https://doi.org/10.1140/epja/i2002-10256-8
Perturbative versus nonperturbative effects at medium energies in the 
reaction
1
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
* e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract
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
