Measurement of differentialJ/ψproduction cross sections and forward-backward ratios inp + Pbcollisions with the ATLAS detector

2015/05/29 by ATLAS Collaboration, G. Aad, B. Abbott +98 · 6 citations
Physics and Astronomy · #Combinatorics #Graph #Hadron #High-Energy Particle Collisions Research #Large Hadron Collider #Meson #Nuclear physics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Rapidity #Vertex (graph theory) #hep-ex #nucl-ex

paper · pdf · doi:10.1103/physrevc.92.034904

published as Phys. Rev. C 92, 034904 (2015) · 13 pages plus author list + cover pages (26 pages total), 8 figures, 8 tables, submitted to Phys. Rev. C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/HION-2013-07/

arxiv created 2015/05/29 · openalex publication_date 2015/09/14 · arxiv updated 2015/10/23 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/06

Abstract

Measurements of differential cross sections for J/\ensuremathψ production in p+Pb collisions at √s_NN=5.02 TeV at the CERN Large Hadron Collider with the ATLAS detector are presented. The data set used corresponds to an integrated luminosity of 28.1 nb^\ensuremath-1. The J/\ensuremathψ mesons are reconstructed in the dimuon decay channel over the transverse momentum range 8<p_T<30\phantom\rule4.pt0exGeV and over the center-of-mass rapidity range \ensuremath-2.87<y^*<1.94. Prompt J/\ensuremathψ are separated from J/\ensuremathψ resulting from b-hadron decays through an analysis of the distance between the J/\ensuremathψ decay vertex and the event primary vertex. The differential cross section for production of nonprompt J/\ensuremathψ is compared to a FONLL calculation that does not include nuclear effects. Forward-backward production ratios are presented and compared to theoretical predictions. These results complement previously published results by covering a region of higher transverse momentum and more central rapidity. They thus constrain the kinematic dependence of nuclear modifications of charmonium and b-quark production in p+Pb collisions.

Citations

• J/ψ production and nuclear effects in p-Pb collisions at √s_NN = 5.02 TeV
• Measurement of the production cross-section of ψ(2S) → J/ψ(→μ + μ − )π + π − in pp collisions at s √(s) = 7 TeV at ATLAS
• Evidence for deconfinement of quarks and gluons from the J/ψ suppression pattern measured in Pb-Pb collisions at the CERN-SPS
• Kinematic distributions and nuclear effects of J/ψ production in 920 GeV fixed-target proton-nucleus collisions
• Study of J/ψ production and cold nuclear matter effects in pPb collisions at √s_NN = 5 TeV

Cited by

• Determination of Nuclear PDFs using Markov Chain Monte Carlo Methods
• Experimental overview on quarkonium production
• Bc(*)-meson production via the proton-nucleus and the nucleus-nucleus collision modes at the colliders RHIC and LHC
• Measurement of prompt ψ(2S) production cross sections in proton–lead and proton–proton collisions at sNN=5.02<mml:mspace width="0.2em"/>TeV
• J/Ψ and Ψ(2S) Production in p-Pb Collisions at 5.02 TeV with ATLAS
• Heavy-ion collisions at the Large Hadron Collider: A review of the results from Run 1