Measurement of {\textit CP} observables in semileptonic decays at LHCb

LHCb has recorded large samples of semileptonic {\textit B} decays. These provide the possibility to study {\textit CP} violation effects in the $B^{0}_s$ and $B^{0}$ systems. Decay-time-integrated or decay-time-dependent asymmetries between charge conjugated final states probe {\textit CP} violation in $B^{0}_{(s)}$ mixing through the measurement of the parameter $a_{\textrm sl}. These measurements rely on data-driven techniques to control possible detection asymmetries.

LHCb已经记录了大量的半轻子\(B\)衰变样本。这些为研究\(B^{0}_{s}\)和\(B^{0}\)系统中的\(CP\)破坏效应提供了可能性。电荷共轭末态之间的衰变时间积分或衰变时间相关的不对称性通过对参数\(a_{\text{sl}}\)的测量来探测\(B^{0}_{(s)}\)混合中的\(CP\)破坏。这些测量依靠数据驱动的技术来控制可能的探测不对称性。