${{\boldsymbol \Upsilon}_{{2}}{(1D)}}$ $\rightarrow$ ${{\boldsymbol \eta}}{{\boldsymbol \Upsilon}{(1S)}}$ INSPIRE search

$\Gamma($ ${{\mathit \Upsilon}_{{2}}{(1D)}}$ $\rightarrow$ ${{\mathit \eta}}{{\mathit \Upsilon}{(1S)}}$ $)/\Gamma($ ${{\mathit \Upsilon}_{{2}}{(1D)}}$ $\rightarrow$ ${{\mathit \gamma}}{{\mathit \gamma}}{{\mathit \Upsilon}{(1S)}}$ $)$
$\Gamma_{3}/\Gamma_{1}$
M177R01