Measurement of CP Violation in B[superscript 0] → J / ψ K[superscript 0][subscript S] Decays
Name
PhysRevLett.115.031601.pdf
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320.15 KB
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Checksum (MD5)
1016a157c2b0f90a2a30d7ca1276ae37
Author(s)
Counts, Ian Thomas Hunt
Ilten, Philip J
Williams, Michael
Date Issued
July 2015
Journal
Physical Review Letters
Publisher
American Physical Society (APS)
Citation
Aaij, R., et al. “Measurement of C P Violation in B[superscript 0'] → J / ψ K[superscript 0][subscript S] Decays.” Physical Review Letters, vol. 115, no. 3, July 2015. © 2015 CERN, for the LHCb Collaboration
Version
Final published version
Abstract
Measurements are presented of the CP violation observables S and C in the decays of B[superscript 0] and [bar over B][superscript 0] mesons to the J/ψK[superscript 0][subscript S] final state. The data sample corresponds to an integrated luminosity of 3.0fb[superscript -1] collected with the LHCb experiment in proton-proton collisions at center-of-mass energies of 7 and 8 TeV, and contains a total of 41560 selected B[superscript 0] and [bar over B][superscript 0] decays. The analysis of the time evolution of these decays yields S = 0.731 ± 0.035(stat) ± 0.020(syst) and C = -0.038 ± 0.032(stat)± 0.005(syst). In the standard model, S equals sin(2β) to a good level of precision. The values are consistent with the current world averages and with the standard model expectations.
MIT Department
Massachusetts Institute of Technology. Department of Physics
Terms of Use
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DOI of Published Version
https://doi.org/10.1103/PHYSREVLETT.115.031601
