Energy dependence of exclusive J/psi photoproduction off protons in ultra-peripheral p-Pb collisions at NN=5.02 TeV

0505082 - ÚJF 2020 RIV US eng J - Článek v odborném periodiku
Acharya, S. - Acosta, F. T. - Adam, J. - Adamová, Dagmar - Bielčík, J. - Bielčíková, Jana - Broz, M. - Contreras, J. G. - Horák, D. - Křížek, Filip - Kučera, Vít - Kushpil, Svetlana - Lavička, R. - Mareš, Jiří A. - Petráček, V. - Šumbera, Michal - Závada, Petr … celkem 1025 autorů
Energy dependence of exclusive J/psi photoproduction off protons in ultra-peripheral p-Pb collisions at NN=5.02 TeV.
European Physical Journal C. Roč. 79, č. 5 (2019), č. článku 402. ISSN 1434-6044. E-ISSN 1434-6052
Grant CEP: GA MŠMT(CZ) LTT17018
Výzkumná infrastruktura: CERN-CZ - 90058
Institucionální podpora: RVO:68378271 ; RVO:61389005
Klíčová slova: ALICE collaboration * heavy ion collisions * photoproduction
Obor OECD: Nuclear physics; Particles and field physics (FZU-D)
Impakt faktor: 4.389, rok: 2019
Způsob publikování: Open access
https://doi.org/10.1140/epjc/s10052-019-6816-2

The ALICE Collaboration has measured the energy dependence of exclusive photoproduction of J/psi vector mesons off proton targets in ultra-peripheral p-Pb collisions at a centre-of-mass energy per nucleon pair =5.02 TeV. The e+e- and mu+mu- decay channels are used to measure the cross section as a function of the rapidity of the J/psi in the range -2.5<y<2.7, corresponding to an energy in the gamma p centre-of-mass in the interval 40<W gamma p<550 GeV. The measurements, which are consistent with a power law dependence of the exclusive J/psi photoproduction cross section, are compared to previous results from HERA and the LHC and to several theoretical models. They are found to be compatible with previous measurements.
Trvalý link: http://hdl.handle.net/11104/0296602