Inclusive, prompt and non-prompt J/ψ production at mid-rapidity in Pb-Pb collisions at √sNN = 2.76 TeV

Adam, J. and Antičić, Tome and Erhardt, Filip and Gotovac, Sven and Mudnić, Eugen and Planinić, Mirko and Poljak, Nikola and Simatović, Goran and Utrobičić, Antonija and Vicković, Linda and Zyzak, M. (ALICE Collaboration) (2015) Inclusive, prompt and non-prompt J/ψ production at mid-rapidity in Pb-Pb collisions at √sNN = 2.76 TeV. Journal of High Energy Physics, 7. pp. 51-32. ISSN 1029-8479

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Abstract

The transverse momentum (pT) dependence of the nuclear modification factor RAA and the centrality dependence of the average transverse momentum hpTi for inclusive J/ψ have been measured with ALICE for Pb-Pb collisions at √sNN = 2.76 TeV in the e +e − decay channel at mid-rapidity (|y| < 0.8). The hpTi is significantly smaller than the one observed for pp collisions at the same centre-of-mass energy. Consistently, an increase of RAA is observed towards low pT. These observations might be indicative of a sizable contribution of charm quark coalescence to the J/ψ production. Additionally, the fraction of non-prompt J/ψ from beauty hadron decays, fB, has been determined in the region 1.5 < pT < 10 GeV/c in three centrality intervals. No significant centrality dependence of fB is observed. Finally, the RAA of non-prompt J/ψ is discussed and compared with model predictions. The nuclear modification in

Item Type: Article
Keywords: hadron-hadron scattering
Date: July 2015
Subjects: NATURAL SCIENCES > Physics
Additional Information: Open Access. © Copyright CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3. Received: April 28, 2015. Accepted: June 17, 2015. Published: July 10, 2015.
Divisions: Faculty of Science > Department of Physics
Publisher: Springer
Depositing User: Nikola Poljak
Date Deposited: 29 May 2016 16:22
Last Modified: 29 May 2016 16:22
URI: http://digre.pmf.unizg.hr/id/eprint/4864

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