Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV
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1-s2.0-S0370269316000149-main.pdf
Description
Published version
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960.61 KB
Format
Adobe PDF
Checksum (MD5)
d0b2dc56af54967104b1d58f87586509
Author(s)
CMS Collaboration
Alternative Title
Transverse momentum spectra of inclusive b jets in pPb collisions at √[superscript s]NN = 5.02 TeV
Date Issued
March 2016
Journal
Physics letters B
Publisher
Elsevier BV
Citation
.CMS Collaboration (V. Khachatryan, et al.), "Transverse momentum spectra of inclusive b jets in pPb collisions at √ s NN = 5.02 TeV." Physics letters B 754 (March 2016): p. 59-80 doi 10.1016/J.PHYSLETB.2016.01.010 ©2016 Author(s)
Version
Final published version
Abstract
We present a measurement of b jet transverse momentum (p T ) 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 1.22±0.15(stat+syst pPb)±0.27(syst PYTHIA) averaged over all jets with p T between 55 and 400 GeV/c and with |η lab |<2. We also compare this result to predictions from models using perturbative calculations in quantum chromodynamics. ©2016
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
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DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2016.01.010
