${{\mathit \chi}_{{{c1}}}{(1P)}}$ $\rightarrow$ ${{\mathit a}_{{{0}}}{(980)}^{+}}{{\mathit \pi}^{-}}$ + c.c. $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M055.36
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{26}$ ${{\mathit \chi}_{{{c1}}}{(1P)}}$ $\rightarrow$ ${{\mathit a}_{{{0}}}{(980)}^{+}}{{\mathit \pi}^{-}}$ + c.c. $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ ($3.2$ $\pm0.4$) $ \times 10^{-3}$ S=2.1 
Category: Hadronic decays
The following data is related to the above value:
$\Gamma({{\mathit \chi}_{{{c1}}}{(1P)}}$ $\rightarrow$ ${{\mathit a}_{{{0}}}{(980)}^{+}}{{\mathit \pi}^{-}}$ + c.c. $\rightarrow$ ${{\mathit \eta}}{{\mathit \pi}^{+}}{{\mathit \pi}^{-}})/\Gamma_{\text{total}}$
$\Gamma_{26}/\Gamma$