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

Aad, G.
•
Abbott, B.
•
Abdallah, J.
altro
GIORDANI, Mario
2015
  • journal article

Periodico
PHYSICAL REVIEW. C, NUCLEAR PHYSICS
Abstract
Measurements of differential cross sections for J/ψ production in p + Pb collisions at (√SNN 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
DOI
10.1103/PhysRevC.92.034904
WOS
WOS:000361118900010
Archivio
http://hdl.handle.net/11390/1097328
info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84954359134
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84954359134&partnerID=40&md5=c560e83fc12f6cfa08b38363af67803d
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metadata only access
Scopus© citazioni
34
Data di acquisizione
Jun 14, 2022
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Web of Science© citazioni
25
Data di acquisizione
Mar 9, 2024
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Data di acquisizione
Apr 19, 2024
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