Contribution of Reggeon in Charge Exchange Processes of Deep Inelastic Scattering

The experimental results on maximum pseudo-rapidity η_max distribution in the charge exchange processes e +P →e + N + X ( X means anything) are discussed. The contributions of reggeon from Regge phenomenology and of π⁺-exchange from pion cloud model are calculated. The results show that neither the R_ρ-exchange nor the pion cloud model alone can explain the experimental data well, but after considering these two processes together, by using Monte Carlo simulation, a good agreement between the theoretical results and experimental data is found.