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Measurement of jet fragmentation in 5.02 TeV proton–lead and proton–proton collisions with the ATLAS detector

Aaboud, M; Aad, G; Abbott, B; Abdallah, J; Abdinov, O; Abeloos, B; Abidi, SH; ... Anulli, F; + view all (2018) Measurement of jet fragmentation in 5.02 TeV proton–lead and proton–proton collisions with the ATLAS detector. Nuclear Physics A , 978 pp. 65-106. 10.1016/j.nuclphysa.2018.07.006. Green open access

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Abstract

A measurement of the fragmentation functions of jets into charged particles in p+Pb collisions and pp collisions is presented. The analysis utilizes 28 nb−1of p+Pb data and 26 pb−1of pp data, both at sNN= 5.02 TeV, collected in 2013 and 2015, respectively, with the ATLAS detector at the LHC. The measurement is reported in the centre-of-mass frame of the nucleon–nucleon system for jets in the rapidity range |y⁎|<1.6 and with transverse momentum 45 <pT< 260 GeV. Results are presented both as a function of the charged-particle transverse momentum and as a function of the longitudinal momentum fraction of the particle with respect to the jet. The pp fragmentation functions are compared with results from Monte Carlo event generators and two theoretical models. The ratios of the p+Pb to pp fragmentation functions are found to be consistent with unity.

Type: Article
Title: Measurement of jet fragmentation in 5.02 TeV proton–lead and proton–proton collisions with the ATLAS detector
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.nuclphysa.2018.07.006
Publisher version: https://doi.org/10.1016/j.nuclphysa.2018.07.006
Language: English
Additional information: © 2018 CERN for the benefit of the ATLAS Collaboration. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
Keywords: Relativistic heavy-ion collisions, Jets, Fragmentation into hadrons
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy
URI: https://discovery.ucl.ac.uk/id/eprint/1562468
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