标题： \cl 中的\bf $τ\rightarrowμμ{\barμ}$ 和$τ\rightarrowμe{\bar e}$衰变，具有$\e6$对称性的弦模型 显示英文标题

标题： \cl{\bf $τ\rightarrowμμ{\barμ}$ and $τ\rightarrowμe{\bar e}$ Decays in String Models with $\e6$ Symmetry

摘要： 详细分析了弦模型中具有 $\e6$ 对称性的稀有 $\tau$ 衰变 {\it 经由} $\taumue$ 和 $\taumus$。结果发现，$\Gamma(\taumue)\sim(6-7)\Gamma(\taumus)$ 和这些衰变率一般比 $\Gamma(\mu\rightarrow e\gamma)$ 的小约 1000 倍。 还发现来自过程$\taumue$的出射μ子几乎 100% 右手极化，而出射电子则会主要互相平行。 这些衰变过程可能在SSC上被观测到。 显示英文摘要

摘要： A detailed analysis on the rare $\tau$ decay {\it via} $\taumue$ and $\taumus$ in the string models with $\e6$ symmetry is reported. It is found that $\Gamma(\taumue)\sim(6-7)\Gamma(\taumus)$ and these rates are in general about 1000 times less than that of $\Gamma(\mu\rightarrow e\gamma)$. It is also found that the out-going muon in $\taumue$ is almost 100\% right-handed polarized and the out-going electrons would be predominately parallel to each other. These decay processes may be accessible at the SSC.