CERN Accelerating science

Article
Report number arXiv:1709.03089 ; CERN-EP-2017-197 ; CERN-PH-EP-2017-197
Title Measurement of quarkonium production in proton--lead and proton--proton collisions at 5.02 TeV with the ATLAS detector
Author(s) ATLAS Collaboration  Prikaži svih 2839 autora
Publication 2018-02-28
Imprint 11 Sep 2017
Number of pages 32
Note 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/
In: Eur. Phys. J. C 78 (2018) pp.171
DOI 10.1140/epjc/s10052-018-5624-4
10.1140/epjc/s10052-018-5624-4
Subject category Particle Physics - Experiment ; hep-ex ; Nuclear Physics - Experiment ; nucl-ex
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords relativistic heavy ion physics ; quarkonium ; experimental results
Abstract 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 nb1 and 25 pb1 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(1S). No significant modification of the J/ψ production is observed while Υ(1S) 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.
Related document supersedes: ATLAS-CONF-2015-050, ATLAS-CONF-2015-023
Copyright/License Preprint: © 2017-2025 CERN (License: CC-BY-4.0)

Corresponding record in: Inspire
Email contact: fmalek@lpsc.in2p3.fr


 Zapis kreiran 2017-09-11, zadnja izmjena 2024-09-28


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