${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \Theta}{(1540)}}{{\overline{\mathit \Theta}}{(1540)}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit p}}{{\mathit K}^{-}}{{\overline{\mathit n}}}$ + c.c.  Decay Mode Summary INSPIRE   PDGID:
M070.205
Mode (*) Fraction ($\Gamma_i$ / $\Gamma$) Scale Factor/
Conf. Level		 P(MeV/c)  
$\Gamma_{152}$ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \Theta}{(1540)}}{{\overline{\mathit \Theta}}{(1540)}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit p}}{{\mathit K}^{-}}{{\overline{\mathit n}}}$ + c.c. $<1.1 \times 10^{-5}$ CL= 90%
Category: Decays involving hadronic resonances
Note: ${{\mathit \Theta}{(1540)}}$ is a hypothetical pentaquark state of 1.54 GeV/c${}^{2}$ mass and a width of less than 25 MeV/c${}^{2}$.
The following data is related to the above value:
$\Gamma($ ${{\mathit J / \psi}{(1S)}}$ $\rightarrow$ ${{\mathit \Theta}{(1540)}}{{\overline{\mathit \Theta}}{(1540)}}$ $\rightarrow$ ${{\mathit K}_S^0}$ ${{\mathit p}}{{\mathit K}^{-}}{{\overline{\mathit n}}}$ + c.c.$)/\Gamma_{\text{total}}$
$\Gamma_{152}/\Gamma$