${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{b}}}{(2S)}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M048.14
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{26}$ ${{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{b}}}{(2S)}}$ $<6.2 \times 10^{-4}$ CL= 90% 350
Category: Radiative decays
The following data is related to the above value:
$\Gamma({{\mathit \Upsilon}{(3S)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \eta}_{{{b}}}{(2S)}})/\Gamma_{\text{total}}$
$\Gamma_{26}/\Gamma$