Çetin, Serkant Ali2020-11-182020-11-182018-02-281434-60521434-6044https://hdl.handle.net/11411/2668https://doi.org/10.1140/epjc/s10052-018-5624-4The modification of the production of J/psi, psi(2S), and gamma (nS) (n = 1, 2, 3) in p+Pb collisions with respect to their production in pp collisions has been studied. The p+Pb and pp datasets used in this paper correspond to integrated luminosities of 28 nb(-1) and 25 pb(-1) respectively, collected in 2013 and 2015 by the ATLAS detector at the LHC, both at a centre-of-mass energy per nucleon pair of 5.02 TeV. The quarkonium states are reconstructed in the dimuon decay channel. The yields of J/psi and psi(2S) are separated into prompt and non-prompt sources. The measured quarkonium differential cross sections are presented as a function of rapidity and transverse momentum, as is the nuclear modification factor, R-pPb for J/psi and psi (nS). No significant modification of the J/psi production is observed while gamma (nS) production is found to be suppressed at low transverse momentum in p+Pb collisions relative to pp collisions. The production of excited charmonium and bottomonium states is found to be suppressed relative to that of the ground states in central p+Pb collisions.eninfo:eu-repo/semantics/openAccessJ/PSI PRODUCTIONCHARMONIUM PRODUCTIONPP COLLISIONSPROMPT J/PSIABSORPTIONArticle2-s2.0-8504278671510.1140/epjc/s10052-018-5624-431265000Q1WOS:000426836000001