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Article Abstract
The modification of the production of , , and ( ) in +Pb collisions with respect to their production in collisions has been studied. The +Pb and datasets used in this paper correspond to integrated luminosities of and 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 and 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, for and . No significant modification of the production is observed while production is found to be suppressed at low transverse momentum in +Pb collisions relative to collisions. The production of excited charmonium and bottomonium states is found to be suppressed relative to that of the ground states in central +Pb collisions.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6560743 | PMC |
| http://dx.doi.org/10.1140/epjc/s10052-018-5624-4 | DOI Listing |
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