${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{b}}}{(1S)}}$  Decay Mode Summary INSPIRE   PDGID:
M048.15
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{27}$ ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{b}}}{(1S)}}$ ($5.1$ $\pm0.7$) $ \times 10^{-4}$ 912
Category: Radiative decays
The following data is related to the above value:
$\Gamma($ ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{b}}}{(1S)}})/\Gamma_{\text{total}}$
$\Gamma_{27}/\Gamma$