Measurement of C P Violation in B 0 ? ? ( ? l + l - ) K S 0 ( ? p + p - ) Decays
Measurement of C P Violation in B 0 ? ? ( ? l + l - ) K S 0 ( ? p + p - ) Decays
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B 0 中 C P 违规的测量？
DOI：
10.1103/physrevlett.132.021801
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发表时间：
2024
影响因子：
8.6
通讯作者：
Aaij R
中科院分区：
文献类型：
--
作者：
Aaij R
本文给出了介子衰变到末态的含时破坏的测量方法。这些数据对应于LHCb探测器在质心能量处收集的积分光度。测得的破坏参数为S KS_0 =0.717±0.013（stat）±0.008（syst）和C KS_0 =0.008±0.012（stat）±0.003（syst）。这一测量代表了迄今为止最精确的CKM角度单次测量，比当前世界平均水平更精确。此外，报告各个通道的违规参数的测量结果，并与LHCb运行1测量结果进行组合。
A measurement of time-dependentviolation in the decays ofandmesons to the final states,andwithis presented. The data correspond to an integrated luminosity ofcollected at a center-of-mass energy ofwith the LHCb detector. The-violation parameters are measured to be SψKS0=0.717±0.013(stat)±0.008(syst) and CψKS0=0.008±0.012(stat)±0.003(syst). This measurement ofrepresents the most precise single measurement of the CKM angleto date and is more precise than the current world average. In addition, measurements of the-violation parameters of the individual channels are reported and a combination with the LHCb Run 1 measurements is performed.