Measurement of B^{+}, B^{0} and Λ_{b}^{0} production in pPb collisions at sqrt[s_{NN}]=8.16 TeV
Name
PhysRevD.99.052011.pdf
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1.24 MB
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Author(s)
Boettcher, Thomas Julian
Craik, Daniel C
Weisser, Constantin
Williams, Michael
Date Issued
March 2019
Journal
Physical Review D
Publisher
American Physical Society
Citation
Aaij, R. et al (LHCb Collaboration). "Measurement of B^{+}, B^{0} and Λ_{b}^{0} production in pPb collisions at sqrt[s_{NN}]=8.16 TeV." Physical Review D, 99, 56 (March 2020): 05211. © 2019 CERN, for the LHCb Collaboration
Version
Final published version
Abstract
The production of B^{+}, B^{0} and Λ_{b}^{0} hadrons is studied in proton-lead collisions at a center-of-mass energy per nucleon pair of sqrt[s_{NN}]=8.16 TeV recorded with the LHCb detector at the LHC. The measurement uses a dataset corresponding to an integrated luminosity of 12.2±0.3 nb^{-1} for the case where the proton beam is projected into the LHCb detector (corresponding to measuring hadron production at positive rapidity) and 18.6±0.5 nb^{-1} for the lead beam projected into the LHCb detector (corresponding to measuring hadron production at negative rapidity). Double-differential cross sections are measured and used to determine forward-backward ratios and nuclear modification factors, which directly probe nuclear effects in the production of beauty hadrons. The double-differential cross sections are measured as a function of the beauty-hadron transverse momentum and rapidity in the nucleon-nucleon center-of-mass frame. Forward-to-backward cross section ratios and nuclear modification factors indicate a significant nuclear suppression at positive rapidity. The ratio of Λ_{b}^{0} over B^{0} production cross sections is reported and is consistent with the corresponding measurement in pp collisions. Keywords: Fragmentation into hadrons; Hard scattering; Jets and heavy flavor physics; Particle and resonance production; Particle interactions; Photon, lepton and quark production; Quark-gluon plasma; Relativistic heavy-ion collisions
MIT Department
Massachusetts Institute of Technology. Department of Physics
Massachusetts Institute of Technology. Laboratory for Nuclear Science
Terms of Use
Creative Commons Attribution 3.0 unported license
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DOI of Published Version
https://doi.org/10.1103/PhysRevD.99.052011
