Measurement of quarkonium production in proton–lead and proton–proton collisions at 5.02 TeV with the ATLAS detector Aaboud, M. Aguilar Saavedra, Juan Antonio Atlas Collaboration The modification of the production of J/ψ, ψ(2S), and Υ (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/ψ and ψ(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, RpPb for J/ψ and Υ (nS). No significant modification of the J/ψ production is observed while Υ (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. 2018-05-29T12:37:10Z 2018-05-29T12:37:10Z 2018-02-28 info:eu-repo/semantics/article Aaboud, M; Aguilar-Saavedra, Juan Antonio; Atlas Collaboration. Measurement of quarkonium production in proton–lead and proton–proton collisions at 5.02 TeV with the ATLAS detector. Eur. Phys. J. C (2018) 78:171 [http://hdl.handle.net/10481/51189] http://hdl.handle.net/10481/51189 doi.org/10.1140/epjc/s10052-018-5624-4 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España Springer