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Title:	Jet shapes of isolated photon-tagged jets in Pb-Pb and pp collisions at √sNN = 5.02 TeV
Authors:	Sirunyan, A. M.; Cabrillo, I. J. ; Calderon, Alicia ; Chazin Quero, B.; Duarte Campderros, J. ; Fernández, M. ; Fernández-Manteca, Pedro; García Alonso, A.; García-Ferrero, J. ; Gómez, G. ; López Virto, A. ; Marco, Jesús ; Martínez-Rivero, Celso ; Martínez Ruiz del Arbol, P. ; Matorras, Francisco ; Piedra, Jonatan ; Prieels, C.; Rodrigo, Teresa ; Ruiz Jimeno, Alberto ; Scodellaro, Luca ; Trevisani, N. ; Vila, Iván ; Vilar, Rocío
Issue Date:	2019
Publisher:	American Physical Society
Citation:	Physical Review Letters 122(15): 152001 (2019)
Abstract:	The modification of jet shapes in Pb-Pb collisions, relative to those in pp collisions, is studied for jets associated with an isolated photon. The data were collected with the CMS detector at the LHC at a nucleon-nucleon center-of-mass energy of 5.02 TeV. Jet shapes are constructed from charged particles with track transverse momenta (pT) above 1 GeV/c in annuli around the axes of jets with pTjet>30 GeV/c associated with an isolated photon with pTγ>60 GeV/c. The jet shape distributions are consistent between peripheral Pb-Pb and pp collisions, but are modified for more central Pb-Pb collisions. In these central Pb-Pb events, a larger fraction of the jet momentum is observed at larger distances from the jet axis compared to pp, reflecting the interaction between the partonic medium created in heavy ion collisions and the traversing partons.
Description:	The CMS Collaboration: et al.
Publisher version (URL):	https://doi.org/10.1103/PhysRevLett.122.152001
URI:	http://hdl.handle.net/10261/213204
DOI:	http://dx.doi.org/10.1103/PhysRevLett.122.152001
Identifiers:	doi: 10.1103/PhysRevLett.122.152001 e-issn: 1079-7114 issn: 0031-9007
Appears in Collections:	(IFCA) Artículos