CONTRIBUTION OF REGGEON IN CHARGE-EXCHANGE PROCESSES OF DEEP-INELASTIC SCATTERING

The experimental results on maximum pseudo-rapidity eta(max) distribut ion in the charge exchange processes e + P --> e + N + X(X means anyth ing) are discussed. The contributions of reggeon from Regge phenomenol ogy and of pi(+)-exchange from pion cloud model are calculated. The re sults show that neither the R-p-exchange nor the pion cloud model alon e can explain the experimental data well, but after considering these two processes together, by using Monte Carlo simulation, a good agreem ent between the theoretical results and experimental data is found.