Measurement of CP Violation in B-0 -> J/psi K-S(0) Decays
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Measurements are presented of the CP violation observables S and C in the decays of B0 and B¯0 mesons to the J/ψK0S final state. The data sample corresponds to an integrated luminosity of 3.0 fb−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 41 560 selected B0 and B¯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.
Date Issued
2015-07-14
Date Acceptance
2015-07-14
Citation
Physical Review Letters, 2015, 115 (3)
ISSN
1079-7114
Publisher
American Physical Society
Journal / Book Title
Physical Review Letters
Volume
115
Issue
3
Copyright Statement
© 2015 CERN, for the LHCb Collaboration. This article is available under the terms of the Creative Commons Attribution 3.0 License.
License URL
Sponsor
Science and Technology Facilities Council (STFC)
Grant Number
ST/K001604/1
Subjects
Science & Technology
Physical Sciences
Physics, Multidisciplinary
Physics
B-MESON DECAYS
DISTRIBUTIONS
hep-ex
General Physics
02 Physical Sciences
Publication Status
Published
Article Number
031601