Lambda(Lambda)over-bar,Lambda(Lambda)over-bar-gamma and Lambda(Lambda)over-bar-pi(0) Productions in J/psi Decay

The channels of J/psi decay into lambda(lambda)over-bar, lambda(lambda)over-bar-gamma and lambda(lambda)over-bar-pi(0) are analyzed with 7.8 x 10(6) J/psi events collected by BES detector at BEPC Collider. The branching ratios for three channels and the angular distribution for the first channel are measured. The branching ratios are Br (J/psi --> lambda(lambda)over-bar) = (1.08 +/- 0.06 +/- 0.24) x 10(-3), Br (J/psi --> lambda(lambda)over-bar-gamma) < 1.6 x 10(-4)(90% CL) and Br (J/psi --> lambda(lambda)over-bar>pi(0)) = (2.3 +/- 0.7 +/- 0.8) x 10(-4) respectively. The angular distribution for J/psi --> lambda(lambda)over-bar is dN/dcos theta = N-0 (1 + alpha cos(2) theta)alpha cos2 theta), alpha = 0.52 +/- 0.33 +/- 0.13.