论文标题
搜索$ k^+\toμ^-νe^+e^+$衰减
A search for the $K^+\toμ^-νe^+e^+$ decay
论文作者
论文摘要
搜索$ k^+\toμ^-νe^+e^+$衰减，在标准模型中禁止通过Lepton Number或Lepton风味保护根据发射中微子的风味进行，这是使用NA62在2016年CERN在CERN上收集的数据集进行的。对于90％Cl的衰减分支分数，获得了$ 8.1 \ times 10^{ - 11} $的上限，比以前的搜索提高了250倍。
A search for the $K^+\toμ^-νe^+e^+$ decay, forbidden within the Standard Model by either lepton number or lepton flavour conservation depending on the flavour of the emitted neutrino, has been performed using the dataset collected by the NA62 experiment at CERN in 2016--2018. An upper limit of $8.1\times 10^{-11}$ is obtained for the decay branching fraction at 90% CL, improving by a factor of 250 over the previous search.
