Measurements of the charm jet cross section and nuclear modification factor in pPb collisions at
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 $$\sqrt{s{NN}}$$ = 5.02 TeV, as well as results from charm quark jets in proton-proton (pp) collisions at $$\sqrt{s}$$= 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 in pPb collisions at $$\sqrt{s{NN}}$$ = 5.02 TeV of $$R_{pA}$$ = 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 $$\sqrt{s}$$= 2.76 and 5.02 TeV, and is independent of the jet transverse momentum from 55 to 400 GeV.
- Research Organization:
- Fermi National Accelerator Laboratory (FNAL), Batavia, IL (United States); Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States); Argonne National Laboratory (ANL), Argonne, IL (United States); Univ. of Illinois, Chicago, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Nuclear Energy (NE); National Science Foundation (NSF); Welch Foundation
- Contributing Organization:
- CMS Collaboration
- Grant/Contract Number:
- AC02-07CH11359; AC52-07NA27344; FG02-94ER40865; C-1845
- OSTI ID:
- 1366548
- Alternate ID(s):
- OSTI ID: 1339436; OSTI ID: 1474391; OSTI ID: 1666119; OSTI ID: 1666141
- Report Number(s):
- FERMILAB-PUB-16-633-CMS; CMS-HIN-15-012; CERN-EP-2016-274; arXiv:1612.08972; LLNL-JRNL-737505; S0370269317305294; PII: S0370269317305294
- Journal Information:
- Physics Letters. B, Journal Name: Physics Letters. B Vol. 772 Journal Issue: C; ISSN 0370-2693
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- Netherlands
- Language:
- English
Web of Science
Similar Records
production in collisions at TeV and in collisions at TeV
Measurement of prompt ψ(2S) production cross sections in proton–lead and proton–proton collisions at