Perturbative versus nonperturbative effects at medium energies in the reaction
Institute of Nuclear Physics, PL-31-342, Kraków, Poland
2 University of Rzeszów, PL-35-959, Rzeszów, Poland
3 Institut für Kernphysik, Forschungszentrum Jülich, D-52425, Jülich, Germany
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The interplay of pQCD, pion exchange and FSI effects is studied for the reaction in the region of 2 GeV GeV. We find strong interference effects between pQCD and soft-pion-exchange amplitudes up to GeV. We discuss to which extend the conventional hadronic FSI effects cloud the pQCD effects. We study multipole soft- and hard-scattering effects as well as the coupling between final-state hadronic channels.
© Società Italiana di Fisica and Springer-Verlag, 2003