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Report number arXiv:1810.07655 ; LHCb-PAPER-2018-035 ; CERN-EP-2018-267
Title Study of Υ production in pPb collisions at sNN=8.16 TeV
Author(s) LHCb Collaboration  Mostrar todos os 844 autores
Publication 2018-11-29
Imprint 18 Oct 2018
Number of pages 37
Note All figures and tables, along with any supplementary material and additional information, are available at https://lhcbproject.web.cern.ch/lhcbproject/Publications/LHCbProjectPublic/LHCb-PAPER-2018-035.html
In: JHEP 11 (2018) pp.194
DOI 10.1007/JHEP11(2018)194
10.1007/JHEP02(2020)093 (Erratum)
Subject category Particle Physics - Experiment ; nucl-ex ; Nuclear Physics - Experiment ; hep-ex
Accelerator/Facility, Experiment CERN LHC ; LHCb
Free keywords relativistic heavy ion physics
Abstract The production of Υ(nS) mesons (n=1,2,3) in pPb and Pbp collisions at a centre-of-mass energy per nucleon pair sNN=8.16 TeV is measured by the LHCb experiment, using a data sample corresponding to an integrated luminosity of 31.8 nb1. The Υ(nS) mesons are reconstructed through their decays into two opposite-sign muons. The measurements comprise the differential production cross-sections of the Υ(1S) and Υ(2S) states, their forward-to-backward ratios and nuclear modification factors, performed as a function of the transverse momentum pT and rapidity in the nucleon-nucleon centre-of-mass frame y of the Υ(nS) states, in the kinematic range pT<25 GeV/c and 1.5<y<4.0 (5.0<y<2.5) for pPb (Pbp) collisions. In addition, production cross-sections for Υ(3S) are measured integrated over phase space and the production ratios between all three Υ(nS) states are determined. The measurements are compared to theoretical predictions and suppressions for quarkonium in pPb collisions are observed.
Copyright/License publication: (License: CC-BY-4.0)
Preprint: © 2018-2025 CERN (License: CC-BY-4.0)



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 Record created 2018-10-18, last modified 2024-10-02


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