π+/π− Ratio and two particle production in Proton's fragmentation region by Monte Carlo simulation

Hadron jet at lowp _T is generated by Monte Carlo method using several models including our quark cascade model in which the recombination mechanism is taken into account. The predicted results from those models on π⁺/π^? ratio,K ⁺ /K ^? ratio, π^± meson spectra and π⁺/π^? ratio under π^± meson and Λ particle trigger, ratio between invariant two particle cross-section (p→π ⁺ /π ^? )/(p→π ^? /π ^? are compared with the experimental data. The effects of the asymmetric initialu- andd-quark distributions the scaling and its violation of particle spectra and particle ratios under the other particle trigger are discussed. Predictions from our recombination model fit to the experimental data fairly well.