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Transverse momentum spectra of inclusive b jets in pPb collisions at √sNN=5.02 TeV
Journal article   Open access   Peer reviewed

Transverse momentum spectra of inclusive b jets in pPb collisions at √sNN=5.02 TeV

V Khachatryan, Bora Işıldak and CMS Collaboration
Physics letters. B, Vol.754, pp.59-80
03/10/2016
DOI: 10.1016/j.physletb.2016.01.010
url
https://doi.org/10.1016/j.physletb.2016.01.010View
Published (Version of record) Open Access

Abstract

We present a measurement of b jet transverse momentum (pT) spectra in proton-lead (pPb) collisions using a dataset corresponding to about 35 nb−1 collected 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 from pythia simulations of pp collisions. The pythia-based estimate of the nuclear modification factor is found to be View the MathML source averaged over all jets with pT between 55 and 400 GeV/c and with |ηlab|<2. We also compare this result to predictions from models using perturbative calculations in quantum chromodynamics.
Physics Heavy ions tagging

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