Abstract
Our analyais[1] has shown that there exist sensitive and insensitive regions to determine the spin of in the general helicity formalism. Whereas it just falls into the insensitive region by using current data of . If the number of events is not sufficient it is difficult to determine the spin of . In this paper we generalize the moment analysis. We define the photon angular distribution for the moment of process and the weighted moment by choosing appropriate weight function. They provide an effective criterion to determine the spin of . We also use the method to discuss puzzle for process .
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