KIT | KIT-Bibliothek | Impressum | Datenschutz

Study of jet quenching with isolated-photon+jet correlations in PbPb and pp collisions at √sNN = 5.02 TeV

CMS Collaboration; Sirunyan, A.M.; Tumasyan, A.; Adam, W.; Ambrogi, F.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V.M.; Grossmann, J.; Hrubec, J.; Jeitler, M.; König, A.; Krammer, N.; Krätschmer, I.; ... mehr

Measurements of azimuthal angle and transverse momentum ( ) correlations of isolated photons and associated jets are reported for and PbPb collisions at . The data were recorded with the CMS detector at the CERN LHC. For events containing a leading isolated photon with and an associated jet with , the photon+jet azimuthal correlation and imbalance in PbPb collisions are studied as functions of collision centrality and . The results are compared to reference data collected at the same collision energy and to predictions from several theoretical models for parton energy loss. No evidence of broadening of the photon+jet azimuthal correlations is observed, while the ratio decreases significantly for PbPb data relative to the reference. All models considered agree within uncertainties with the data. The number of associated jets per photon with is observed to be shifted towards lower values in central PbPb collisions compared to collisions.

Open Access Logo

Verlagsausgabe §
DOI: 10.5445/IR/1000086208
Veröffentlicht am 05.10.2018
DOI: 10.1016/j.physletb.2018.07.061
Zitationen: 11
Web of Science
Zitationen: 10
Zugehörige Institution(en) am KIT Institut für Experimentelle Kernphysik (IEKP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2018
Sprache Englisch
Identifikator ISSN: 0370-2693
KITopen-ID: 1000086208
Erschienen in Physics letters / B
Band 785
Seiten 14–39
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Schlagworte CMS; Heavy ion; Physics; Photon; Jet; Jet quenching
Nachgewiesen in Web of Science
KIT – Die Forschungsuniversität in der Helmholtz-Gemeinschaft
KITopen Landing Page