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Measurements of the charm jet cross section and nuclear modification factor in pPb collisions at √SNN = 5.02TeV

CMS Collaboration; Sirunyan, A. M.; Tumasyan, A.; Adam, W.; Asilar, E.; Bergauer, T.; Brandstetter, J.; Brondolin, E.; Dragicevic, M.; Erö, J.; Flechl, M.; Friedl, M.; Frühwirth, R.; Ghete, V. M.; Hartl, C.; Hörmann, N.; Hrubec, J.; Jeitler, M.; König, A.; ... mehr

Abstract:

The CMS Collaboration presents the first measurement of the differential cross section of jets from charm quarks produced in proton–lead (pPb) collisions at a nucleon–nucleon center-of-mass energy of √sNN=5.02TeV, as well as results from charm quark jets in proton–proton (pp) collisions at √s=2.76
and 5.02 TeV. By comparing the yields of the pPb and pp collision systems at the same energy, a nuclear modification factor for charm jets from 55 to 400 GeV/c in pPb collisions at √sNN=5.02TeV of RpA=0.92±0.07(stat)±0.11(syst) is obtained. This is consistent with an absence of final-state energy loss for charm quarks in pPb collisions. In addition, the fraction of jets coming from charm quarks is found to be consistent with that predicted by pythia 6 for pp collisions at √s=2.76 and 5.02 TeV, and is independent of the jet transverse momentum from 55 to 400 GeV/c.
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Verlagsausgabe §
DOI: 10.5445/IR/1000077061
Veröffentlicht am 01.12.2017
Originalveröffentlichung
DOI: 10.1016/j.physletb.2017.06.053
Scopus
Zitationen: 26
Dimensions
Zitationen: 19
Cover der Publikation
Zugehörige Institution(en) am KIT Fakultät für Physik – Institut für Experimentelle Kernphysik (IEKP)
Institut für Prozessdatenverarbeitung und Elektronik (IPE)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2017
Sprache Englisch
Identifikator ISSN: 0370-2693, 1873-2445
urn:nbn:de:swb:90-770611
KITopen-ID: 1000077061
Erschienen in Physics letters / B
Verlag North-Holland Publishing
Band 772
Seiten 306–329
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Schlagwörter CMS; Heavy ions; Charm-tagging; Heavy-flavor
Nachgewiesen in Web of Science
Dimensions
Scopus
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