μ和tau轻子的五体轻子衰变

我们研究了五体衰变μ−→e − e + e −νμνe e $$ {\ mu} ^ {-} \ to {e} ^ {-} {e} ^ {+} {e} ^ {-} {\ nu} _ {\ mu} {\ overline {\ nu}} _ e $$和τ-→ℓ-ℓ'+ℓ'-ντν¯ℓ$$ {\ tau} ^ {- } \ to \ {\ ell} ^ {-} {\ ell} ^ {\ prime +} {\ ell} ^ {\ prime-} {\ nu} _ {\ tau} {\ overline {\ nu}} __ {\ ell} $$在标准模型（SM）中以及在一般有效场论中对ℓ，ℓ'