TY  - JOUR
AU  - LHCb Collaboration (Aaij, R. et al
AU  - Oyanguren, A.
AU  - Ruiz Valls, P.
PY  - 2013
DA  - 2013//
TI  - First Observation of CP Violation in the Decays of B-s(0) Mesons
T2  - Phys. Rev. Lett.
JO  - Physical Review Letters
SP  - 221601
EP  - 9pp
VL  - 110
IS  - 22
PB  - Amer Physical Soc
AB  - Using pp collision data corresponding to an integrated luminosity of 1.0 fb(-1) and collected by LHCb in 2011 at a center-of-mass energy of 7 TeV, we report the measurement of direct CP violation in B-s(0) -> K-pi(+) decays, A(CP) (B-s(0) -> K-pi(+)) = 0.27 +/- 0.04(stat) +/- 0.01(syst), with significance exceeding 5 standard deviations. This is the first observation of CP violation in the decays of B-s(0) mesons. Furthermore, we provide an improved determination of direct CP violation in B-0 -> K+pi(-) decays, A(CP)(B-0 -> K+pi(-) ) = -0.080 +/- 0.007(stat) +/- 0.003(syst), which is the most precise measurement of this quantity to date.
SN  - 0031-9007
UR  - http://arxiv.org/abs/arXiv:1304.6173
UR  - https://doi.org/10.1103/PhysRevLett.110.221601
DO  - 10.1103/PhysRevLett.110.221601
LA  - English
N1  - WOS:000319738400003
ID  - LHCbCollaborationAaij_etal2013
ER  -