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

Sirunyan, A. M. and Tumasyan, A. R. and Adam, Wolfgang and Asilar, Ece and Bergauer, Thomas and Md. Ali, Mohd. Adli (2017) Measurements of the charm jet cross section and nuclear modification factor in pPb collisions at sNN=5.02 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 772. pp. 306-329. ISSN 0370-2693

	PDF (The CMS Collaboration) - Published Version Restricted to Repository staff only Download (1MB) | Request a copy
	PDF (scopus) - Supplemental Material Restricted to Repository staff only Download (564kB) | Request a copy

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 = 5.02 TeV, 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 = 5.02 TeV 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.

Item Type:	Article (Journal)
Additional Information:	7861/63041
Uncontrolled Keywords:	CMS; Heavy ions; Charm-tagging; Heavy-flavor
Subjects:	Q Science > Q Science (General) Q Science > QC Physics
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Science
Depositing User:	Engku Norulizati Engku Aziz
Date Deposited:	07 May 2018 11:23
Last Modified:	21 Jun 2018 10:55
URI:	http://irep.iium.edu.my/id/eprint/63041

Actions (login required)

View Item