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

CMS Collaboration

研究成果: Article査読

32 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)59-80
ページ数22
ジャーナルPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
754
DOI
出版ステータスPublished - 2016 3 10
外部発表はい

ASJC Scopus subject areas

  • 核物理学および高エネルギー物理学

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