Measurement of differential J/ψ production cross sections and forward-backward ratios in p + Pb collisions with the ATLAS detector

doi:10.1103/PhysRevC.92.034904

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DOI Доступ к ресурсу на сайте издателя				10.1103/PhysRevC.92.034904

Title: Measurement of differential J/ψ production cross sections and forward-backward ratios in p + Pb collisions with the ATLAS detector
Creator: Abbott, B.
Creator: Abdallah, J.
Creator: Chelkov, G. A.
Creator: Khodinov, A.
Creator: Vaniachine, A.
Creator: Aad, G.
Subject: ATLAS, детектор
Большой адронный коллайдер
протон-протонные столкновения
Date: 2015
DOI: 10.1103/PhysRevC.92.034904
Description: Measurements of differential cross sections for J/ψ production in p + Pb collisions at √SNN = 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-1. The J/ψ mesons are reconstructed in the dimuon decay channel over the transverse momentum range 8 < pT < 30 GeV and over the center-of-mass rapidity range -2.87 < y* < 1.94. Prompt J/ψ are separated from J/ψ resulting from b-hadron decays through an analysis of the distance between the J/ψ decay vertex and the event primary vertex. The differential cross section for production of nonprompt J/ψ 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.

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collection(s): Физический факультет
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Identifier: vtls:000644546
http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000644546
Type: статьи в журналах
Source: Physical Review C. 2015. Vol. 92, № 3. P. 034904-1-034904-23
Language: eng

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Физический факультет Measurement of differential J/ψ production cross sections and forward-backward ratios in p + Pb collisions with the ATLAS detector