${{\mathit \eta}_{{c}}{(1S)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$   Decay Mode Summary INSPIRE   PDGID:
M026.51
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{57}$ ${{\mathit \eta}_{{c}}{(1S)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $<1.1 \times 10^{-4}$ CL= 90% 1485
Category: Charge conjugation ($\mathit C$), Parity ($\mathit P$), Lepton Family number ($\mathit LF$) violating modes
Note: (CP) $\mathit CP$ INVARIANCE
Note: (P) PARITY ($\mathit P$) INVARIANCE
The following data is related to the above value:
$\Gamma($ ${{\mathit \eta}_{{c}}{(1S)}}$ $\rightarrow$ ${{\mathit \pi}^{+}}{{\mathit \pi}^{-}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{57}/\Gamma$