Measurement of angular and momentum distributions of charged particles within and around jets in Pb plus Pb and pp collisions at root s(NN)=5.02 TeV with ATLAS at the LHC

Studies of the fragmentation of jets into charged particles in heavy-ion collisions can help in understanding the mechanism of jet quenching by the hot and dense QCD matter created in such collisions, the quark-gluon plasma. These proceedings present a measurement of the angular distribution of char...

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Bibliographic Details
Published in:Nuclear physics. A 2019, Vol.982, p.177
Main Authors: Puri, Akshat, Jensen, Bengt, Ohm, Christian, Ripellino, Giulia, Sidebo, P. Edvin, Strandberg, Jonas, Zwalinski, L.
Format: Article
Language:English
Subjects:
fragmentation functions
jet shapes
jets
Online Access:Get full text
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Summary:Studies of the fragmentation of jets into charged particles in heavy-ion collisions can help in understanding the mechanism of jet quenching by the hot and dense QCD matter created in such collisions, the quark-gluon plasma. These proceedings present a measurement of the angular distribution of charged particles around the jet axis in root s(NN) = 5.02 TeV Pb+Pb and pp collisions, done using the ATLAS detector at the LHC. The measurement is performed inside jets reconstructed with the anti-k(t) algorithm with radius parameter R = 0.4, and is extended to regions outside the jet cone. Results are presented as a function of Pb+Pb collision centrality, and both jet and charged-particle transverse momenta.
ISSN:0375-9474
1873-1554
DOI:10.1016/j.nuclphysa.2018.09.021