${{\mathit \eta}}$ $\rightarrow$ 2 ${{\mathit \pi}^{0}}{{\mathit \gamma}}$   Decay Mode Summary INSPIRE   PDGID:
S014.103
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{27}$ ${{\mathit \eta}}$ $\rightarrow$ 2 ${{\mathit \pi}^{0}}{{\mathit \gamma}}$ $<5 \times 10^{-4}$ CL= 90% 238
Category: Charge conjugation ($\mathit C$), Parity ($\mathit P$), Charge conjugation ${\times }$ Parity ($\mathit CP$), or Lepton Family number ($\mathit LF$) violating modes
Note: (C) CHARGE CONJUGATION ($\mathit C$) INVARIANCE
The following data is related to the above value:
$\Gamma($ ${{\mathit \eta}}$ $\rightarrow$ 2 ${{\mathit \pi}^{0}}{{\mathit \gamma}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{27}/\Gamma$