${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$   Decay Mode Summary INSPIRE   PDGID:
M009.6
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{12}$ ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ ($4.55$ $\pm0.28$) $ \times 10^{-5}$ 373
Category: ${{\mathit \rho}{(770)}^{0}}$ decays
Note: The ${{\mathit \omega}}{{\mathit \rho}}$ interference is then due to ${{\mathit \omega}}{{\mathit \rho}}$ mixing only, and is expected to be small. If ${{\mathit e}}{{\mathit \mu}}$ universality holds, $\Gamma\mathrm {( {{\mathit \rho}^{0}} \rightarrow {{\mathit \mu}^{+}} {{\mathit \mu}^{-}} )}$ = $\Gamma\mathrm {( {{\mathit \rho}^{0}} \rightarrow {{\mathit e}^{+}} {{\mathit e}^{-}} )}{\times }$ 0.99785.
The following data is related to the above value:
$\Gamma($ ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ $)/\Gamma($ ${{\mathit \rho}{(770)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $)$
$\Gamma_{12}/\Gamma_{7}$