标题： LHCb上LFV和LNV衰变的搜索 显示英文标题

标题： Searches for LFV and LNV Decays at LHCb

摘要： 本文介绍了在LHCb上对轻子数破坏（LNV）B介子衰变、轻子味破坏（LFV）衰变$\Ptau^- \to \Pmu^-\Pmu^-\Pmu^+$以及轻子数和重子数破坏（LNV和BNV）衰变$\Ptau^- \to \mu^+ \mu^- \APproton$和$\Ptau^- \to \mu^- \mu^- \Pproton$的最新研究进展。这些搜索是在强子对撞机上首次进行的。在没有信号的情况下，我们给出了上限，分别为：$\mathcal{B}(\tau^- \to \mu^- \mu^- \mu^+) < 6.3 \times 10^{-8}$、$\mathcal{B}(\Ptau^- \to \mu^- \mu^+ \APproton) < 3.4 \times 10^{-7}$、$\mathcal{B}(\Ptau^- \to \mu^- \mu^- \Pproton) < 4.4 \times 10^{-7}$在90%置信度下。 显示英文摘要

摘要： The paper presents the latest progress on the searches for Lepton Number Violating (LNV) B Meson decays, the Lepton Flavour Violating (LFV) decay $\Ptau^- \to \Pmu^-\Pmu^-\Pmu^+$, and the Lepton and Baryon Number Violating (LNV and BNV) decays $\Ptau^- \to \mu^+ \mu^- \APproton$ and $\Ptau^- \to \mu^- \mu^- \Pproton$ at the LHCb. These searches have been performed at a hadron collider for the first time. In the absence of signal we put upper limits, which are as follows: $\mathcal{B}(\tau^- \to \mu^- \mu^- \mu^+) < 6.3 \times 10^{-8}$, $\mathcal{B}(\Ptau^- \to \mu^- \mu^+ \APproton) < 3.4 \times 10^{-7}$, $\mathcal{B}(\Ptau^- \to \mu^- \mu^- \Pproton) < 4.4 \times 10^{-7}$ at 90% CL.