First observation of the decay chi(cJ) -g Sigma(+)(p)over-barK(S)(0)+ c.c. (J=0,1,2)
Using E1 radiative transitions psi(3686) -> gamma chi(cJ) from a sample of (448.1 +/- 2.9) x 10(6) psi(3686) events collected with the BESIII detector, the decays chi(cJ) -> Sigma(+)(p) over ...