${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit D}^{-}}{{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ + c.c.  Decay Mode Summary INSPIRE   JSON  (beta) PDGID:
M070.218
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{377}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit D}^{-}}{{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ + c.c. $<7.1 \times 10^{-8}$ CL= 90% 984
Category: Weak decays
The following data is related to the above value:
$\Gamma({{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit D}^{-}}{{\mathit e}^{+}}{{\mathit \nu}_{{{e}}}}$ + c.c.$)/\Gamma_{\text{total}}$
$\Gamma_{377}/\Gamma$