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https://hdl.handle.net/11147/6198
Title: | Transverse momentum spectra of inclusive b jets in pPb collisions at √sNN=5.02 TeV | Authors: | Khachatryan, V. Sirunyan, A.M. Tumasyan, A. Adam, W. Asilar, E. Bergauer, T. Redondo, I. |
Keywords: | b-tagging CMS Heavy ions Physics |
Publisher: | Elsevier B.V. | Source: | Khachatryan, V., Sirunyan, A.M., Tumasyan, A., Adam, W., Asilar, E., Bergauer, T.,...CMS Collaboration (2016). Transverse momentum spectra of inclusive b jets in pPb collisions at √sNN=5.02 TeV. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 754, 59-80. doi:10.1016/j.physletb.2016.01.010 | 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. © 2016 CERN for the benefit of the CMS Collaboration | URI: | https://doi.org/10.1016/j.physletb.2016.01.010 | ISSN: | 0370-2693 |
Appears in Collections: | Mathematics / Matematik Rectorate / Rektörlük Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection |
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