${{\mathit \Upsilon}_{{{2}}}{(1D)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \Upsilon}{(1S)}}$  Decay Mode Summary INSPIRE   PDGID:
M177.1
Mode Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level
P(MeV/c)  
$\Gamma_{1}$ ${{\mathit \Upsilon}_{{{2}}}{(1D)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \Upsilon}{(1S)}}$ seen 679
The following data is related to the above value:
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