${{\overline{\mathit b}}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ anything  Decay Mode Summary INSPIRE   PDGID:
S051.104
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{76}$ ${{\overline{\mathit b}}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ anything $<3.2 \times 10^{-4}$ CL= 90%
Category: $\Delta \mathit B$ = 1 weak neutral current ($\mathit B1$) modes
Note: (B1) Allowed by higher-order electroweak interactions.
The following data is related to the above value:
 ▸ expand all datablocks
$\lbrack{}\Gamma($ ${{\overline{\mathit b}}}$ $\rightarrow$ ${{\mathit e}^{+}}{{\mathit e}^{-}}$ anything$)/\Gamma_{\text{total}}$+ $\Gamma($ ${{\overline{\mathit b}}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ anything$)/\Gamma_{\text{total}}$
($\Gamma_{75}$+ $\Gamma_{76})/\Gamma$
$\Gamma($ ${{\overline{\mathit b}}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ anything$)/\Gamma_{\text{total}}$
$\Gamma_{76}/\Gamma$