J/ ψ production and nuclear effects in p-Pb collisions at=5.02 TeV

Abelev, B. and Antičić, Tome and Gotovac, Sven and Mudnić, Eugen and Planinić, Mirko and Simatović, Goran and Šuša, Tatjana and Vicković, Linda and Zyzak, M. (ALICE Collaboration) (2014) J/ ψ production and nuclear effects in p-Pb collisions at=5.02 TeV. Journal of High Energy Physics, 2014 (2). p. 73. ISSN 1029-8479

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Abstract

Inclusive J/ψ production has been studied with the ALICE detector in p-Pb collisions at the nucleon–nucleon center of mass energy √ sNN = 5.02 TeV at the CERN LHC. The measurement is performed in the center of mass rapidity domains 2.03 < ycms < 3.53 and −4.46 < ycms < −2.96, down to zero transverse momentum, studying the µ +µ − decay mode. In this paper, the J/ψ production cross section and the nuclear modification factor RpPb for the rapidities under study are presented. While at forward rapidity, corresponding to the proton direction, a suppression of the J/ψ yield with respect to binary-scaled pp collisions is observed, in the backward region no suppression is present. The ratio of the forward and backward yields is also measured differentially in rapidity and transverse momentum. Theoretical predictions based on nuclear shadowing, as well as on models including, in addition, a contribution from partonic energy loss, are in fair agreement with the experimental results.

Item Type: Article
Keywords: relativistic heavy ion physics; heavy Ions; charm physics
Date: 2014
Subjects: NATURAL SCIENCES > Physics
Additional Information: © The Author(s) 2014. Open Access, Copyright CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited. Received: September 2, 2013. Revised: January 16, 2014. Accepted: February 6, 2014. Published: February 18, 2014.
Divisions: Faculty of Science > Department of Physics
Project code: 119-0982887-1006, 098-0982887-2878
Publisher: Springer
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 08 Dec 2017 13:53
Last Modified: 08 Dec 2017 13:53
URI: http://digre.pmf.unizg.hr/id/eprint/5744

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