${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$   Decay Mode Summary INSPIRE   PDGID:
S032.45
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{303}$ ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ $<8.5 \times 10^{-7}$ CL= 90% 932
Category: $\Delta \mathit C$ = 1 weak neutral current ($\mathit C1$) modes, Lepton Family number ($\mathit LF$) violating modes, Lepton ($\mathit L$) or Baryon ($\mathit B$) number violating modes
Note: (C1) Allowed by higher-order electroweak interactions.
The following data is related to the above value:
$\Gamma($ ${{\mathit D}^{0}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}$ $)/\Gamma_{\text{total}}$
$\Gamma_{303}/\Gamma$