${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \rho}^{0}}{{\mathit X}{(214)}}$ , ${{\mathit X}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
S042.484
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{418}$ ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \rho}^{0}}{{\mathit X}{(214)}}$ , ${{\mathit X}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}}$ $<1.73 \times 10^{-8}$ CL= 90%
Category: Light unflavored meson modes
Note: ${{\mathit X}{(214)}}$ is a hypothetical particle of mass 214 MeV/c${}^{2}$ reported by the HyperCP experiment, Physical Review Letters 94 021801 (2005)
The following data is related to the above value:
$\Gamma({{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit \rho}^{0}}{{\mathit X}{(214)}}$ , ${{\mathit X}}$ $\rightarrow$ ${{\mathit \mu}^{+}}{{\mathit \mu}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{418}/\Gamma$