论文标题
搜索Lepton-Flavour违反衰减$ B^0 \ to K^{*0}τ^\ pmμ^\ mp $
Search for the lepton-flavour violating decays $B^0 \to K^{*0} τ^\pm μ^\mp$
论文作者
论文摘要
提出了首次搜索Lepton-Flavour违反衰减的损失$ b^0 \ to K^{*0}τ^\ pmμ^\ mp $。分析是使用质子 - 蛋白质碰撞数据的样本进行的，该样品在2011年至2018年间使用7、8和13 TEV的LHCB检测器收集，对应于9 fb $^{ - 1} $的集成光度。未观察到明显的信号，并且分支级分的上限确定为$ {\ cal {b}}（b^0 \ to k^{*0}τ^+μ^ - ）<1.0 $ $（1.2）\ times 10^{ - 5} μ^+）<8.2 $ $（9.8）\ times 10^{ - 6} $在90％（95％）的置信度下。
A first search for the lepton-flavour violating decays $B^0 \to K^{*0} τ^\pm μ^\mp$ is presented. The analysis is performed using a sample of proton-proton collision data, collected with the LHCb detector at centre-of-mass energies of 7, 8 and 13 TeV between 2011 and 2018, corresponding to an integrated luminosity of 9 fb$^{-1}$. No significant signal is observed, and upper limits on the branching fractions are determined to be ${\cal{B}}(B^0 \to K^{*0} τ^+ μ^-)< 1.0$ $(1.2)\times 10^{-5} $ and ${\cal{B}}(B^0 \to K^{*0} τ^- μ^+)< 8.2$ $(9.8) \times 10^{-6}$ at the 90% (95%) confidence level.
