Angular Distributions and Generalized Moment Analysis for the Doubly Radiative Decay J/ψ→γγV
- Received Date: 1900-01-01
- Accepted Date: 1900-01-01
- Available Online: 1992-08-05
Abstract: The doubly radiative decay process J/ψ→γ+X,X→γ+V,V→2P(or 3P) is discussed in this paper.For the intermediate state X with various spin-parity JP,the corresponding helicity formalism of angular distribution formulas and the moments developed from the generalized moment analysis are presented.They are helpful for determining the spin of the intermediate state.