Event Generator for ψ＇Decays of VP and PP Modes
Ye Shu · 2000
A convenient generator, based on the existing framework of BES simulation, applicable generally to both ψ＇ and J/ψ decays of VP and PP modes, is established. The corresponding angular distribution is taken into account. A similar generator is also established for the successive J/ψ decay in the process of ψ＇→X+ J/ψ. In the measurement of branching ratios for ψ＇→γη, γη＇, ωπ~o, π~+ π~-, K~+ K~-, this generator is used to determine the selection efficiency and estimate the background.