Transverse momentum spectra of inclusive b jets in pPb collisions at √sNN=5.02 TeV
Type :
Article
Publication Status :
published
Access :
restrictedAccess
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.
Source :
Physics Letters B
Date :
2016-03-10
Volume :
754
Publisher :
Elsevier
URI
http://hdl.handle.net/10679/4094http://www.sciencedirect.com/science/article/pii/S0370269316000149
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