Measurement of the CP-violating phase phi(s) in (B)over-bar(s)(0) -> J/psi pi(+)pi(-) decays
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
Measurement of the mixing-induced CP-violating phase φs in B0
s decays is of prime importance in
probing new physics. Here 7421 ± 105 signal events from the dominantly CP-odd final state J/ψπ+π−
are selected in 1 fb−1 of pp collision data collected at √s = 7 TeV with the LHCb detector. A timedependent
fit to the data yields a value of φs = −0.019+0.173+0.004
−0.174−0.003 rad, consistent with the Standard
Model expectation. No evidence of direct CP violation is found.
s decays is of prime importance in
probing new physics. Here 7421 ± 105 signal events from the dominantly CP-odd final state J/ψπ+π−
are selected in 1 fb−1 of pp collision data collected at √s = 7 TeV with the LHCb detector. A timedependent
fit to the data yields a value of φs = −0.019+0.173+0.004
−0.174−0.003 rad, consistent with the Standard
Model expectation. No evidence of direct CP violation is found.
Date Issued
2012-07-18
Date Acceptance
2012-06-12
Citation
Physics Letters B, 2012, 713 (4-5), pp.378-386
ISSN
0370-2693
Publisher
Elsevier: SCOAP3
Start Page
378
End Page
386
Journal / Book Title
Physics Letters B
Volume
713
Issue
4-5
Copyright Statement
© 2012 Elsevier B.V. Open access under CC BY-NC-ND license.
Subjects
Science & Technology
Physical Sciences
Astronomy & Astrophysics
Physics, Nuclear
Physics, Particles & Fields
Physics
PHYSICS, MULTIDISCIPLINARY
Publication Status
Published