Measurement of dijet kT 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 dijet kT in p–Pb collisions at √sNN = 5.02 TeV. Physics Letters B, 746. pp. 385-395. ISSN 0370-2693

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Abstract

A measurement of dijet correlations in p–Pb collisions at √sNN = 5.02 TeV with the ALICE detector is presented. Jets are reconstructed from charged particles measured in the central tracking detectors and neutral energy deposited in the electromagnetic calorimeter. The transverse momentum of the full jet (clustered from charged and neutral constituents) and charged jet (clustered from charged particles only) is corrected event-by-event for the contribution of the underlying event, while corrections for underlying event fluctuations and finite detector resolution are applied on an inclusive basis. A projection of the dijet transverse momentum, kTy = pch+ne T,jet sin(ϕdijet) with ϕdijet the azimuthal angle between a full and charged jet and pch+ne T,jet the transverse momentum of the full jet, is used to study nuclear matter effects in p–Pb collisions. This observable is sensitive to the acoplanarity of dijet production and its potential modification in p–Pb collisions with respect to pp collisions. Measurements of the dijet kTy as a function of the transverse momentum of the full and recoil charged jet, and the event multiplicity are presented. No significant modification of kTy due to nuclear matter effects in p–Pb collisions with respect to the event multiplicity or a PYTHIA8 reference is observed.

Item Type: Article
Keywords: nuclear experiment (nucl-ex), high energy physics - experiment (hep-ex)
Date: 30 June 2015
Subjects: NATURAL SCIENCES > 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 11 March 2015. Received in revised form 5 May 2015. Accepted 16 May 2015. Available online 19 May 2015.
Divisions: Faculty of Science > Department of Physics
Publisher: Elsevier
Depositing User: Nikola Poljak
Date Deposited: 30 May 2016 11:32
Last Modified: 11 Mar 2017 19:31
URI: http://digre.pmf.unizg.hr/id/eprint/4871

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