${{\mathit Z}}$ $\rightarrow$ ${{\mathit \mu}^{\pm}}{{\mathit \tau}^{\mp}}$  Decay Mode Summary INSPIRE   PDGID:
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
$\Gamma_{67}$ ${{\mathit Z}}$ $\rightarrow$ ${{\mathit \mu}^{\pm}}{{\mathit \tau}^{\mp}}$ $<6.5 \times 10^{-6}$ CL= 95% 45577
Note: (LF) Lepton family number conservation means separate conservation of each of $\mathit L_{{{\mathit e}}}$, $\mathit L_{{{\mathit \mu}}}$, $\mathit L_{{{\mathit \tau}}}$.
Note: The value is for the sum of the charge states or particle/antiparticle states indicated.
The following data is related to the above value: