Measurement of Bs0 meson production in pp and PbPb collisions at √sNN = 5.02 TeV
Name
1-s2.0-S0370269319304708-main.pdf
Description
Published version
Size
1.85 MB
Format
Adobe PDF
Checksum (MD5)
4289758850d632c1641217cb0e3366b4
Author(s)
CMS collaboration
Abercrombie, Daniel Robert
Allen, B.
Azzolini, Virginia
Barbieri, Richard Alexander
Baty, Austin Alan
Bauer, Gerry P
Bi, Ran
Brandt, Stephanie Akemi
Busza, Wit
Alternative Title
Measurement of B[superscript 0 over subscript s] meson production in pp and PbPb collisions at √[superscript s]NN = 5.02 TeV
Date Issued
September 2019
Journal
Physics Letters B
Publisher
Elsevier BV
Citation
CMS Collaboration (Sirunyan, A.M. et al.) "Measurement of Bs0 meson production in pp and PbPb collisions at √sNN = 5.02 TeV." Physics Letters B 796 (September 2019): 168-190. ©2019 Author(s)
Version
Final published version
Abstract
The production cross sections of B[superscript 0 over subscript s] mesons and charge conjugates are measured in proton-proton (pp) and PbPb collisions via the exclusive decay channel B[superscript 0 over subscript s]→J/ψϕ→μ[superscript +]μ[superscript -]K[superscript K]K[superscript -] at a center-of-mass energy of 5.02 TeV per nucleon pair and within the rapidity range |y|<2.4 using the CMS detector at the LHC. The pp measurement is performed as a function of transverse momentum (pT) of the B[superscript 0 over subscript s] mesons in the range of 7 to 50 GeV/c and is compared to the predictions of perturbative QCD calculations. The B[superscript 0 over subscript s] production yield in PbPb collisions is measured in two pT intervals, 7 to 15 and 15 to 50 GeV/c, and compared to the yield in pp collisions in the same kinematic region. The nuclear modification factor (RAA) is found to be 1.5±0.6(stat)±0.5(syst) for 7–15 GeV/c, and 0.87±0.30(stat)±0.17(syst) for 15–50 GeV/c, respectively. Within current uncertainties, the Bs0 results are consistent with models of strangeness enhancement, and suppression by parton energy loss, as observed for the B+ mesons.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
Creative Commons Attribution 4.0 International license
Persistent DSpace Link
DOI of Published Version
https://doi.org/10.1016/J.PHYSLETB.2019.07.014
