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Committee for collaboration of Czech Republic

with Joint Institute for Nuclear Research in Dubna Login
Measurement of exclusive Upsilon photoproduction from protons in pPb collisions at root sNN=5.02 Tev

Author
Sirunyan A.M. Yerevan Physics Institute, Armenia
Finger Miroslav, prof. Ing. DrSc. Faculty of Mathematics and Physics, Charles University in Prague
Finger Michael, M.Sc. CSc. Faculty of Mathematics and Physics, Charles University in Prague, JINR Dubna
Afanasyev L.G. JINR
et al.  different institutions

Year
2019

Scientific journal
EUROPEAN PHYSICAL JOURNAL C 79 (3) 277

Web


Abstract
The exclusive photoproduction of (nS) meson states from protons, (nS) p (with n = 1, 2, 3), is studied in ultraperipheral pPb collisions at a centre-of-mass energy per nucleon pair of The measurement is performed using the decay mode, with data collected by the CMS experiment corresponding to an integrated luminosity of 32.6 nb(-1). Differential cross sections as functions of the nS) transverse momentum squared and rapidity y, are presented. The 1S) photoproduction cross section is extracted in the rapidity range < 2.2, which corresponds to photon-proton centre-of-mass energies in the range 91 W < 826 GeV. The data are compared to theoretical predictions based on perturbative quantum chromodynamics and to previous measurements.

Cite article as:
A. Sirunyan, M. Finger, M. Finger, L. Afanasyev, . et al., "Measurement of exclusive Upsilon photoproduction from protons in pPb collisions at root sNN=5.02 Tev ", EUROPEAN PHYSICAL JOURNAL C 79 (3) 277 (2019)