Document Type
Article
Publication Title
Physics Letters B
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 1.22±0.15(stat+syst pPb)±0.27(syst pythia) 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.
DOI
10.1016/j.physletb.2016.01.010
Publication Date
2016
Recommended Citation
Baarmand, M M.; Bhopatkar, Vallary; Hohlmann, Marcus; Kalakhety, H; Noonan, D; Roy, Tuhin S.; Yumiceva, Francisco X.; and CMS Collaboration, "Transverse Momentum Spectra Of Inclusive b Jets In pPb Collisions At √sNN=5.02 TeV" (2016). Aerospace, Physics, and Space Science Faculty Publications. 7.
https://repository.fit.edu/apss_faculty/7