${{\mathit \chi}_{{c1}}{(3872)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \eta}_{{c}}{(1S)}}$   Decay Mode Summary INSPIRE   PDGID:
M176.14
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{16}$ ${{\mathit \chi}_{{c1}}{(3872)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \eta}_{{c}}{(1S)}}$ $<0.14$ CL= 90% 745
The following data is related to the above value:
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$\Gamma($ ${{\mathit \chi}_{{c1}}{(3872)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \eta}_{{c}}{(1S)}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{16}/\Gamma$
$\Gamma($ ${{\mathit \chi}_{{c1}}{(3872)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}{{\mathit \eta}_{{c}}{(1S)}}$ $)$ ${\times }$ $\Gamma($ ${{\mathit \chi}_{{c1}}{(3872)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{16}\Gamma_{10}/\Gamma$