First measurement of time-dependent CP violation in B[superscript 0][subscript s]→K[superscript +]K[superscript −] decays
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art_10.1007_JHEP10(2013)183.pdf
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Author(s)
Williams, Michael
Alternative Title
First measurement of time-dependent CP violation in B0s→K+K decays
Date Issued
October 2013
Journal
Journal of High Energy Physics
Publisher
Springer-Verlag/SISSA
Citation
The LHCb collaboration et al. “First Measurement of Time-Dependent CP Violation in B[superscript 0][subscript s] to K[superscript +]K[superscript -] Decays.” Journal of High Energy Physics 2013.10 (2013): n. pag. © 2013 CERN for the benefit of the LHCb collaboration
Version
Final published version
Abstract
Direct and mixing-induced CP-violating asymmetries in B[superscript 0][subscript s] → K[superscript +]K[superscript −] decays are measured for the first time using a data sample of pp collisions, corresponding to an
integrated luminosity of 1.0 fb[superscript −1], collected with the LHCb detector at a centre-of-mass energy of 7 TeV. The results are C[subscript KK] = 0.14 ± 0.11 ± 0.03 and S[subscript KK] = 0.30 ± 0.12 ± 0.04,
where the first uncertainties are statistical and the second systematic. The corresponding quantities are also determined for B[superscript 0] → π[superscript +]π[superscript −] decays to be C[subscript ππ] = −0.38±0.15±0.02 and S[subscript ππ] = −0.71 ± 0.13 ± 0.02, in good agreement with existing measurements.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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Creative Commons Attribution 4.0 International License
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DOI of Published Version
https://doi.org/10.1007/jhep10(2013)183
