Loading...
Transverse momentum spectra of inclusive b jets in pPb collisions at √sNN = 5.02TeV
CMS Collaboration
CMS Collaboration
Citations
Altmetric:
Abstract
We present a measurement of b jet transverse momentum (pT)spectra in proton-lead (pPb) collisions using a dataset corresponding to about 35nb−1collected with the CMS detector at the LHC. Jets from b quark fragmentation are found by exploiting the long lifetime of hadrons containing a b quark through tagging methods using distributions of the secondary vertex mass and displacement. Extracted cross sections for b jets are scaled by the effective number of nucleon–nucleon collisions and are compared to a reference obtained frompythiasimulations of pp collisions. Thepythia-based estimate of the nuclear modification factor is found to be 1.22 ±0.15 (stat+systpPb) ±0.27 (systpythia)averaged over all jets with pTbetween 55 and 400GeV/cand with |ηlab|<2. We also compare this result to predictions from models using perturbative calculations in quantum chromodynamics.
Description
Date
2016-01-14
Journal Title
Journal ISSN
Volume Title
Publisher
Elsevier
Collections
Research Projects
Organizational Units
Journal Issue
Keywords
CMS, Physics, Heavy ions, b-tagging
Citation
CMS collaboration. (2016). Transverse momentum spectra of inclusive b jets in pPb collisions at. Physics letters B, 754, 59-80.