${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}}$  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
S042.153
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{224}$ ${{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}}$ ($1.08$ $\pm0.23$) $ \times 10^{-5}$ S=1.5  1673
Category: Charmonium modes
The following data is related to the above value:
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$\Gamma({{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}})/\Gamma({{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}^{\,'}{(958)}})$
$\Gamma_{224}/\Gamma_{237}$
$\Gamma({{\mathit B}^{0}}$ $\rightarrow$ ${{\mathit J / \psi}{(1S)}}{{\mathit \eta}})/\Gamma_{\text{total}}$
$\Gamma_{224}/\Gamma$