Measurement of Inelastic J/ψ and ψ′ Photoproduction at HERA

Authors

• H. Abramowicz, Tel Aviv University
• I. Abt, Max Planck Institute for Physics (Werner Heisenberg Institute)
• L. Adamczyk, AGH University of Science and Technology
• M. Adamus, National Centre for Nuclear Research (NCBJ)
• R. Aggarwal, Panjab University
• S. Antonelli, Alma Mater Studiorum Università di Bologna
• P. Antonioli, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
• A. Antonov, National Research Nuclear University MEPhI
• M. Arneodo, Università degli Studi del Piemonte Orientale "Amedeo Avogadro"
• O. Arslan, Universität Bonn
• V. Aushev, Institute of Nuclear Research, National Academy of Sciences in Ukraine
• Y. Aushev, Taras Shevchenko National University of Kyiv
• O. Bachynska, Deutsches Elektronen-Synchrotron (DESY)
• A. Bamberger, Universität Freiburg im Breisgau
• A. N. Barakbaev, Ministry of Education and Science of the Republic of Kazakhstan
• G. Barbagli, Istituto Nazionale di Fisica Nucleare, Sezione di Firenze
• G. Bari, Istituto Nazionale di Fisica Nucleare, Sezione di Bologna
• F. Barreiro, Universidad Autónoma de Madrid
• N. Bartosik, Deutsches Elektronen-Synchrotron (DESY)
• D. Bartsch, Universität Bonn
• M. Basile, Alma Mater Studiorum Università di Bologna
• O. Behnke, Deutsches Elektronen-Synchrotron (DESY)
• J. Behr, Deutsches Elektronen-Synchrotron (DESY)
• U. Behrens, Deutsches Elektronen-Synchrotron (DESY)
• L. Bellagamba, Istituto Nazionale di Fisica Nucleare, Sezione di BolognaFollow
• A. Bertolin, Istituto Nazionale Di Fisica Nucleare, Sezione di Padova
• S. Bhadra, York University
• M. Bindi, Alma Mater Studiorum Università di Bologna
• C. Blohm, Deutsches Elektronen-Synchrotron (DESY)
• V. Bokhonov, Institute of Nuclear Research, National Academy of Sciences in Ukraine
• T. Bołd, AGH University of Science and Technology
• Margarita C. K. Mattingly, Andrews UniversityFollow

Document Type

Article

Publication Date

8-27-2013

Keywords

Lepton-Nucleon Scattering, QCD

Abstract

The cross sections for inelastic photoproduction of J/ψ and ψ′ mesons have been measured in ep collisions with the ZEUS detector at HERA, using an integrated luminosity of 468 pb-1 collected in the period 1996-2007. The ψ′ to J/ψ cross section ratio was measured in the range 0.55 < z < 0.9 and 60 < W < 190 GeV as a function of W, z and pT. Here W denotes the photon-proton centre-of-mass energy, z is the fraction of the incident photon energy carried by the meson and p T is the transverse momentum of the meson with respect to the beam axis. The J/ψ cross sections were measured for 0.1 < z < 0.9, 60 < W < 240 GeV and pT > 1 GeV. Theoretical predictions within the non-relativistic QCD framework including NLO colour-singlet and colour-octet contributions were compared to the data, as were predictions based on the k T-factorisation approach. © 2013 SISSA.

Journal Title

Journal of High Energy Physics

Volume

2013

Issue

2

First Page

1

Last Page

30

DOI

https://doi.org/10.1007/JHEP02(2013)071

First Department

Physics

Recommended Citation

Abramowicz, H.; Abt, I.; Adamczyk, L.; Adamus, M.; Aggarwal, R.; Antonelli, S.; Antonioli, P.; Antonov, A.; Arneodo, M.; Arslan, O.; Aushev, V.; Aushev, Y.; Bachynska, O.; Bamberger, A.; Barakbaev, A. N.; Barbagli, G.; Bari, G.; Barreiro, F.; Bartosik, N.; Bartsch, D.; Basile, M.; Behnke, O.; Behr, J.; Behrens, U.; Bellagamba, L.; Bertolin, A.; Bhadra, S.; Bindi, M.; Blohm, C.; Bokhonov, V.; Bołd, T.; and Mattingly, Margarita C. K., "Measurement of Inelastic J/ψ and ψ′ Photoproduction at HERA" (2013). Faculty Publications. 1646.
https://digitalcommons.andrews.edu/pubs/1646

Acknowledgements

Retrieved January 29, 2021 from https://link.springer.com/article/10.1007/JHEP02(2013)071