WHAT ABOUT THE CONTRIBUTION FROM REGGEONS IN HARD PROCESS OF STRONG-INTERACTIONS

We discuss in this paper the possible contributions from IRrho (rho-re ggeon associated with rho meson) in DIS process on protons. Using resu lts from phenomenologicaI analysis of high energy pi-N charge-exchange scattering process, we get the expression of effective propagator of IRrho and the coupling constant beta(rho) between IRrho and light quar ks. As a simple and concrete example, we use them to evaluate the cont ributions of IRrho to F-2(x, Q(2)) from charge-exchange photoproductio n quark-pair process, gamma + p --> n + q(u) + (q) over bar(d)(--> n + X), in HERA kinematical regions. For comparison, we also evaluate co ntributions both from pomeron and partons in the same process. The rat io of contributions in F-2(x, Q(2)) from IRrho versus IP is larger tha n 1%, therefore, the former may be tested experimentaly.