Abstract
Several characteristic features of Pr distribution are studied on the basis of the multibody amplitude of urbaryon rearrangement model which is a generalization of the all-angle formula for two-body hadronic reactions at high energies. Several characteristic structures of ampli tudes of the model are compared with other models. The seagull behaviour observed in the longitudinal momentum dependence of the average Pr of pion is explained as a result of long range correlation among the hadrons linked with each other by rearranged urbaryons. It is also shown that the increase of average Pr with particle mass and the dependence on unitary spins such as etrangeness and charm are well reproduced by the model amplitudes.
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