Modifications of the properties of jets in PbPb collisions, relative to those in pp collisions, are studied at a nucleon-nucleon center-of-mass energy of √sNN = 5.02 TeV via correlations of charged particles with the jet axis in relative pseudorapidity (∆η), relative azimuth (∆φ), and relative angular distance from the jet axis ∆r = sqrt((∆η)2 + (∆φ)2). This analysis uses data collected with the CMS detector at the LHC, corresponding to integrated luminosities of 404 µb−1 and 27.4 pb−1 for PbPb and pp collisions, respectively. Charged particle number densities, jet fragmentation functions, and jet shapes are presented as a function of PbPb collision centrality and charged-particle track transverse momentum, providing a differential description of jet modifications due to interactions with the quarkgluon plasma.

Jet properties in PbPb and pp collisions at √sNN=5.02 TeV

Ravera, F.;Meridiani, P.;Amapane, N.;Argiro, S.;Bellan, R.;Costa, M.;Covarelli, R.;Kiani, B.;Migliore, E.;Monaco, V.;Monteil, E.;Obertino, M. M.;Pacher, L.;Pinna Angioni, G. L.;Romero, A.;Sacchi, R.;Sola, V.;Solano, A.;Rumerio, P.;
2018-01-01

Abstract

Modifications of the properties of jets in PbPb collisions, relative to those in pp collisions, are studied at a nucleon-nucleon center-of-mass energy of √sNN = 5.02 TeV via correlations of charged particles with the jet axis in relative pseudorapidity (∆η), relative azimuth (∆φ), and relative angular distance from the jet axis ∆r = sqrt((∆η)2 + (∆φ)2). This analysis uses data collected with the CMS detector at the LHC, corresponding to integrated luminosities of 404 µb−1 and 27.4 pb−1 for PbPb and pp collisions, respectively. Charged particle number densities, jet fragmentation functions, and jet shapes are presented as a function of PbPb collision centrality and charged-particle track transverse momentum, providing a differential description of jet modifications due to interactions with the quarkgluon plasma.
2018
2018
5
1
37
http://link.springer.com/journal/13130
Heavy Ion Experiments; Heavy-ion collision; Jet physics; Quark gluon plasma; Nuclear and High Energy Physics
Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Escalante Del...espandi
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1695405
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