${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$   Decay Mode Summary INSPIRE   PDGID:
S035.48
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{219}$ ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$ $<3.9 \times 10^{-8}$ CL= 90% 866
Category: Lepton Family number ($\mathit LF$), Lepton number ($\mathit L$), or Baryon number ($\mathit B$) violating modes (In the modes below, ${{\mathit \ell}}$ means a sum over ${{\mathit e}}$ and ${{\mathit \mu}}$ modes)
Note: (L) Violation of total lepton number conservation also implies violation of lepton family number conservation.
The following data is related to the above value:
$\Gamma($ ${{\mathit \tau}^{-}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \pi}^{-}}{{\mathit \pi}^{-}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{219}/\Gamma$