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;
R. Aaij;C. Beteta;B. Adeva;M. Adinolfi;C. Adrover;A. Affolder;Z. Ajaltouni;J. Albrecht;
中科院分区:
物理与天体物理1区
文献类型:
--
作者:
R. Aaij;C. Beteta;B. Adeva;M. Adinolfi;C. Adrover;A. Affolder;Z. Ajaltouni;J. Albrecht;

文献摘要

相似文献

利用LHCb 2011年收集的积分光度为0.35 fb-1的数据样本,首次报道了Bs 0}介子衰变到K±π π介子对的CP破坏的证据,ACP(Bs 0 →Kπ)=0.27±0.08(stat)±0.02(syst),显著性为3.3σ.此外,我们还报道了B_0介子衰变到K±π π介子对中CP破坏的最精确测量值ACP(B_0 →Kπ)=-0.088 0. 011(stat)±0.008(syst),其显著性超过6σ.
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.