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A phenomenological analysis of antiproton interactions at low energies

A. Bianconi·G. Bonomi·M. P. Bussa·E. Lodi Rizzini·L. Venturelli·A. Zenoni
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Abstract

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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A. Bianconi, G. Bonomi, M. P. Bussa, E. Lodi Rizzini, L. Venturelli, A. Zenoni. 2000-02-04. A phenomenological analysis of antiproton interactions at low energies. https://doi.org/10.1016/s0370-2693(00)00625-0

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