First evidence of direct CP violation in charmless two-body decays of Bs0 mesons.
First evidence of direct CP violation in charmless two-body decays of Bs0 mesons.
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DOI:
10.1103/physrevlett.108.201601
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发表时间:
2012-02
影响因子:
8.6
通讯作者:
R. Aaij;C. Beteta;B. Adeva;M. Adinolfi;C. Adrover;A. Affolder;Z. Ajaltouni;J. Albrecht;
中科院分区:
文献类型:
--
作者:
R. Aaij;C. Beteta;B. Adeva;M. Adinolfi;C. Adrover;A. Affolder;Z. Ajaltouni;J. Albrecht;
Using a data sample corresponding to an integrated luminosity of 0.35 fb-1 collected by LHCb in 2011, we report the first evidence of CP violation in the decays of Bs0} mesons to K±π∓ pairs, ACP(Bs0→Kπ)=0.27±0.08(stat)±0.02(syst), with a significance of 3.3σ. Furthermore, we report the most precise measurement of CP violation in the decays of B0 mesons to K±π∓ pairs, ACP(B0→Kπ)=-0.088±0.011(stat)±0.008(syst), with a significance exceeding 6σ.