Observation and branching fraction measurement of the decay $J/\psi \to \bar{p}{\Sigma }^{+}{K}_S^0+c.c.$

M. Ablikim, M. N. Achasov, P. Adlarson +612

The first observation of the decays $J/\psi \to \bar{p}{\Sigma }^{+}{K}_S^0$ and $J/\psi \to p{\bar{\Sigma }}^{-}{K}_S^0$ is reported using $(10087\pm 44)\times 10^6$ $J\!/\!…