强子衰变过程J╱ψ→V+X,X→V+V的角分布分析

Angular Distribution Analysis for the Hadronic Decay Process J/φ→V+X,X→V+V

本文讨论了J/的强子衰变过程J/→V_1+X,X→V_2+V_3,V_3,V_3→2P(或3P)(其中V_i代表矢量介子,P代表赝标介子)。对于具有不同自旋-宇称J^p的中间态X,得到了相应的角分布的螺旋度形式。这些公式对于利用BEPC上得到的J/事例,确定上述过程中间态X的自旋-宇称是有帮助的。

The hadronic decay process J/Ψ→V_1+X,X→V_2+V_(3,)V_(2,)V_3→ 2P(or 3P) (here V_i and P stand for vector and pseudoscalar meson, respectively) has been discussed in this paper. For the intermediate state X with various spin-parity J^p, the corresponding helicity formalism of angular distribution formulas have been presented. They are helpful for determining the spin-parity of the intermediate state in above process by using the J/Ψ events obtained from BEPC.