Inelastic production of J/ψ mesons in photoproduction and deep inelastic scattering at HERA

The European Physical Journal C, Aug 2010

A measurement is presented of inelastic photo- and electroproduction of J/ψ mesons in ep scattering at HERA. The data were recorded with the H1 detector in the period from 2004 to 2007. Single and double differential cross sections are determined and the helicity distributions of the J/ψ mesons are analysed. The results are compared to theoretical predictions in the colour singlet model and in the framework of non-relativistic QCD. Calculations in the colour singlet model using a k T factorisation ansatz are able to give a good description of the data, while colour singlet model calculations to next-to-leading order in collinear factorisation underestimate the data.

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Inelastic production of J/ψ mesons in photoproduction and deep inelastic scattering at HERA

The H 9 Collaboration F.D. Aaron 11 i C. Alexa 11 V. Andreev B. Antunovic 5 S. Backovic A. Baghdasaryan 2 E. Barrelet W. Bartel 5 K. Begzsuren A. Belousov J.C. Bizot V. Boudry I. Bozovic-Jelisavcic 7 J. Bracinik 6 G. Brandt 5 M. Brinkmann 1 k V. Brisson D. Bruncko A. Bunyatyan 2 3 G. Buschhorn L. Bystritskaya A.J. Campbell 5 K.B. Cantun Avila K. Cerny V. Cerny g V. Chekelian A. Cholewa 5 J.G. Contreras J.A. Coughlan 10 G. Cozzika 4 J. Cvach J.B. Dainton K. Daum 17 M. Dek 5 B. Delcourt J. Delvax 12 13 E.A. De Wolf 12 13 C. Diaconu V. Dodonov 3 A. Dossanov A. Dubak G. Eckerlin 5 V. Efremenko S. Egli A. Eliseev E. Elsen 5 A. Falkiewicz 15 L. Favart 12 13 A. Fedotov R. Felst 5 J. Feltesse 4 h J. Ferencei D.-J. Fischer 5 M. Fleischer 5 A. Fomenko E. Gabathuler J. Gayler 5 S. Ghazaryan 5 A. Glazov 5 L. Goerlich 15 N. Gogitidze M. Gouzevitch 5 C. Grab A. Grebenyuk 5 T. Greenshaw B.R. Grell 5 G. Grindhammer S. Habib 1 D. Haidt 5 C. Helebrant 5 R.C.W. Henderson E. Hennekemper H. Henschel M. Herbst G. Herrera M. Hildebrandt K.H. Hiller D. Hoffmann R. Horisberger T. Hreus 12 13 M. Jacquet X. Janssen 12 13 L. Jnsson A.W. Jung H. Jung 5 12 13 M. Kapichine 8 J. Katzy 5 I.R. Kenyon 6 C. Kiesling M. Klein C. Kleinwort 5 T. Kluge A. Knutsson 5 R. Kogler P. Kostka M. Kraemer 5 K. Krastev 5 J. Kretzschmar A. Kropivnitskaya K. Krger K. Kutak 5 M.P.J. Landon W. Lange G. Latovicka-Medin P. Laycock A. Lebedev V. Lendermann S. Levonian 5 G. Li K. Lipka 5 k A. Liptaj B. List 1 J. List 5 N. Loktionova R. Lopez-Fernandez V. Lubimov A. Makankine 8 E. Malinovski P. Marage 12 13 Ll. Marti 5 H.-U. Martyn 9 S.J. Maxfield A. Mehta A.B. Meyer 5 H. Meyer J. Meyer 5 S. Mikocki 15 I. Milcewicz-Mika 15 F. Moreau A. Morozov 8 J.V. Morris 10 M.U. Mozer 12 13 M. Mudrinic 7 K. Mller P. Murn Th. Naumann P.R. Newman 6 C. Niebuhr 5 A. Nikiforov 5 D. Nikitin 8 G. Nowak 15 K. Nowak J.E. Olsson 5 S. Osman D. Ozerov P. Pahl 5 V. Palichik 8 I. Panagoulias 5 16 w M. Pandurovic 7 Th. Papadopoulou 5 16 w C. Pascaud G.D. Patel E. Perez 4 A. Petrukhin I. Picuric S. Piec D. Pitzl 5 R. Placakyte 5 B. Pokorny R. Polifka B. Povh 3 V. Radescu 0 N. Raicevic A. Raspiareza T. Ravdandorj P. Reimer E. Rizvi P. Robmann R. Roosen 12 13 A. Rostovtsev M. Rotaru 11 J.E. Ruiz Tabasco S. Rusakov D. lek D.P.C. Sankey 10 M. Sauter 0 E. Sauvan S. Schmitt 5 L. Schoeffel 4 A. Schning 0 H.-C. Schultz-Coulon F. Sefkow 5 R.N. Shaw-West 6 L.N. Shtarkov S. Shushkevich T. Sloan I. Smiljanic 7 Y. Soloviev P. Sopicki 15 D. South 14 V. Spaskov 8 A. Specka Z. Staykova 5 M. Steder 5 B. Stella G. Stoicea 11 U. Straumann D. Sunar 5 T. Sykora 12 13 G. Thompson P.D. Thompson 6 T. Toll 1 F. Tomasz T.H. Tran D. Traynor P. Trul I. Tsakov B. Tseepeldorj j J. Turnau 15 K. Urban A. Valkrov C. Valle P. Van Mechelen 12 13 A. Vargas Trevino 5 J. Zlek Z. Zhang A. Zhokin T. Zimmermann H. Zohrabyan 2 F. Zomer 0 Physikalisches Institut, Universitt Heidelberg , Heidelberg, Germany 1 Institut fr Experimentalphysik, Universitt Hamburg , Hamburg, Germany 2 , M. von den Driesch 3 Max-Planck-Institut fr Kernphysik , Heidelberg, Germany 4 CEA, DSM/Irfu, CE-Saclay, Gif-sur-Yvette, France 5 DESY, Hamburg, Germany 6 School of Physics and Astronomy, University of Birmingham , Birmingham, UK 7 Vinca Institute of Nuclear Sciences , Belgrade, Serbia 8 Joint Institute for Nuclear Research , Dubna, Russia 9 I. Physikalisches Institut der RWTH , Aachen, Germany 10 Rutherford Appleton Laboratory , Chilton, Didcot, UK 11 National Institute for Physics and Nuclear Engineering (NIPNE) , Bucharest, Romania 12 Universiteit Antwerpen , Antwerpen, Belgium 13 Inter-University Institute for High Energies ULB-VUB , Brussels, Belgium 14 Institut fr Physik , TU Dortmund, Dortmund, Germany 15 Institute for Nuclear Physics , Cracow, Poland 16 Also at Physics Department, National Technical University , Zografou Campus, 15773 Athens, Greece 17 Also at Rechenzentrum, Universitt Wuppertal , Wuppertal, Ger- many - 16Kirchhoff-Institut fr Physik, Universitt Heidelberg, Heidelberg, Germanyl 17Institute of Experimental Physics, Slovak Academy of Sciences, Koice, Slovak Republicq 18Department of Physics, University of Lancaster, Lancaster, UKm 19Department of Physics, University of Liverpool, Liverpool, UKm 20Queen Mary and Westfield College, London, UKm 21Physics Department, University of Lund, Lund, Swedenr 22CPPM, Aix-Marseille Universit, CNRS/IN2P3, Marseille, France 23Departamento de Fisica Aplicada, CINVESTAV, Mrida, Yucatn, Mexicou 24Departamento de Fisica, CINVESTAV IPN, Mxico City, Mexicou 25Institute for Theoretical and Experimental Physics, Moscow, Russiav 26Lebedev Physical Institute, Moscow, Russiap 27Max-Planck-Institut fr Physik, Mnchen, Germany 28LAL, Universit Paris-Sud, CNRS/IN2P3, Orsay, France 29LLR, Ecole Polytechnique, CNRS/IN2P3, Palaiseau, France 30LPNHE, Universit Pierre et Marie Curie Paris 6, Universit Denis Diderot Paris 7, CNRS/IN2P3, Paris, France 31Faculty of Science, University of Montenegro, Podgorica, Montenegrop 3 (...truncated)


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F. D. Aaron, C. Alexa, V. Andreev, B. Antunovic, S. Backovic, A. Baghdasaryan, E. Barrelet, W. Bartel, K. Begzsuren, A. Belousov, J. C. Bizot, V. Boudry, I. Bozovic-Jelisavcic, J. Bracinik, G. Brandt, M. Brinkmann, V. Brisson, D. Bruncko, A. Bunyatyan, G. Buschhorn, L. Bystritskaya, A. J. Campbell, K. B. Cantun Avila, K. Cerny, V. Cerny, V. Chekelian, A. Cholewa, J. G. Contreras, J. A. Coughlan, G. Cozzika, J. Cvach, J. B. Dainton, K. Daum, M. Deák, B. Delcourt, J. Delvax, E. A. De Wolf, C. Diaconu, V. Dodonov, A. Dossanov, A. Dubak, G. Eckerlin, V. Efremenko, S. Egli, A. Eliseev, E. Elsen, A. Falkiewicz, L. Favart, A. Fedotov, R. Felst, J. Feltesse, J. Ferencei, D.-J. Fischer, M. Fleischer, A. Fomenko, E. Gabathuler, J. Gayler, S. Ghazaryan, A. Glazov, L. Goerlich, N. Gogitidze, M. Gouzevitch, C. Grab, A. Grebenyuk, T. Greenshaw, B. R. Grell, G. Grindhammer, S. Habib, D. Haidt, C. Helebrant, R. C. W. Henderson, E. Hennekemper, H. Henschel, M. Herbst, G. Herrera, M. Hildebrandt, K. H. Hiller, D. Hoffmann, R. Horisberger, T. Hreus, M. Jacquet, X. Janssen, L. Jönsson, A. W. Jung, H. Jung, M. Kapichine, J. Katzy, I. R. Kenyon, C. Kiesling, M. Klein, C. Kleinwort, T. Kluge, A. Knutsson, R. Kogler, P. Kostka, M. Kraemer, K. Krastev, J. Kretzschmar, A. Kropivnitskaya, K. Krüger, K. Kutak, M. P. J. Landon, W. Lange, G. Laštovička-Medin, P. Laycock, A. Lebedev, V. Lendermann, S. Levonian, G. Li, K. Lipka, A. Liptaj, B. List, J. List, N. Loktionova, R. Lopez-Fernandez, V. Lubimov, A. Makankine, E. Malinovski, P. Marage, Ll. Marti, H.-U. Martyn, S. J. Maxfield, A. Mehta, A. B. Meyer, H. Meyer, J. Meyer, S. Mikocki, I. Milcewicz-Mika, F. Moreau, A. Morozov, J. V. Morris, M. U. Mozer, M. Mudrinic, K. Müller, P. Murín, Th. Naumann, P. R. Newman, C. Niebuhr, A. Nikiforov, D. Nikitin, G. Nowak, K. Nowak, J. E. Olsson, S. Osman, D. Ozerov, P. Pahl, V. Palichik, I. Panagoulias, M. Pandurovic, Th. Papadopoulou, C. Pascaud, G. D. Patel, E. Perez, A. Petrukhin, I. Picuric, S. Piec, D. Pitzl, R. Plačakytė, B. Pokorny, R. Polifka, B. Povh, V. Radescu, N. Raicevic, A. Raspiareza, T. Ravdandorj, P. Reimer, E. Rizvi, P. Robmann, R. Roosen, A. Rostovtsev, M. Rotaru, J. E. Ruiz Tabasco, S. Rusakov, D. Šálek, D. P. C. Sankey, M. Sauter, E. Sauvan, S. Schmitt, L. Schoeffel, A. Schöning, H.-C. Schultz-Coulon, F. Sefkow, R. N. Shaw-West, L. N. Shtarkov, S. Shushkevich, T. Sloan, I. Smiljanic, Y. Soloviev, P. Sopicki, D. South, V. Spaskov, A. Specka, Z. Staykova, M. Steder, B. Stella, G. Stoicea, U. Straumann, D. Sunar, T. Sykora, G. Thompson, P. D. Thompson, T. Toll, F. Tomasz, T. H. Tran, D. Traynor, P. Truöl, I. Tsakov, B. Tseepeldorj, J. Turnau, K. Urban, A. Valkárová, C. Vallée, P. Van Mechelen, A. Vargas Trevino, Y. Vazdik, V. Volchinski, M. von den Driesch, D. Wegener, Ch. Wissing, E. Wünsch, J. Žáček, J. Zálešák, Z. Zhang, A. Zhokin, T. Zimmermann, H. Zohrabyan, F. Zomer, The H1 Collaboration. Inelastic production of J/ψ mesons in photoproduction and deep inelastic scattering at HERA, The European Physical Journal C, 2010, pp. 401-420, Volume 68, Issue 3-4, DOI: 10.1140/epjc/s10052-010-1376-5