Nikhef National Institute for Subatomic Physics, Amsterdam, The Netherlands.
Phys Rev Lett. 2012 May 18;108(20):201601. doi: 10.1103/PhysRevLett.108.201601. Epub 2012 May 16.
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.
利用 LHCb 在 2011 年收集的对应于总积分亮度为 0.35 fb-1 的数据样本,我们报道了 Bs0 介子衰变为 K±π∓对的 CP 破坏的首个证据,ACP(Bs0→Kπ)=0.27±0.08(stat)±0.02(syst),其显著性为 3.3σ。此外,我们报道了 B0 介子衰变为 K±π∓对的 CP 破坏的最精确测量结果,ACP(B0→Kπ)=-0.088±0.011(stat)±0.008(syst),其显著性超过 6σ。