Measurement of charged jet production cross sections and nuclear modification 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 Zyzak, M. (ALICE Collaboration) (2015) Measurement of charged jet production cross sections and nuclear modification in p–Pb collisions at √sNN = 5.02 TeV. Physics Letters B, 749. pp. 68-81. ISSN 0370-2693

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Abstract

Charged jet production cross sections in p–Pb collisions at √sNN = 5.02 TeV measured with the ALICE detector at the LHC are presented. Using the anti-kT algorithm, jets have been reconstructed in the central rapidity region from charged particles with resolution parameters R = 0.2 and R = 0.4. The reconstructed jets have been corrected for detector effects and the underlying event background. To calculate the nuclear modification factor, RpPb, of charged jets in p–Pb collisions, a pp reference was constructed by scaling previously measured charged jet spectra at √s = 7 TeV. In the transverse momentum range 20 ≤ pT, ch jet ≤ 120 GeV/c, RpPb is found to be consistent with unity, indicating the absence of strong nuclear matter effects on jet production. Major modifications to the radial jet structure are probed via the ratio of jet production cross sections reconstructed with the two different resolution parameters. This ratio is found to be similar to the measurement in pp collisions at √s = 7 TeV and to the expectations from PYTHIA pp simulations and NLO pQCD calculations at √sNN = 5.02 TeV.

Item Type: Article
Keywords: LHC, p–Pb collisions, charged jets
Date: 7 October 2015
Subjects: NATURAL SCIENCES > Physics > Nuclear Physics
Additional Information: © 2015 CERN for the benefit of the ALICE Collaboration. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. Received 3 March 2015; Received in revised form 21 July 2015; Accepted 21 July 2015; Available online 26 July 2015.
Divisions: Faculty of Science > Department of Physics
Publisher: Elsevier
Depositing User: Nikola Poljak
Date Deposited: 05 Feb 2016 11:40
Last Modified: 30 May 2016 13:03
URI: http://digre.pmf.unizg.hr/id/eprint/4507

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