurements are compared with QCD predictions and with previous measurements where heavy flavours are identified using muons., 33 pages, 9 figures, 4 tables
Full Text: View/download PDF

235. Measurement of Feynman- $$x$$ x spectra of photons and neutrons in the very forward direction in deep-inelastic scattering at HERA

Author: Paul Laycock, E. Malinovski, Emmanuel Sauvan, G. Grindhammer, Zhen Zhang, M. Steder, P. D. Thompson, B. Lobodzinski, D. Ozerov, C. Pascaud, C. Vallée, A. Lebedev, J. E. Olsson, Natasa Raicevic, Vincent Boudry, A. N. Morozov, D. Haidt, Pavel A. Belov, H. J. Meyer, D. Salek, J. Feltesse, T. Greenshaw, Paul Newman, A. Baghdasaryan, S. Shushkevich, A. Rostovtsev, Eram Rizvi, Claus Kleinwort, J. Ferencei, T. Ravdandorj, V. Dodonov, Tomas Sykora, J. Žáček, M. Sauter, Max Klein, H. U. Martyn, D. Traynor, D. Wegener, Katerina Lipka, J. G. Contreras, Fabian Zomer, Gerhard Brandt, U. Straumann, R. Roosen, F. Huber, V. Chekelian, C. Niebuhr, A. B. Meyer, Hans-Christian Schultz-Coulon, Monica Dobre, Richard Polifka, Alexander Bylinkin, S. Egli, L. Lytkin, K. B. Cantun Avila, H. Pirumov, Xavier Janssen, Y. Soloviev, S. Ghazaryan, M. Fleischer, E. Wünsch, Dave Sankey, Cristinel Diaconu, A. J. Campbell, Roland Horisberger, R. C. W. Henderson, Voica Radescu, Christoph Grab, A. Valkárová, K. Müller, G. D. Patel, Grzegorz Nowak, A. Dossanov, A. Petrukhin, Tomas Hreus, B. Tseepeldorj, P. E. Reimer, V. Andreev, C. Kiesling, S. Levonian, K. Nowak, Th. Naumann, Jenny List, Hannes Jung, A.S. Belousov, A. Grebenyuk, Sergey Rusakov, J-P. Meyer, B. Pokorny, P. Truöl, A. Specka, A. Buniatyan, M. Brinkmann, Marina Rotaru, P. Pahl, Maxime Gouzevitch, E. Gabathuler, Daniel Pitzl, Federico Alberto Ceccopieri, R. Žlebčík, V. Brisson, P. Kostka, L. Goerlich, Bogdan Povh, Wolfgang Lange, Karel Cerny, J. Turnau, F. Sefkow, Stephen Maxfield, V. Spaskov, M. Herbst, J. B. Dainton, K. Begzsuren, Jan Kretzschmar, J. Gayler, S. Mikocki, I. Tsakov, Andrew Mehta, N. Gogitidze, Y. Vazdik, Roman Kogler, B. Stella, Stefan Schmitt, R. Plačakytė, A. Glazov, P. Sopicki, M. Jacquet, E. E. Elsen, A. M. Fomenko, Peter Robmann, Emmanuelle Perez, I. Picuric, Guenter Eckerlin, André Schöning, Laurent Schoeffel, Murrough Landon, Dieter Hoffmann, P. Van Mechelen, Daniel Britzger, K. Daum, Benno List, Katja Krüger, A. V. Fedotov, David South, L. Bystritskaya, H. Zohrabyan, J. Hladkỳ, M. Kapichine, Laurent Favart, Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire des technologies de la microélectronique (LTM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), H1, Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), and Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)
Subjects: Particle physics, Antiparticle, Physics and Astronomy (miscellaneous), Astrophysics::High Energy Astrophysical Phenomena, exclusive production [photon], Feynman [scaling], FOS: Physical sciences, measured [cross section], Inelastic scattering, momentum transfer dependence, 7. Clean energy, deep inelastic scattering [model], Computer Science::Digital Libraries, High Energy Physics - Experiment, energy dependence, x-dependence, Nuclear physics, symbols.namesake, High Energy Physics - Experiment (hep-ex), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Feynman diagram, ddc:530, deep inelastic scattering [positron p], 319 GeV-cms, Nuclear Experiment, Engineering (miscellaneous), Physics, interaction [hadron hadron], Scattering, HERA, forward production [n], Deep inelastic scattering, DESY HERA Stor, Pseudorapidity, Antimatter, symbols, H1, High Energy Physics::Experiment, high energy behavior [cross section], experimental results
Abstract: Measurements of normalised cross sections for the production of photons and neutrons at very small angles with respect to the proton beam direction in deep-inelastic $ep$ scattering at HERA are presented as a function of the Feynman variable $x_F$ and of the centre-of-mass energy of the virtual photon-proton system $W$. The data are taken with the H1 detector in the years 2006 and 2007 and correspond to an integrated luminosity of $131 \mathrm{pb}^{-1}$. The measurement is restricted to photons and neutrons in the pseudorapidity range $\eta>7.9$ and covers the range of negative four momentum transfer squared at the positron vertex $6, Comment: 30 pages, 5 tables, 10 figures, submitted to EPJC
Full Text: View/download PDF

236. EXPERIMENTAL-STUDY OF JET MASSES IN E+E- ANNIHILATION AT CM ENERGIES BETWEEN 12-GEV AND 43.5-GEV

Author: A. Montag, D. H. Saxon, G. Yekutieli, Hermann Kolanoski, J. Del Peso, Janusz Chwastowski, A. Caldwell, Guenter Wolf, M. E. Veitch, Wolfram Dietrich Zeuner, B. Löhr, Ian R Tomalin, K. U. Pösnecker, A. Jocksch, A. Hassard, J. Shulman, Eduardo Ros, B. Foster, R. J. Cashmore, G. Poelz, M. Takashima, J. M. Pawlak, Fernando Barreiro, K. Genser, D. Muller, M. G. Bowler, A. Leites, G. Mikenberg, R. Gerhards, L. Labarga, Y. Eisenberg, R. Walczak, E. Hilger, M. Holder, A. N. Wainer, R. Wedemeyer, T. Kracht, W. Braunschweig, D. Revel, H. M. Fischer, A. J. Martin, Stephanie Brandt, Georg Zobernig, John Hart, D. Notz, U. Karshon, Luis Hervas, Sau Lan Wu, H. Kowalski, J. Krüger, H. Hartmann, H. U. Martyn, E. Bernardi, E.E. Ronat, F. J. Kirschfink, G. P. Heath, Jens Hartmann, E. Lohrmann, D. Su, D. Lüke, S. Ritz, M. Traseira, and Philip Burrows
Subjects: Quantum chromodynamics, Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Electron–positron annihilation, High Energy Physics::Phenomenology, Hadron, Elementary particle, Lambda, Hadronization, Nuclear physics, Mass spectrum, High Energy Physics::Experiment, Nuclear Experiment, Engineering (miscellaneous)
Abstract: Data on jet masses, resulting from the decomposition ofe + e − hadronic final states into two hemispheres, are presented at centre of mass energies between 12 and 43.5 GeV. Comparisons are made with bareO(α 2 ) QCD predictions as well as with QCD based fragmentation models. Values for α s and $$\Lambda _{\overline {MS} } $$ are determined, both with and without hadronization effects included. Upper and lower limits for $$\Lambda _{\overline {MS} } $$ independent of fragmentation models have been determined to be 0.480±0.025 GeV and 0.047±0.007 GeV respectively.

237. PION, KAON AND PROTON CROSS-SECTIONS IN E+E- ANNIHILATION AT 34 GEV AND 44 GEV CM ENERGY

Author: Guenter Wolf, I. M. Silvester, E.E. Ronat, C. Balkwill, D. M. Binnie, E. Lohrmann, H. Kowalski, M. Takashima, K. U. Pösnecker, A. Montag, J. Del Peso, P. Rehders, G. P. Heath, Hl Krasemann, M. Holder, H. Hultschig, J. Krüger, A. Shapira, John Hart, G. Tysarczyk, H. Hartmann, Sau Lan Wu, E. Bernardi, Stephanie Brandt, A. Jocksch, J. M. Pawlak, D. H. Saxon, W. Gerhardt, A. Eskreys, B. Bock, G. Poelz, L. Labarga, H. M. Fischer, H. U. Martyn, U. Karshon, A. J. Martin, Philip Burrows, T. Kracht, A. Leites, Fernando Barreiro, R. Wedemeyer, C. Winand, Jens Hartmann, Georg Zobernig, D. Notz, G. E. Forden, F. J. Kirschfink, D. Revel, A. Caldwell, John Hassard, D. Su, P. N. Ratoff, R. Gerhards, K. Genser, M. G. Bowler, N. Wainer, Y. Eisenberg, R. Walczak, W. Braunschweig, B. Löhr, P. Joos, B. Foster, E. Wicklund, A. Ladage, D. Lüke, S. Ritz, G. Yekutieli, Wolfram Dietrich Zeuner, Eduardo Ros, R. J. Cashmore, E. Hilger, Janusz Chwastowski, K. Gather, G. Mikenberg, M. E. Veitch, P. Mättig, J. Shulman, I. R. Tomalin, D. Muller, D. Strom, A. J. Sephton, D. Trines, and Hermann Kolanoski
Subjects: Physics, Particle physics, Annihilation, Physics and Astronomy (miscellaneous), Proton, Meson, Astrophysics::High Energy Astrophysical Phenomena, Electron–positron annihilation, Elementary particle, Nuclear physics, Pion, Antiproton, High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, Engineering (miscellaneous)
Abstract: The inclusive production of π± andK± mesons and of protons and antiprotons ine+e− annihilations has been measured at 34 GeV and 44 GeV center of mass energy; in addition π± mesons have been measured at 44 GeV c.m. energy. Differential cross sections and particle yields are given. At 34 GeV average multiplicities are: $$\begin{gathered} \left\langle {n\left( {\pi ^ \pm } \right)} \right\rangle = 10.9 \pm 0.5,\left\langle {n\left( {K^ \pm } \right)} \right\rangle = 1.76 \pm 0.20, \hfill \\ \left\langle {n\left( {p + \bar p} \right)} \right\rangle = 0.67 \pm 0.06 \hfill \\ \end{gathered} $$ and at 44 GeV: $$\left\langle {n\left( {\pi ^ \pm } \right)} \right\rangle = 11.1 \pm 0.5,\left\langle {n\left( {\pi ^0 } \right)} \right\rangle = 5.4 \pm 1.0.$$

238. Measurement of open beauty production at HERA

Author: C. Adloff, V. Andreev, B. Andrieu, V. Arkadov, A. Astvatsatourov, I. Ayyaz, A. Babaev, J. Bähr, P. Baranov, E. Barrelet, W. Bartel, U. Bassler, P. Bate, A. Beglarian, O. Behnke, C. Beier, A. Belousov, T. Benisch, Ch. Berger, G. Bernardi, T. Berndt, G. Bertrand-Coremans, P. Biddulph, J.C. Bizot, V. Boudry, W. Braunschweig, V. Brisson, H.-B. Bröker, D.P. Brown, W. Brückner, P. Bruel, D. Bruncko, J. Bürger, F.W. Büsser, A. Bunyatyan, S. Burke, A. Burrage, G. Buschhorn, D. Calvet, A.J. Campbell, J. Cao, T. Carli, E. Chabert, M. Charlet, D. Clarke, B. Clerbaux, C. Collard, J.G. Contreras, J.A. Coughlan, M.-C. Cousinou, B.E. Cox, G. Cozzika, J. Cvach, J.B. Dainton, W.D. Dau, K. Daum, M. David, M. Davidsson, B. Delcourt, R. Demirchyan, A. De Roeck, E.A. De Wolf, C. Diaconu, P. Dixon, V. Dodonov, K.T. Donovan, J.D. Dowell, A. Droutskoi, C. Duprel, J. Ebert, G. Eckerlin, D. Eckstein, V. Efremenko, S. Egli, R. Eichler, F. Eisele, E. Eisenhandler, E. Elsen, M. Erdmann, A.B. Fahr, P.J.W. Faulkner, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, F. Ferrarotto, S. Ferron, M. Fleischer, G. Flügge, A. Fomenko, I. Foresti, J. Formánek, J.M. Foster, G. Franke, E. Gabathuler, K. Gabathuler, J. Garvey, J. Gassner, J. Gayler, R. Gerhards, S. Ghazaryan, A. Glazov, L. Goerlich, N. Gogitidze, M. Goldberg, I. Gorelov, C. Grab, H. Grässler, T. Greenshaw, R.K. Griffiths, G. Grindhammer, T. Hadig, D. Haidt, L. Hajduk, V. Haustein, W.J. Haynes, B. Heinemann, G. Heinzelmann, R.C.W. Henderson, S. Hengstmann, H. Henschel, R. Heremans, G. Herrera, I. Herynek, M. Hilgers, K.H. Hiller, C.D. Hilton, J. Hladký, P. Höting, D. Hoffmann, R. Horisberger, S. Hurling, M. Ibbotson, M. Jacquet, M. Jaffre, L. Janauschek, D.M. Jansen, X. Janssen, L. Jönsson, D.P. Johnson, A. Zhokin, M. Jones, H. Jung, H.K. Kästli, D. Kant, M. Kapichine, M. Karlsson, O. Karschnick, O. Kaufmann, M. Kausch, F. Keil, N. Keller, I.R. Kenyon, S. Kermiche, C. Kiesling, M. Klein, C. Kleinwort, G. Knies, H. Kolanoski, S.D. Kolya, V. Korbel, P. Kostka, S.K. Kotelnikov, M.W. Krasny, H. Krehbiel, J. Kroseberg, D. Krücker, K. Krüger, A. Küpper, T. Kuhr, T. Kurča, W. Lachnit, R. Lahmann, D. Lamb, M.P.J. Landon, W. Lange, U. Langenegger, A. Lebedev, F. Lehner, V. Lemaitre, R. Lemrani, V. Lendermann, S. Levonian, M. Lindstroem, V. Lubimov, G. Lobo, E. Lobodzinska, S. Lüders, D. Lüke, L. Lytkin, N. Magnussen, H. Mahlke-Krüger, N. Malden, E. Malinovski, I. Malinovski, R. Maraček, P. Marage, J. Marks, R. Marshall, H.-U. Martyn, J. Martyniak, S.J. Maxfield, T.R. McMahon, A. Mehta, K. Meier, P. Merkel, F. Metlica, A. Meyer, H. Meyer, J. Meyer, P.-O. Meyer, S. Mikocki, D. Milstead, R. Mohr, S. Mohrdieck, M.N. Mondragon, F. Moreau, A. Morozov, J.V. Morris, D. Müller, K. Müller, P. Murı́n, V. Nagovizin, B. Naroska, J. Naumann, Th. Naumann, I. Négri, P.R. Newman, H.K. Nguyen, T.C. Nicholls, F. Niebergall, C. Niebuhr, O. Nix, G. Nowak, T. Nunnemann, J.E. Olsson, A. Usik, D. Ozerov, P. Palmen, V. Panassik, C. Pascaud, S. Passaggio, G.D. Patel, H. Pawletta, E. Perez, J.P. Phillips, D. Pitzl, R. Pöschl, I. Potashnikova, B. Povh, K. Rabbertz, G. Rädel, J. Rauschenberger, P. Reimer, B. Reisert, D. Reyna, S. Riess, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, C. Royon, S. Rusakov, K. Rybicki, D.P.C. Sankey, J. Scheins, F.-P. Schilling, S. Schleif, P. Schleper, D. Schmidt, L. Schoeffel, T. Schörner, V. Schröder, H.-C. Schultz-Coulon, F. Sefkow, V. Shekelyan, I. Sheviakov, L.N. Shtarkov, G. Siegmon, Y. Sirois, T. Sloan, P. Smirnov, M. Smith, V. Solochenko, Y. Soloviev, V. Spaskov, A. Specka, H. Spitzer, R. Stamen, J. Steinhart, B. Stella, A. Stellberger, J. Stiewe, U. Straumann, W. Struczinski, J.P. Sutton, M. Swart, M. Taševský, V. Tchernyshov, S. Tchetchelnitski, G. Thompson, P.D. Thompson, N. Tobien, R. Todenhagen, D. Traynor, P. Truöl, G. Tsipolitis, J. Turnau, J. Turney, E. Tzamariudaki, S. Udluft, S. Valkár, A. Valkárová, C. Vallée, A. Van Haecke, P. Van Mechelen, Y. Vazdik, G. Villet, S. von Dombrowski, K. Wacker, R. Wallny, T. Walter, B. Waugh, G. Weber, M. Weber, D. Wegener, A. Wegner, T. Wengler, M. Werner, L.R. West, G. White, S. Wiesand, T. Wilksen, M. Winde, G.-G. Winter, Ch. Wissing, M. Wobisch, H. Wollatz, E. Wünsch, J. Žáček, J. Zálešák, Z. Zhang, P. Zini, F. Zomer, J. Zsembery, M. zur Nedden, H1 Collaboration, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), H1, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), and Damoiseaux, Magali
Subjects: Quantum chromodynamics, Physics, Nuclear and High Energy Physics, Particle physics, Muon, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Sigma, FOS: Physical sciences, HERA, 01 natural sciences, 7. Clean energy, Bottom quark, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], High Energy Physics::Experiment, Production (computer science), Nuclear Experiment, 010306 general physics, Bar (unit)
Abstract: The first observation of open b production in ep collisions is reported. An event sample containing muons and jets has been selected which is enriched in semileptonic b quark decays. The visible cross section \sigma(ep -> b \bar{b}X -> \mu X') for Q^2 < 1 GeV^2, 0.1 < y < 0.8 is measured to be 0.176+-0.016(stat.)+0.026-0.017(syst.) nb for the muons to be detected in the range 35 deg < \theta^\mu < 130 deg and \pt^\mu > 2.0 GeV in the laboratory frame. The expected visible cross section based on a NLO QCD calculation is 0.104+-0.017 nb. The cross sections for electroproduction with Q^2 e b\bar{b}X) = 7.1+-0.6(stat.)+1.5-1.3(syst.) nb and \sigma(\gamma p-> b\bar{b} X) = 111+-10(stat.)+23-20(syst.) at an average \sim 180 GeV, respectively., Comment: 11 pages, 4 figures, 0 tables, submitted to Physics Letters B

239. Measurement of beauty and charm photoproduction using semi-muonic decays in dijet events at HERA

Author: A. Dossanov, A. Petrukhin, B. Stella, Stefan Schmitt, M. Dobre, M. Jacquet, E. E. Elsen, S. Habib, J-P. Meyer, Vladimir Palichik, M. Kapichine, J. Feltesse, Ilias Panagoulias, P. Kostka, J. Turnau, V. Brisson, K. Begzsuren, J. E. Olsson, W. Bartel, J. Cvach, I. Tsakov, J. Zálešák, V. Spaskov, Emmanuelle Perez, Y. Vazdik, A. B. Meyer, Max Klein, David South, V. Andreev, D. Traynor, Malte Hildebrandt, Dusan Bruncko, Maxime Gouzevitch, Roland Horisberger, A. Valkárová, K. Krüger, T. Greenshaw, I. R. Kenyon, Natasa Raicevic, Cristinel Diaconu, S. Shushkevich, E. Barrelet, C. Niebuhr, A. Eliseev, K. Daum, V. Cerny, Benno List, Alexander Bylinkin, V. Lubimov, J. Ferencei, G. Laštovička-Medin, T. Kluge, Vincent Boudry, T. Ravdandorj, K. B. Cantun Avila, R. Žlebčík, A. N. Morozov, Daniel Pitzl, Karel Cerny, J. E. Ruiz Tabasco, E. A. De Wolf, R. Roosen, S. Egli, Paul Laycock, E. Malinovski, Emmanuel Sauvan, Laurent Favart, Dirk L. Hoffmann, J. C. Bizot, Michael Kramer, C. Pascaud, C. Vallée, A. Lebedev, Z. Staykova, Y. Soloviev, G. Grindhammer, A. Dubak, Federico Alberto Ceccopieri, Richard Polifka, Daniel Britzger, E. Hennekemper, Roman Kogler, C. Kiesling, A. J. Campbell, D. Wegener, I. Picuric, L. N. Shtarkov, A. Glazov, F. D. Aaron, Guenter Eckerlin, André Schöning, J. Žáček, F. Huber, Hans-Christian Schultz-Coulon, S. Levonian, K. Nowak, Katerina Lipka, Pavel A. Belov, Th. Naumann, K. Müller, P. Pahl, T. H. Tran, D. Haidt, Voica Radescu, H. Henschel, Christoph Grab, D. Ozerov, Fabian Zomer, Laurent Schoeffel, Eram Rizvi, Mila Pandurovic, Wolfgang Lange, J. Gayler, E. Gabathuler, Gabriel Stoicea, Tomas Hreus, Jan Kretzschmar, R. Plačakytė, V. Chekelian, D. Salek, D. J. Fischer, H. U. Martyn, B. Delcourt, Stephen Maxfield, V. Dodonov, Zhen Zhang, Murrough Landon, R. Felst, P. Sopicki, V. Lendermann, S. Mikocki, A. M. Fomenko, John A Coughlan, Ricardo Lopez-Fernandez, M. Steder, Andrew Mehta, N. Gogitidze, A. Baghdasaryan, A. Rostovtsev, Gerhard Brandt, I. Milcewicz-Mika, Tomas Sykora, H. Pirumov, J. G. Contreras, Juraj Bracinik, M. Sauter, A. V. Fedotov, M. Brinkmann, T. J. Sloan, A.S. Belousov, Th D. Papadopoulou, Sergey Rusakov, Xavier Janssen, P. E. Reimer, P. Truöl, Paul Newman, Calin Alexa, J. V. Morris, Jenny List, P. Van Mechelen, G. Herrera, L. Bystritskaya, Claus Kleinwort, J. B. Dainton, M. Fleischer, A. Bunyatyan, Marina Rotaru, H. Zohrabyan, B. Tseepeldorj, M. Herbst, Bogdan Povh, F. Sefkow, Hannes Jung, B. Pokorny, S. Ghazaryan, Alexander Zhokin, U. Straumann, L. Goerlich, D.K. Nikitin, S. Baghdasaryan, E. Wünsch, Dave Sankey, J. Delvax, G. D. Patel, I. Bozovic-Jelisavcic, Peter Robmann, S. Backovic, Anastasia Grebenyuk, Leif J. Jönsson, P. D. Thompson, F. Moreau, B. Lobodzinski, H. J. Meyer, K. H. Hiller, R. C. W. Henderson, A. Specka, Grzegorz Nowak, Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE), Centre National de la Recherche Scientifique (CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Pierre et Marie Curie - Paris 6 (UPMC), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Laboratoire Leprince-Ringuet (LLR), Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut de Physique Nucléaire de Lyon (IPNL), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre de Physique des Particules de Marseille (CPPM), Aix Marseille Université (AMU)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Annecy de Physique des Particules (LAPP), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Laboratoire des technologies de la microélectronique (LTM), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Joseph Fourier - Grenoble 1 (UJF)-Centre National de la Recherche Scientifique (CNRS), H1, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Aix Marseille Université (AMU), Laboratoire d'Annecy de Physique des Particules (LAPP/Laboratoire d'Annecy-le-Vieux de Physique des Particules), Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Université Grenoble Alpes (UGA)-Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA) - Grenoble, and Université Joseph Fourier - Grenoble 1 (UJF)-Commissariat à l'Énergie Atomique et aux Énergies Alternatives (CEA) - Grenoble-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)
Subjects: Particle physics, Physics and Astronomy (miscellaneous), FOS: Physical sciences, 7. Clean energy, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], Rapidity, ddc:530, 010306 general physics, Nuclear Experiment, Engineering (miscellaneous), Quantum chromodynamics, Physics, Muon, 010308 nuclear & particles physics, High Energy Physics::Phenomenology, HERA, Vertex (geometry), Pseudorapidity, Physique des particules élémentaires, High Energy Physics::Experiment, Vertex detector, Impact parameter
Abstract: Measurements of cross sections for beauty and charm events with dijets and a muon in the photoproduction regime at HERA are presented. The data were collected with the H1 detector and correspond to an integrated luminosity of 179 pb^{-1}. Events with dijets of transverse momentum P_T^{jet1} > 7 GeV and P_T^{jet2} > 6 GeV in the pseudorapidity range -1.5< ��^{jet} < 2.5 in the laboratory frame are selected in the kinematic region of photon virtuality Q^2 < 2.5 GeV^2 and inelasticity 0.2 < y < 0.8. One of the two selected jets must be associated to a muon with P_T^�� > 2.5 GeV in the pseudorapidity range -1.3 < ��^�� < 1.5. The fractions of beauty and charm events are determined using the impact parameters of the muon tracks with respect to the primary vertex and their transverse momentum relative to the axis of the associated jet. Both variables are reconstructed using the H1 vertex detector. The measurements are in agreement with QCD predictions at leading and next-to-leading order., 32 pages, 8 figures, 10 tables
Full Text: View/download PDF

240. Combined Measurement and QCD Analysis of the Inclusive e± Scattering Cross Sections at HERA

Author: F.D. Aaron, DESY ZEUS experiment H1 Experiment, H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, M. Aldaya Martin, C. Alexa, K. Alimujiang, V. Andreev, S. Antonelli, P. Antonioli, A. Antonov, B. Antunovic, M. Arneodo, V. Aushev, O. Bachynska, S. Backovic, A. Baghdasaryan, A. Bamberger, A.N. Barakbæv, G. Barbagli, G. Bari, F. Barreiro, E. Barrelet, W. Bartel, D. Bartsch, M. Basile, K. Begzsuren, O. Behnke, J. Behr, U. Behrens, L. Bellagamba, A. Belousov, A. Bertolin, S. Bhadra, M. Bindi, J.C. Bizot, C. Blohm, T. Bold, E.G. Boos, M. Borodin, K. Borras, D. Boscherini, D. Bot, V. Boudry, S.K. Boutle, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, D. Bruncko, A. Bruni, G. Bruni, B. Brzozowska, A. Bunyatyan, G. Buschhorn, P.J. Bussey, J.M. Butterworth, B. Bylsma, L. Bystritskaya, A. Caldwell, A.J. Campbell, K.B. Cantun Avila, M. Capua, R. Carlin, C.D. Catterall, K. Cerny, V. Cerny, S. Chekanov, V. Chekelian, A. Cholewa, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, J.G. Contreras, A.M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, J.A. Coughlan, G. Cozzika, J. Cvach, G. D'Agostini, J.B. Dainton, F. Dal Corso, K. Daum, M. Deák, J. de Favereau, B. Delcourt, J. del Peso, J. Delvax, R.K. Dementiev, S. De Pasquale, M. Derrick, R.C.E. Devenish, E.A. De Wolf, C. Diaconu, D. Dobur, V. Dodonov, B.A. Dolgoshein, A. Dossanov, A.T. Doyle, V. Drugakov, A. Dubak, L.S. Durkin, S. Dusini, G. Eckerlin, V. Efremenko, S. Egli, Y. Eisenberg, A. Eliseev, E. Elsen, P.F. Ermolov, A. Eskreys, A. Falkiewicz, S. Fang, L. Favart, S. Fazio, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, J. Ferrando, M.I. Ferrero, J. Figiel, D.-J. Fischer, M. Fleischer, A. Fomenko, M. Forrest, B. Foster, S. Fourletov, E. Gabathuler, A. Galas, E. Gallo, A. Garfagnini, J. Gayler, A. Geiser, S. Ghazaryan, I. Gialas, L.K. Gladilin, D. Gladkov, C. Glasman, A. Glazov, I. Glushkov, L. Goerlich, N. Gogitidze, Yu.A. Golubkov, P. Göttlicher, M. Gouzevitch, C. Grab, I. Grabowska-Bold, J. Grebenyuk, T. Greenshaw, I. Gregor, B.R. Grell, G. Grigorescu, G. Grindhammer, G. Grzelak, C. Gwenlan, T. Haas, S. Habib, D. Haidt, W. Hain, R. Hamatsu, J.C. Hart, H. Hartmann, G. Hartner, C. Helebrant, R.C.W. Henderson, E. Hennekemper, H. Henschel, M. Herbst, G. Herrera, M. Hildebrandt, E. Hilger, K.H. Hiller, D. Hochman, D. Hoffmann, U. Holm, R. Hori, R. Horisberger, K. Horton, T. Hreus, A. Hüttmann, G. Iacobucci, Z.A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, M. Jacquet, H.-P. Jakob, X. Janssen, F. Januschek, M. Jimenez, T.W. Jones, L. Jönsson, A.W. Jung, H. Jung, M. Jüngst, I. Kadenko, B. Kahle, B. Kamaluddin, S. Kananov, T. Kanno, M. Kapichine, U. Karshon, F. Karstens, I.I. Katkov, J. Katzy, M. Kaur, P. Kaur, I.R. Kenyon, A. Keramidas, L.A. Khein, C. Kiesling, J.Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, M. Klein, U. Klein, C. Kleinwort, T. Kluge, A. Knutsson, E. Koffeman, R. Kogler, D. Kollar, P. Kooijman, Ie. Korol, I.A. Korzhavina, E. Kosior, P. Kostka, A. Kota\'nski, U. Kötz, H. Kowalski, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, P. Kulinski, O. Kuprash, K. Kutak, M. Kuze, V.A. Kuzmin, M.P.J. Landon, W. Lange, G. Lastovicka-Medin, P. Laycock, A. Lebedev, A. Lee, V. Lendermann, B.B. Levchenko, S. Levonian, A. Levy, G. Li, V. Libov, S. Limentani, T.Y. Ling, K. Lipka, A. Liptaj, M. Lisovyi, B. List, J. List, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, J.H. Loizides, N. Loktionova, K.R. Long, A. Longhin, D. Lontkovskyi, R. Lopez-Fernandez, V. Lubimov, J. Łukasik, O.Yu. Lukina, P. Łuzniak, J. Maeda, S. Magill, A. Makankine, I. Makarenko, E. Malinovski, J. Malka, R. Mankel, P. Marage, A. Margotti, G. Marini, Ll. Marti, J.F. Martin, H.-U. Martyn, A. Mastroberardino, T. Matsumoto, M.C.K. Mattingly, S.J. Maxfield, A. Mehta, I.-A. Melzer-Pellmann, A.B. Meyer, H. Meyer, J. Meyer, S. Miglioranzi, S. Mikocki, I. Milcewicz-Mika, F. Mohamad Idris, V. Monaco, A. Montanari, F. Moreau, A. Morozov, J.D. Morris, J.V. Morris, M.U. Mozer, M. Mudrinic, K. Müller, P. Murín, B. Musgrave, K. Nagano, T. Namsoo, R. Nania, Th. Naumann, P.R. Newman, D. Nicholass, C. Niebuhr, A. Nigro, A. Nikiforov, D. Nikitin, Y. Ning, U. Noor, D. Notz, G. Nowak, K. Nowak, R.J. Nowak, A.E. Nuncio-Quiroz, B.Y. Oh, N. Okazaki, K. Oliver, K. Olkiewicz, J.E. Olsson, Yu. Onishchuk, S. Osman, O. Ota, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, Th. Papadopoulou, K. Papageorgiu, A. Parenti, C. Pascaud, G.D. Patel, E. Paul, J.M. Pawlak, B. Pawlik, O. Pejchal, P.G. Pelfer, A. Pellegrino, E. Perez, W. Perlanski, H. Perrey, A. Petrukhin, I. Picuric, S. Piec, K. Piotrzkowski, D. Pitzl, R. Placakyte, P. Plucinski, B. Pokorny, N.S. Pokrovskiy, R. Polifka, A. Polini, B. Povh, A.S. Proskuryakov, M. Przybycién, V. Radescu, A.J. Rahmat, N. Raicevic, A. Raspiareza, A. Raval, T. Ravdandorj, D.D. Reeder, P. Reimer, B. Reisert, Z. Ren, J. Repond, Y.D. Ri, E. Rizvi, A. Robertson, P. Robmann, B. Roland, P. Roloff, E. Ron, R. Roosen, A. Rostovtsev, M. Rotaru, I. Rubinsky, J.E. Ruiz Tabasco, S. Rusakov, M. Ruspa, R. Sacchi, D. Sálek, A. Salii, U. Samson, D.P.C. Sankey, G. Sartorelli, M. Sauter, E. Sauvan, A.A. Savin, D.H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W.B. Schmidke, S. Schmitt, U. Schneekloth, L. Schœffel, V. Schönberg, A. Schöning, T. Schörner-Sadenius, H.-C. Schultz-Coulon, J. Schwartz, F. Sciulli, F. Sefkow, R.N. Shaw-West, L.M. Shcheglova, R. Shehzadi, S. Shimizu, L.N. Shtarkov, S. Shushkevich, I. Singh, I.O. Skillicorn, T. Sloan, W. Słominski, I. Smiljanic, W.H. Smith, V. Sola, A. Solano, Y. Soloviev, D. Son, P. Sopicki, Iu. Sorokin, V. Sosnovtsev, D. South, V. Spaskov, A. Specka, A. Spiridonov, H. Stadie, L. Stanco, Z. Staykova, M. Steder, B. Stella, A. Stern, T.P. Stewart, A. Stifutkin, G. Stoicea, P. Stopa, U. Straumann, S. Suchkov, D. Sunar, G. Susinno, L. Suszycki, T. Sykora, J. Sztuk, D. Szuba, J. Szuba, A.D. Tapper, E. Tassi, V. Tchoulakov, J. Terrón, T. Theedt, G. Thompson, P.D. Thompson, H. Tiecke, K. Tokushuku, T. Toll, F. Tomasz, J. Tomaszewska, T.H. Tran, D. Traynor, T.N. Trinh, P. Truöl, I. Tsakov, B. Tseepeldorj, T. Tsurugai, M. Turcato, J. Turnau, T. Tymieniecka, K. Urban, C. Uribe-Estrada, A. Valkárov\'ha, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, M. Vázquez, A. Verbytskyi, V. Viazlo, S. Vinokurova, N.N. Vlasov, V. Volchinski, O. Volynets, M. von den Driesch, R. Walczak, W.A.T. Wan Abdullah, D. Wegener, J.J. Whitmore, J. Whyte, L. Wiggers, M. Wing, Ch. Wissing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, E. Wünsch, A.G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, J. Zácek, J. Zálesák, A.F. Zarnecki, L. Zawiejski, O. Zeniaev, W. Zeuner, Z. Zhang, B.O. Zhautykov, A. Zhokin, C. Zhou, A. Zichichi, T. Zimmermann, H. Zohrabyan, M. Zolko, F. Zomer, D.S. Zotkin, F.D. Aaron, DESY ZEUS experiment H1 Experiment, H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, M. Aldaya Martin, C. Alexa, K. Alimujiang, V. Andreev, S. Antonelli, P. Antonioli, A. Antonov, B. Antunovic, M. Arneodo, V. Aushev, O. Bachynska, S. Backovic, A. Baghdasaryan, A. Bamberger, A.N. Barakbæv, G. Barbagli, G. Bari, F. Barreiro, E. Barrelet, W. Bartel, D. Bartsch, M. Basile, K. Begzsuren, O. Behnke, J. Behr, U. Behrens, L. Bellagamba, A. Belousov, A. Bertolin, S. Bhadra, M. Bindi, J.C. Bizot, C. Blohm, T. Bold, E.G. Boos, M. Borodin, K. Borras, D. Boscherini, D. Bot, V. Boudry, S.K. Boutle, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, D. Bruncko, A. Bruni, G. Bruni, B. Brzozowska, A. Bunyatyan, G. Buschhorn, P.J. Bussey, J.M. Butterworth, B. Bylsma, L. Bystritskaya, A. Caldwell, A.J. Campbell, K.B. Cantun Avila, M. Capua, R. Carlin, C.D. Catterall, K. Cerny, V. Cerny, S. Chekanov, V. Chekelian, A. Cholewa, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, J.G. Contreras, A.M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, J.A. Coughlan, G. Cozzika, J. Cvach, G. D'Agostini, J.B. Dainton, F. Dal Corso, K. Daum, M. Deák, J. de Favereau, B. Delcourt, J. del Peso, J. Delvax, R.K. Dementiev, S. De Pasquale, M. Derrick, R.C.E. Devenish, E.A. De Wolf, C. Diaconu, D. Dobur, V. Dodonov, B.A. Dolgoshein, A. Dossanov, A.T. Doyle, V. Drugakov, A. Dubak, L.S. Durkin, S. Dusini, G. Eckerlin, V. Efremenko, S. Egli, Y. Eisenberg, A. Eliseev, E. Elsen, P.F. Ermolov, A. Eskreys, A. Falkiewicz, S. Fang, L. Favart, S. Fazio, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, J. Ferrando, M.I. Ferrero, J. Figiel, D.-J. Fischer, M. Fleischer, A. Fomenko, M. Forrest, B. Foster, S. Fourletov, E. Gabathuler, A. Galas, E. Gallo, A. Garfagnini, J. Gayler, A. Geiser, S. Ghazaryan, I. Gialas, L.K. Gladilin, D. Gladkov, C. Glasman, A. Glazov, I. Glushkov, L. Goerlich, N. Gogitidze, Yu.A. Golubkov, P. Göttlicher, M. Gouzevitch, C. Grab, I. Grabowska-Bold, J. Grebenyuk, T. Greenshaw, I. Gregor, B.R. Grell, G. Grigorescu, G. Grindhammer, G. Grzelak, C. Gwenlan, T. Haas, S. Habib, D. Haidt, W. Hain, R. Hamatsu, J.C. Hart, H. Hartmann, G. Hartner, C. Helebrant, R.C.W. Henderson, E. Hennekemper, H. Henschel, M. Herbst, G. Herrera, M. Hildebrandt, E. Hilger, K.H. Hiller, D. Hochman, D. Hoffmann, U. Holm, R. Hori, R. Horisberger, K. Horton, T. Hreus, A. Hüttmann, G. Iacobucci, Z.A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, M. Jacquet, H.-P. Jakob, X. Janssen, F. Januschek, M. Jimenez, T.W. Jones, L. Jönsson, A.W. Jung, H. Jung, M. Jüngst, I. Kadenko, B. Kahle, B. Kamaluddin, S. Kananov, T. Kanno, M. Kapichine, U. Karshon, F. Karstens, I.I. Katkov, J. Katzy, M. Kaur, P. Kaur, I.R. Kenyon, A. Keramidas, L.A. Khein, C. Kiesling, J.Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, M. Klein, U. Klein, C. Kleinwort, T. Kluge, A. Knutsson, E. Koffeman, R. Kogler, D. Kollar, P. Kooijman, Ie. Korol, I.A. Korzhavina, E. Kosior, P. Kostka, A. Kota\'nski, U. Kötz, H. Kowalski, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, P. Kulinski, O. Kuprash, K. Kutak, M. Kuze, V.A. Kuzmin, M.P.J. Landon, W. Lange, G. Lastovicka-Medin, P. Laycock, A. Lebedev, A. Lee, V. Lendermann, B.B. Levchenko, S. Levonian, A. Levy, G. Li, V. Libov, S. Limentani, T.Y. Ling, K. Lipka, A. Liptaj, M. Lisovyi, B. List, J. List, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, J.H. Loizides, N. Loktionova, K.R. Long, A. Longhin, D. Lontkovskyi, R. Lopez-Fernandez, V. Lubimov, J. Łukasik, O.Yu. Lukina, P. Łuzniak, J. Maeda, S. Magill, A. Makankine, I. Makarenko, E. Malinovski, J. Malka, R. Mankel, P. Marage, A. Margotti, G. Marini, Ll. Marti, J.F. Martin, H.-U. Martyn, A. Mastroberardino, T. Matsumoto, M.C.K. Mattingly, S.J. Maxfield, A. Mehta, I.-A. Melzer-Pellmann, A.B. Meyer, H. Meyer, J. Meyer, S. Miglioranzi, S. Mikocki, I. Milcewicz-Mika, F. Mohamad Idris, V. Monaco, A. Montanari, F. Moreau, A. Morozov, J.D. Morris, J.V. Morris, M.U. Mozer, M. Mudrinic, K. Müller, P. Murín, B. Musgrave, K. Nagano, T. Namsoo, R. Nania, Th. Naumann, P.R. Newman, D. Nicholass, C. Niebuhr, A. Nigro, A. Nikiforov, D. Nikitin, Y. Ning, U. Noor, D. Notz, G. Nowak, K. Nowak, R.J. Nowak, A.E. Nuncio-Quiroz, B.Y. Oh, N. Okazaki, K. Oliver, K. Olkiewicz, J.E. Olsson, Yu. Onishchuk, S. Osman, O. Ota, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, Th. Papadopoulou, K. Papageorgiu, A. Parenti, C. Pascaud, G.D. Patel, E. Paul, J.M. Pawlak, B. Pawlik, O. Pejchal, P.G. Pelfer, A. Pellegrino, E. Perez, W. Perlanski, H. Perrey, A. Petrukhin, I. Picuric, S. Piec, K. Piotrzkowski, D. Pitzl, R. Placakyte, P. Plucinski, B. Pokorny, N.S. Pokrovskiy, R. Polifka, A. Polini, B. Povh, A.S. Proskuryakov, M. Przybycién, V. Radescu, A.J. Rahmat, N. Raicevic, A. Raspiareza, A. Raval, T. Ravdandorj, D.D. Reeder, P. Reimer, B. Reisert, Z. Ren, J. Repond, Y.D. Ri, E. Rizvi, A. Robertson, P. Robmann, B. Roland, P. Roloff, E. Ron, R. Roosen, A. Rostovtsev, M. Rotaru, I. Rubinsky, J.E. Ruiz Tabasco, S. Rusakov, M. Ruspa, R. Sacchi, D. Sálek, A. Salii, U. Samson, D.P.C. Sankey, G. Sartorelli, M. Sauter, E. Sauvan, A.A. Savin, D.H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W.B. Schmidke, S. Schmitt, U. Schneekloth, L. Schœffel, V. Schönberg, A. Schöning, T. Schörner-Sadenius, H.-C. Schultz-Coulon, J. Schwartz, F. Sciulli, F. Sefkow, R.N. Shaw-West, L.M. Shcheglova, R. Shehzadi, S. Shimizu, L.N. Shtarkov, S. Shushkevich, I. Singh, I.O. Skillicorn, T. Sloan, W. Słominski, I. Smiljanic, W.H. Smith, V. Sola, A. Solano, Y. Soloviev, D. Son, P. Sopicki, Iu. Sorokin, V. Sosnovtsev, D. South, V. Spaskov, A. Specka, A. Spiridonov, H. Stadie, L. Stanco, Z. Staykova, M. Steder, B. Stella, A. Stern, T.P. Stewart, A. Stifutkin, G. Stoicea, P. Stopa, U. Straumann, S. Suchkov, D. Sunar, G. Susinno, L. Suszycki, T. Sykora, J. Sztuk, D. Szuba, J. Szuba, A.D. Tapper, E. Tassi, V. Tchoulakov, J. Terrón, T. Theedt, G. Thompson, P.D. Thompson, H. Tiecke, K. Tokushuku, T. Toll, F. Tomasz, J. Tomaszewska, T.H. Tran, D. Traynor, T.N. Trinh, P. Truöl, I. Tsakov, B. Tseepeldorj, T. Tsurugai, M. Turcato, J. Turnau, T. Tymieniecka, K. Urban, C. Uribe-Estrada, A. Valkárov\'ha, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, M. Vázquez, A. Verbytskyi, V. Viazlo, S. Vinokurova, N.N. Vlasov, V. Volchinski, O. Volynets, M. von den Driesch, R. Walczak, W.A.T. Wan Abdullah, D. Wegener, J.J. Whitmore, J. Whyte, L. Wiggers, M. Wing, Ch. Wissing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, E. Wünsch, A.G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, J. Zácek, J. Zálesák, A.F. Zarnecki, L. Zawiejski, O. Zeniaev, W. Zeuner, Z. Zhang, B.O. Zhautykov, A. Zhokin, C. Zhou, A. Zichichi, T. Zimmermann, H. Zohrabyan, M. Zolko, F. Zomer, and D.S. Zotkin

241. Multi-Leptons with High Transverse Momentum at HERA

Author: F.D. Aaron, DESY Forschung Hochenergiephysik, H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, M. Aldaya Martin, C. Alexa, K. Alimujiang, V. Andreev, S. Antonelli, P. Antonioli, A. Antonov, B. Antunovic, M. Arneodo, A. Asmone, V. Aushev, O. Bachynska, S. Backovic, A. Baghdasaryan, A. Bamberger, A.N. Barakbaev, G. Barbagli, G. Bari, F. Barreiro, E. Barrelet, W. Bartel, D. Bartsch, M. Basile, K. Begzsuren, O. Behnke, J. Behr, U. Behrens, L. Bellagamba, A. Belousov, A. Bertolin, S. Bhadra, M. Bindi, J.C. Bizot, C. Blohm, T. Bołd, E.G. Boos, M. Borodin, K. Borras, D. Boscherini, D. Bot, V. Boudry, S.K. Boutle, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, D. Bruncko, A. Bruni, G. Bruni, B. Brzozowska, A. Bunyatyan, G. Buschhorn, P.J. Bussey, J.M. Butterworth, B. Bylsma, L. Bystritskaya, A. Caldwell, A.J. Campbell, K.B. Cantun Avila, M. Capua, R. Carlin, F. Cassol-Brunner, C.D. Catterall, K. Cerny, V. Cerny, S. Chekanov, V. Chekelian, A. Cholewa, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, J.G. Contreras, A.M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, J.A. Coughlan, G. Cozzika, J. Cvach, G. D'Agostini, J.B. Dainton, F. Dal Corso, K. Daum, M. Deák, Y. de Boer, J. de Favereau, B. Delcourt, M. Del Degan, J. del Peso, J. Delvax, R.K. Dementiev, S. De Pasquale, M. Derrick, R.C.E. Devenish, E.A. De Wolf, C. Diaconu, D. Dobur, V. Dodonov, B.A. Dolgoshein, A. Dossanov, A.T. Doyle, V. Drugakov, A. Dubak, L.S. Durkin, S. Dusini, G. Eckerlin, V. Efremenko, S. Egli, Y. Eisenberg, A. Eliseev, E. Elsen, P.F. Ermolov, A. Eskreys, A. Falkiewicz, S. Fang, L. Favart, S. Fazio, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, J. Ferrando, M.I. Ferrero, J. Figiel, D.-J. Fischer, M. Fleischer, A. Fomenko, M. Forrest, B. Foster, S. Fourletov, E. Gabathuler, A. Galas, E. Gallo, A. Garfagnini, J. Gayler, A. Geiser, S. Ghazaryan, I. Gialas, L.K. Gladilin, D. Gladkov, C. Glasman, A. Glazov, I. Glushkov, L. Goerlich, N. Gogitidze, Yu.A. Golubkov, P. Göttlicher, M. Gouzevitch, C. Grab, I. Grabowska-Bołd, J. Grebenyuk, T. Greenshaw, I. Gregor, B.R. Grell, G. Grigorescu, G. Grindhammer, G. Grzelak, C. Gwenlan, T. Haas, S. Habib, D. Haidt, W. Hain, R. Hamatsu, J.C. Hart, H. Hartmann, G. Hartner, C. Helebrant, R.C.W. Henderson, E. Hennekemper, H. Henschel, M. Herbst, G. Herrera, M. Hildebrandt, E. Hilger, K.H. Hiller, D. Hochman, D. Hoffmann, U. Holm, R. Hori, R. Horisberger, K. Horton, T. Hreus, A. Hüttmann, G. Iacobucci, Z.A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, M. Jacquet, H.-P. Jakob, M.E. Janssen, X. Janssen, F. Januschek, M. Jimenez, T.W. Jones, L. Jönsson, A.W. Jung, H. Jung, M. Jüngst, I. Kadenko, B. Kahle, B. Kamaluddin, S. Kananov, T. Kanno, M. Kapichine, U. Karshon, F. Karstens, I.I. Katkov, J. Katzy, M. Kaur, P. Kaur, I.R. Kenyon, A. Keramidas, L.A. Khein, C. Kiesling, J.Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, M. Klein, U. Klein, C. Kleinwort, T. Kluge, A. Knutsson, E. Koffeman, R. Kogler, D. Kollar, P. Kooijman, I.A. Korzhavina, P. Kostka, A. Kota\'nski, U. Kötz, H. Kowalski, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, P. Kulinski, O. Kuprash, K. Kutak, M. Kuze, V.A. Kuzmin, M.P.J. Landon, W. Lange, G. Lastovicka-Medin, P. Laycock, A. Lebedev, A. Lee, G. Leibenguth, V. Lendermann, B.B. Levchenko, S. Levonian, A. Levy, G. Li, V. Libov, S. Limentani, T.Y. Ling, K. Lipka, A. Liptaj, M. Lisovyi, B. List, J. List, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, J.H. Loizides, N. Loktionova, K.R. Long, A. Longhin, D. Lontkovskyi, R. Lopez-Fernandez, V. Lubimov, J. Łukasik, O.Yu. Lukina, P. Łu\.zniak, L. Lytkin, J. Maeda, S. Magill, A. Makankine, I. Makarenko, E. Malinovski, J. Malka, R. Mankel, P. Marage, A. Margotti, G. Marini, Ll. Marti, J.F. Martin, H.-U. Martyn, A. Mastroberardino, T. Matsumoto, M.C.K. Mattingly, S.J. Maxfield, A. Mehta, I.-A. Melzer-Pellmann, A.B. Meyer, H. Meyer, J. Meyer, V. Michels, S. Miglioranzi, S. Mikocki, I. Milcewicz-Mika, F. Mohamad Idris, V. Monaco, A. Montanari, F. Moreau, A. Morozov, J.D. Morris, J.V. Morris, M.U. Mozer, M. Mudrinic, K. Müller, P. Murin, B. Musgrave, K. Nagano, T. Namsoo, R. Nania, Th. Naumann, P.R. Newman, D. Nicholass, C. Niebuhr, A. Nigro, A. Nikiforov, Y. Ning, U. Noor, D. Notz, G. Nowak, K. Nowak, R.J. Nowak, M. Nozicka, A.E. Nuncio-Quiroz, B.Y. Oh, N. Okazaki, K. Oliver, B. Olivier, K. Olkiewicz, J.E. Olsson, S. Osman, O. Ota, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, Th. Papadopoulou, K. Papageorgiu, A. Parenti, C. Pascaud, G.D. Patel, E. Paul, J.M. Pawlak, B. Pawlik, O. Pejchal, P.G. Pelfer, A. Pellegrino, E. Perez, W. Perlanski, H. Perrey, A. Petrukhin, I. Picuric, S. Piec, K. Piotrzkowski, D. Pitzl, R. Placakythe, P. Plucinski, B. Pokorny, N.S. Pokrovskiy, R. Polifka, A. Polini, B. Povh, T. Preda, A.S. Proskuryakov, M. Przybycie\'n, V. Radescu, A.J. Rahmat, N. Raicevic, A. Raspiareza, A. Raval, T. Ravdandorj, D.D. Reeder, P. Reimer, B. Reisert, Z. Ren, J. Repond, Y.D. Ri, E. Rizvi, A. Robertson, P. Robmann, B. Roland, P. Roloff, E. Ron, R. Roosen, A. Rostovtsev, M. Rotaru, I. Rubinsky, J.E. Ruiz Tabasco, Z. Rurikova, S. Rusakov, M. Ruspa, R. Sacchi, D. Sálek, U. Samson, D.P.C. Sankey, G. Sartorelli, M. Sauter, E. Sauvan, A.A. Savin, D.H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W.B. Schmidke, S. Schmitt, U. Schneekloth, L. Schoeffel, V. Schönberg, A. Schöning, T. Schörner-Sadenius, H.-C. Schultz-Coulon, J. Schwartz, F. Sciulli, F. Sefkow, R.N. Shaw-West, L.M. Shcheglova, R. Shehzadi, S. Shimizu, L.N. Shtarkov, S. Shushkevich, I. Singh, I.O. Skillicorn, T. Sloan, W. Słomi\'nski, I. Smiljanic, W.H. Smith, V. Sola, A. Solano, Y. Soloviev, D. Son, P. Sopicki, Iu. Sorokin, V. Sosnovtsev, D. South, V. Spaskov, A. Specka, A. Spiridonov, H. Stadie, L. Stanco, Z. Staykova, M. Steder, B. Stella, A. Stern, T.P. Stewart, A. Stifutkin, G. Stoicea, P. Stopa, U. Straumann, S. Suchkov, D. Sunar, G. Susinno, L. Suszycki, T. Sykora, J. Sztuk, D. Szuba, J. Szuba, A.D. Tapper, E. Tassi, V. Tchoulakov, J. Terrón, T. Theedt, G. Thompson, P.D. Thompson, H. Tiecke, K. Tokushuku, T. Toll, F. Tomasz, J. Tomaszewska, T.H. Tran, D. Traynor, T.N. Trinh, P. Truöl, I. Tsakov, B. Tseepeldorj, T. Tsurugai, M. Turcato, J. Turnau, K. Urban, C. Uribe-Estrada, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, M. Vázquez, A. Verbytskyi, S. Vinokurova, N.N. Vlasov, V. Volchinski, O. Volynets, M. von den Driesch, R. Walczak, W.A.T. Wan Abdullah, D. Wegener, J.J. Whitmore, J. Whyte, L. Wiggers, M. Wing, Ch. Wissing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, E. Wünsch, A.G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, J. Zácek, J. Zálesák, A.F. \.Zarnecki, L. Zawiejski, W. Zeuner, Z. Zhang, B.O. Zhautykov, A. Zhokin, C. Zhou, A. Zichichi, T. Zimmermann, H. Zohrabyan, M. Zolko, F. Zomer, D.S. Zotkin, R. Zus, F.D. Aaron, DESY Forschung Hochenergiephysik, H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, M. Aldaya Martin, C. Alexa, K. Alimujiang, V. Andreev, S. Antonelli, P. Antonioli, A. Antonov, B. Antunovic, M. Arneodo, A. Asmone, V. Aushev, O. Bachynska, S. Backovic, A. Baghdasaryan, A. Bamberger, A.N. Barakbaev, G. Barbagli, G. Bari, F. Barreiro, E. Barrelet, W. Bartel, D. Bartsch, M. Basile, K. Begzsuren, O. Behnke, J. Behr, U. Behrens, L. Bellagamba, A. Belousov, A. Bertolin, S. Bhadra, M. Bindi, J.C. Bizot, C. Blohm, T. Bołd, E.G. Boos, M. Borodin, K. Borras, D. Boscherini, D. Bot, V. Boudry, S.K. Boutle, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, I. Brock, E. Brownson, R. Brugnera, N. Brümmer, D. Bruncko, A. Bruni, G. Bruni, B. Brzozowska, A. Bunyatyan, G. Buschhorn, P.J. Bussey, J.M. Butterworth, B. Bylsma, L. Bystritskaya, A. Caldwell, A.J. Campbell, K.B. Cantun Avila, M. Capua, R. Carlin, F. Cassol-Brunner, C.D. Catterall, K. Cerny, V. Cerny, S. Chekanov, V. Chekelian, A. Cholewa, J. Chwastowski, J. Ciborowski, R. Ciesielski, L. Cifarelli, F. Cindolo, A. Contin, J.G. Contreras, A.M. Cooper-Sarkar, N. Coppola, M. Corradi, F. Corriveau, M. Costa, J.A. Coughlan, G. Cozzika, J. Cvach, G. D'Agostini, J.B. Dainton, F. Dal Corso, K. Daum, M. Deák, Y. de Boer, J. de Favereau, B. Delcourt, M. Del Degan, J. del Peso, J. Delvax, R.K. Dementiev, S. De Pasquale, M. Derrick, R.C.E. Devenish, E.A. De Wolf, C. Diaconu, D. Dobur, V. Dodonov, B.A. Dolgoshein, A. Dossanov, A.T. Doyle, V. Drugakov, A. Dubak, L.S. Durkin, S. Dusini, G. Eckerlin, V. Efremenko, S. Egli, Y. Eisenberg, A. Eliseev, E. Elsen, P.F. Ermolov, A. Eskreys, A. Falkiewicz, S. Fang, L. Favart, S. Fazio, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, J. Ferrando, M.I. Ferrero, J. Figiel, D.-J. Fischer, M. Fleischer, A. Fomenko, M. Forrest, B. Foster, S. Fourletov, E. Gabathuler, A. Galas, E. Gallo, A. Garfagnini, J. Gayler, A. Geiser, S. Ghazaryan, I. Gialas, L.K. Gladilin, D. Gladkov, C. Glasman, A. Glazov, I. Glushkov, L. Goerlich, N. Gogitidze, Yu.A. Golubkov, P. Göttlicher, M. Gouzevitch, C. Grab, I. Grabowska-Bołd, J. Grebenyuk, T. Greenshaw, I. Gregor, B.R. Grell, G. Grigorescu, G. Grindhammer, G. Grzelak, C. Gwenlan, T. Haas, S. Habib, D. Haidt, W. Hain, R. Hamatsu, J.C. Hart, H. Hartmann, G. Hartner, C. Helebrant, R.C.W. Henderson, E. Hennekemper, H. Henschel, M. Herbst, G. Herrera, M. Hildebrandt, E. Hilger, K.H. Hiller, D. Hochman, D. Hoffmann, U. Holm, R. Hori, R. Horisberger, K. Horton, T. Hreus, A. Hüttmann, G. Iacobucci, Z.A. Ibrahim, Y. Iga, R. Ingbir, M. Ishitsuka, M. Jacquet, H.-P. Jakob, M.E. Janssen, X. Janssen, F. Januschek, M. Jimenez, T.W. Jones, L. Jönsson, A.W. Jung, H. Jung, M. Jüngst, I. Kadenko, B. Kahle, B. Kamaluddin, S. Kananov, T. Kanno, M. Kapichine, U. Karshon, F. Karstens, I.I. Katkov, J. Katzy, M. Kaur, P. Kaur, I.R. Kenyon, A. Keramidas, L.A. Khein, C. Kiesling, J.Y. Kim, D. Kisielewska, S. Kitamura, R. Klanner, M. Klein, U. Klein, C. Kleinwort, T. Kluge, A. Knutsson, E. Koffeman, R. Kogler, D. Kollar, P. Kooijman, I.A. Korzhavina, P. Kostka, A. Kota\'nski, U. Kötz, H. Kowalski, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, P. Kulinski, O. Kuprash, K. Kutak, M. Kuze, V.A. Kuzmin, M.P.J. Landon, W. Lange, G. Lastovicka-Medin, P. Laycock, A. Lebedev, A. Lee, G. Leibenguth, V. Lendermann, B.B. Levchenko, S. Levonian, A. Levy, G. Li, V. Libov, S. Limentani, T.Y. Ling, K. Lipka, A. Liptaj, M. Lisovyi, B. List, J. List, E. Lobodzinska, W. Lohmann, B. Löhr, E. Lohrmann, J.H. Loizides, N. Loktionova, K.R. Long, A. Longhin, D. Lontkovskyi, R. Lopez-Fernandez, V. Lubimov, J. Łukasik, O.Yu. Lukina, P. Łu\.zniak, L. Lytkin, J. Maeda, S. Magill, A. Makankine, I. Makarenko, E. Malinovski, J. Malka, R. Mankel, P. Marage, A. Margotti, G. Marini, Ll. Marti, J.F. Martin, H.-U. Martyn, A. Mastroberardino, T. Matsumoto, M.C.K. Mattingly, S.J. Maxfield, A. Mehta, I.-A. Melzer-Pellmann, A.B. Meyer, H. Meyer, J. Meyer, V. Michels, S. Miglioranzi, S. Mikocki, I. Milcewicz-Mika, F. Mohamad Idris, V. Monaco, A. Montanari, F. Moreau, A. Morozov, J.D. Morris, J.V. Morris, M.U. Mozer, M. Mudrinic, K. Müller, P. Murin, B. Musgrave, K. Nagano, T. Namsoo, R. Nania, Th. Naumann, P.R. Newman, D. Nicholass, C. Niebuhr, A. Nigro, A. Nikiforov, Y. Ning, U. Noor, D. Notz, G. Nowak, K. Nowak, R.J. Nowak, M. Nozicka, A.E. Nuncio-Quiroz, B.Y. Oh, N. Okazaki, K. Oliver, B. Olivier, K. Olkiewicz, J.E. Olsson, S. Osman, O. Ota, D. Ozerov, V. Palichik, I. Panagoulias, M. Pandurovic, Th. Papadopoulou, K. Papageorgiu, A. Parenti, C. Pascaud, G.D. Patel, E. Paul, J.M. Pawlak, B. Pawlik, O. Pejchal, P.G. Pelfer, A. Pellegrino, E. Perez, W. Perlanski, H. Perrey, A. Petrukhin, I. Picuric, S. Piec, K. Piotrzkowski, D. Pitzl, R. Placakythe, P. Plucinski, B. Pokorny, N.S. Pokrovskiy, R. Polifka, A. Polini, B. Povh, T. Preda, A.S. Proskuryakov, M. Przybycie\'n, V. Radescu, A.J. Rahmat, N. Raicevic, A. Raspiareza, A. Raval, T. Ravdandorj, D.D. Reeder, P. Reimer, B. Reisert, Z. Ren, J. Repond, Y.D. Ri, E. Rizvi, A. Robertson, P. Robmann, B. Roland, P. Roloff, E. Ron, R. Roosen, A. Rostovtsev, M. Rotaru, I. Rubinsky, J.E. Ruiz Tabasco, Z. Rurikova, S. Rusakov, M. Ruspa, R. Sacchi, D. Sálek, U. Samson, D.P.C. Sankey, G. Sartorelli, M. Sauter, E. Sauvan, A.A. Savin, D.H. Saxon, M. Schioppa, S. Schlenstedt, P. Schleper, W.B. Schmidke, S. Schmitt, U. Schneekloth, L. Schoeffel, V. Schönberg, A. Schöning, T. Schörner-Sadenius, H.-C. Schultz-Coulon, J. Schwartz, F. Sciulli, F. Sefkow, R.N. Shaw-West, L.M. Shcheglova, R. Shehzadi, S. Shimizu, L.N. Shtarkov, S. Shushkevich, I. Singh, I.O. Skillicorn, T. Sloan, W. Słomi\'nski, I. Smiljanic, W.H. Smith, V. Sola, A. Solano, Y. Soloviev, D. Son, P. Sopicki, Iu. Sorokin, V. Sosnovtsev, D. South, V. Spaskov, A. Specka, A. Spiridonov, H. Stadie, L. Stanco, Z. Staykova, M. Steder, B. Stella, A. Stern, T.P. Stewart, A. Stifutkin, G. Stoicea, P. Stopa, U. Straumann, S. Suchkov, D. Sunar, G. Susinno, L. Suszycki, T. Sykora, J. Sztuk, D. Szuba, J. Szuba, A.D. Tapper, E. Tassi, V. Tchoulakov, J. Terrón, T. Theedt, G. Thompson, P.D. Thompson, H. Tiecke, K. Tokushuku, T. Toll, F. Tomasz, J. Tomaszewska, T.H. Tran, D. Traynor, T.N. Trinh, P. Truöl, I. Tsakov, B. Tseepeldorj, T. Tsurugai, M. Turcato, J. Turnau, K. Urban, C. Uribe-Estrada, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, M. Vázquez, A. Verbytskyi, S. Vinokurova, N.N. Vlasov, V. Volchinski, O. Volynets, M. von den Driesch, R. Walczak, W.A.T. Wan Abdullah, D. Wegener, J.J. Whitmore, J. Whyte, L. Wiggers, M. Wing, Ch. Wissing, M. Wlasenko, G. Wolf, H. Wolfe, K. Wrona, E. Wünsch, A.G. Yagües-Molina, S. Yamada, Y. Yamazaki, R. Yoshida, C. Youngman, J. Zácek, J. Zálesák, A.F. \.Zarnecki, L. Zawiejski, W. Zeuner, Z. Zhang, B.O. Zhautykov, A. Zhokin, C. Zhou, A. Zichichi, T. Zimmermann, H. Zohrabyan, M. Zolko, F. Zomer, D.S. Zotkin, and R. Zus
Abstract: Journal article

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

Author: H. Abramowicz, I. Abt, L. Adamczyk, M. Adamus, R. Aggarwal, V. Andreev, S. Antonelli, V. Aushev, A. Baghdasaryan, K. Begzsuren, O. Behnke, U. Behrens, A. Belousov, A. Bertolin, I. Bloch, A. Bolz, V. Boudry, G. Brandt, V. Brisson, D. Britzger, I. Brock, N. H. Brook, R. Brugnera, A. Bruni, A. Buniatyan, P. J. Bussey, A. Bylinkin, L. Bystritskaya, A. Caldwell, A. J. Campbell, K. B. Cantun Avila, M. Capua, C. D. Catterall, K. Cerny, V. Chekelian, J. Chwastowski, J. Ciborowski, R. Ciesielski, J. G. Contreras, A. M. Cooper-Sarkar, M. Corradi, J. Cvach, J. B. Dainton, K. Daum, R. K. Dementiev, R. C. E. Devenish, C. Diaconu, M. Dobre, S. Dusini, G. Eckerlin, S. Egli, E. Elsen, L. Favart, A. Fedotov, J. Feltesse, M. Fleischer, A. Fomenko, B. Foster, E. Gallo, A. Garfagnini, J. Gayler, A. Geiser, A. Gizhko, L. K. Gladilin, L. Goerlich, N. Gogitidze, Yu. A. Golubkov, M. Gouzevitch, C. Grab, A. Grebenyuk, T. Greenshaw, G. Grindhammer, G. Grzelak, C. Gwenlan, D. Haidt, R. C. W. Henderson, J. Hladkỳ, O. Hlushchenko, D. Hochman, D. Hoffmann, R. Horisberger, T. Hreus, F. Huber, Z. A. Ibrahim, Y. Iga, M. Jacquet, X. Janssen, N. Z. Jomhari, A. W. Jung, H. Jung, I. Kadenko, S. Kananov, M. Kapichine, U. Karshon, J. Katzy, P. Kaur, C. Kiesling, D. Kisielewska, R. Klanner, M. Klein, U. Klein, C. Kleinwort, R. Kogler, I. A. Korzhavina, P. Kostka, A. Kotański, N. Kovalchuk, H. Kowalski, J. Kretzschmar, D. Krücker, K. Krüger, B. Krupa, O. Kuprash, M. Kuze, M. P. J. Landon, W. Lange, P. Laycock, A. Lebedev, B. B. Levchenko, S. Levonian, A. Levy, V. Libov, K. Lipka, M. Lisovyi, B. List, J. List, B. Lobodzinski, B. Löhr, E. Lohrmann, A. Longhin, O. Yu. Lukina, I. Makarenko, E. Malinovski, J. Malka, H. -U. Martyn, S. Masciocchi, S. J. Maxfield, A. Mehta, A. B. Meyer, H. Meyer, J. Meyer, S. Mikocki, F. Mohamad Idris, N. Mohammad Nasir, A. Morozov, K. Müller, V. Myronenko, K. Nagano, J. D. Nam, Th. Naumann, P. R. Newman, M. Nicassio, C. Niebuhr, G. Nowak, J. E. Olsson, J. Onderwaater, Yu. Onishchuk, D. Ozerov, C. Pascaud, G. D. Patel, E. Paul, E. Perez, W. Perlański, A. Petrukhin, I. Picuric, H. Pirumov, D. Pitzl, N. S. Pokrovskiy, R. Polifka, A. Polini, M. Przybycień, V. Radescu, N. Raicevic, T. Ravdandorj, P. Reimer, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, M. Rotaru, M. Ruspa, D. Šálek, D. P. C. Sankey, M. Sauter, E. Sauvan, D. H. Saxon, M. Schioppa, S. Schmitt, U. Schneekloth, L. Schoeffel, A. Schöning, T. Schörner-Sadenius, F. Sefkow, I. Selyuzhenkov, L. M. Shcheglova, S. Shushkevich, Yu. Shyrma, I. O. Skillicorn, W. Słomiński, A. Solano, Y. Soloviev, P. Sopicki, D. South, V. Spaskov, A. Specka, L. Stanco, M. Steder, N. Stefaniuk, B. Stella, A. Stern, P. Stopa, U. Straumann, B. Surrow, T. Sykora, J. Sztuk-Dambietz, E. Tassi, P. D. Thompson, K. Tokushuku, J. Tomaszewska, D. Traynor, P. Truöl, I. Tsakov, B. Tseepeldorj, T. Tsurugai, M. Turcato, O. Turkot, T. Tymieniecka, A. Valkárová, C. Vallée, P. Van Mechelen, Y. Vazdik, A. Verbytskyi, W. A. T. Wan Abdullah, D. Wegener, K. Wichmann, M. Wing, E. Wünsch, S. Yamada, Y. Yamazaki, J. Žáček, A. F. Żarnecki, L. Zawiejski, O. Zenaiev, Z. Zhang, B. O. Zhautykov, R. Žlebčík, H. Zohrabyan, and F. Zomer
Subjects: Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract: Abstract Measurements of open charm and beauty production cross sections in deep inelastic ep scattering at HERA from the H1 and ZEUS Collaborations are combined. Reduced cross sections are obtained in the kinematic range of negative four-momentum transfer squared of the photon $$2.5~\hbox {GeV}^2\le Q^2 \le 2000\, \hbox {GeV}^2$$ 2.5GeV2≤Q2≤2000GeV2 and Bjorken scaling variable $$3 \cdot 10^{-5} \le x_\mathrm{Bj} \le 5 \cdot 10^{-2}$$ 3·10-5≤xBj≤5·10-2 . The combination method accounts for the correlations of the statistical and systematic uncertainties among the different datasets. Perturbative QCD calculations are compared to the combined data. A next-to-leading order QCD analysis is performed using these data together with the combined inclusive deep inelastic scattering cross sections from HERA. The running charm- and beauty-quark masses are determined as $$m_c(m_c) = 1.290^{+0.046}_{-0.041} \mathrm{(exp/fit)}$$ mc(mc)=1.290-0.041+0.046(exp/fit) $${}^{+0.062}_{-0.014} \mathrm{(model)}$$ -0.014+0.062(model) $${}^{+0.003}_{-0.031} \mathrm{(parameterisation)}$$ -0.031+0.003(parameterisation) GeV and $$m_b(m_b) = 4.049^{+0.104}_{-0.109} \mathrm{(exp/fit)}$$ mb(mb)=4.049-0.109+0.104(exp/fit) $${}^{+0.090}_{-0.032} \mathrm{(model)}$$ -0.032+0.090(model) $${}^{+0.001}_{-0.031} \mathrm{(parameterisation)}~\mathrm{GeV}$$ -0.031+0.001(parameterisation)GeV .
Published: 2018
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

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

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Publication Type

Journal

Database

Publisher

242 results on '"H.-U. Martyn"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources