Production of inclusive Υ (1S) and Υ (2S) in p–Pb collisions at √sNN = 5.02 TeV

Abelev, B. and Planinić, Mirko and Poljak, Nikola and Simatović, Goran and Zyzak, M. (ALICE collaboration) (2015) Production of inclusive Υ (1S) and Υ (2S) in p–Pb collisions at √sNN = 5.02 TeV. Physics Letters B, 740. pp. 105-117. ISSN 0370-2693

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We report on the production of inclusive Υ (1S) and Υ (2S) in p–Pb collisions at √sNN = 5.02 TeV at the LHC. The measurement is performed with the ALICE detector at backward (−4.46 < ycms < −2.96) and forward (2.03 < ycms < 3.53) rapidity down to zero transverse momentum. The production cross sections of the Υ (1S) and Υ (2S) are presented, as well as the nuclear modification factor and the ratio of the forward to backward yields of Υ (1S). A suppression of the inclusive Υ (1S) yield in p–Pb collisions with respect to the yield from pp collisions scaled by the number of binary nucleon–nucleon collisions is observed at forward rapidity but not at backward rapidity. The results are compared to theoretical model calculations including nuclear shadowing or partonic energy loss effects.

Item Type: Article
Keywords: Upsilon, p-Pb, ALICE
Date: January 2015
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2014 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP3. Received 9 October 2014. Received in revised form 19 November 2014. Accepted 19 November 2014. Available online 22 November 2014.
Divisions: Faculty of Science > Department of Physics
Publisher: Elsevier
Depositing User: Nikola Poljak
Date Deposited: 02 Apr 2015 10:39
Last Modified: 29 May 2016 20:38

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