W and Z boson production in p-Pb collisions at √sNN = 5.02 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 Zmeskal, J. (ALICE Collaboration) (2017) W and Z boson production in p-Pb collisions at √sNN = 5.02 TeV. Journal of High Energy Physics, 2017 (2). Art.No.77-27. ISSN 1029-8479

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Abstract

The W and Z boson production was measured via the muonic decay channel in proton-lead collisions at √ sNN = 5.02 TeV at the Large Hadron Collider with the ALICE detector. The measurement covers backward (−4.46 < ycms < −2.96) and forward (2.03 < ycms < 3.53) rapidity regions, corresponding to Pb-going and p-going directions, respectively. The Z-boson production cross section, with dimuon invariant mass of 60 < mµµ < 120 GeV/c 2 and muon transverse momentum (p µ T ) larger than 20 GeV/c, is measured. The production cross section and charge asymmetry of muons from W-boson decays with p µ T > 10 GeV/c are determined. The results are compared to theoretical calculations both with and without including the nuclear modification of the parton distribution functions. The W-boson production is also studied as a function of the collision centrality: the cross section of muons from W-boson decays is found to scale with the average number of binary nucleon-nucleon collisions within uncertainties.

Item Type: Article
Keywords: heavy ion experiments
Date: 2017
Subjects: NATURAL SCIENCES > Physics
Additional Information: 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: November 11, 2016. Accepted: February 4, 2017. Published: February 15, 2017.
Divisions: Faculty of Science > Department of Physics
Publisher: Springer
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 13 Nov 2017 20:05
Last Modified: 13 Nov 2017 20:05
URI: http://digre.pmf.unizg.hr/id/eprint/5690

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