论文标题
在$ \ sqrt {s} = $ 13 TEV上搜索违反衰减的Lepton风味$τ$ $ \ $ 3 $ 3 $ 3 $μ$
Search for the lepton flavor violating decay $τ$ $\to$ 3$μ$ in proton-proton collisions at $\sqrt{s} =$ 13 TeV
论文作者
论文摘要
从搜索Lepton风味违反衰减$τ$ \ $ \至$ 3 $μ$ $ \ sqrt {s} = $ 13 tev的proton-proton碰撞中，报告了结果。数据样本对应于2016年CMS实验记录的33.2 fb $^{ - 1} $的集成发光度。搜索利用$τ$ leptons在W Boson和重型Hadron decron中产生的$τ$ leptons。没有观察到高于预期背景的显着多余。获得分支分数$ \ MATHCAL {B}（τ$ $ \ to $ 3 $μ）的上限为8.0 $ \ times $ \ times $ 10 $^{ - 8} $在90％置信度下，预期上限为6.9 $ \ times $ \ times $ \ times $ 10 $^{ - 8} $。
Results are reported from a search for the lepton flavor violating decay $τ$ $\to$ 3$μ$ in proton-proton collisions at $\sqrt{s} =$ 13 TeV. The data sample corresponds to an integrated luminosity of 33.2 fb$^{-1}$ recorded by the CMS experiment at the LHC in 2016. The search exploits $τ$ leptons produced in both W boson and heavy-flavor hadron decays. No significant excess above the expected background is observed. An upper limit on the branching fraction $\mathcal{B}(τ$ $\to$ 3$μ)$ of 8.0 $\times$ 10$^{-8}$ at 90% confidence level is obtained, with an expected upper limit of 6.9 $\times$ 10$^{-8}$.
