%0 Journal Article
%T First Observation of CP Violation in the Decays of B-s(0) Mesons
%A LHCb Collaboration (Aaij, R. et al
%A Oyanguren, A.
%A Ruiz Valls, P.
%J Physical Review Letters
%D 2013
%V 110
%N 22
%I Amer Physical Soc
%@ 0031-9007
%G English
%F LHCbCollaborationAaij_etal2013
%O WOS:000319738400003
%O exported from refbase (https://references.ific.uv.es/refbase/show.php?record=1465), last updated on Thu, 11 Jul 2013 11:23:49 +0000
%X 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.
%R 10.1103/PhysRevLett.110.221601
%U http://arxiv.org/abs/arXiv:1304.6173
%U https://doi.org/10.1103/PhysRevLett.110.221601
%P 221601-9pp