A phenomenological analysis of antiproton interactions at low energies

Details A phenomenological analysis of antiproton interactions at low energies A phenomenological analysis of antiproton interactions at low energies

2000-02-04

arxiv.org/abs/nucl-th/0002015v1

Phys.Lett. B483 (2000) 353-359

Physics

Nuclear Physics

Nuclear Theory

10 pages, 4 figures

Scientific paper

10.1016/S0370-2693(00)00625-0

We present an optical potential analysis of the antiproton-proton interactions at low energies. Our optical potential is purely phenomenological, and has been parametrized on data recently obtained by the Obelix Collaboration at momenta below 180 MeV/c. It reasonably fits annihilation and elastic data below 600 MeV/c, and allows us for an evaluation of the elastic cross section and rho-parameter down to zero kinetic energy. Moreover we show that the mechanism that depresses antiproton-nucleus annihilation cross sections at low energies is present in antiproton-proton interactions too.

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