${{\mathit \Xi}^{-}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \mu}^{-}}{{\mathit \mu}^{-}}$   Decay Mode Summary INSPIRE   PDGID:
S022.14
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{14}$ ${{\mathit \Xi}^{-}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \mu}^{-}}{{\mathit \mu}^{-}}$ $<4 \times 10^{-8}$ CL= 90% 272
Category: $\Delta \mathit S$ = 2 forbidden ($\mathit S2$) 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:
$\Gamma($ ${{\mathit \Xi}^{-}}$ $\rightarrow$ ${{\mathit p}}{{\mathit \mu}^{-}}{{\mathit \mu}^{-}}$ $)/\Gamma($ ${{\mathit \Xi}^{-}}$ $\rightarrow$ ${{\mathit \Lambda}}{{\mathit \pi}^{-}}$ $)$
$\Gamma_{14}/\Gamma_{1}$