Measurement of quarkonium production in proton-lead and proton-proton collisions at 5.02 TeV with the ATLAS detector



Aaboud, M, Aad, G, Abbott, B, Abdallah, J, Abdinov, O, Abeloos, B, Abidi, SH, AbouZeid, OS, Abraham, NL, Abramowicz, H
et al (show 2836 more authors) (2018) Measurement of quarkonium production in proton-lead and proton-proton collisions at 5.02 TeV with the ATLAS detector. EUROPEAN PHYSICAL JOURNAL C, 78 (3). 171-.

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Abstract

The modification of the production of J / ψ , ψ ( 2 S ) , and Υ ( n S ) ( n = 1 , 2 , 3 ) in <i>p</i>+Pb collisions with respect to their production in <i>pp</i> collisions has been studied. The <i>p</i>+Pb and <i>pp</i> 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 ( 2 S ) 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 p Pb for J / ψ and Υ ( n S ) . No significant modification of the J / ψ production is observed while Υ ( n S ) production is found to be suppressed at low transverse momentum in <i>p</i>+Pb collisions relative to <i>pp</i> collisions. The production of excited charmonium and bottomonium states is found to be suppressed relative to that of the ground states in central <i>p</i>+Pb collisions.

Item Type: Article
Additional Information: 46 pages in total, author list starting page 30, 17 figures, 2 tables, published version, all figures including auxiliary figures are available at https://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2014-05/
Uncontrolled Keywords: ATLAS Collaboration
Depositing User: Symplectic Admin
Date Deposited: 10 Apr 2018 06:23
Last Modified: 25 Jan 2024 09:03
DOI: 10.1140/epjc/s10052-018-5624-4
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3019978