A phenomenological analysis of antiproton interactions at low energies
Nuclear Theory
2009-11-06 v1
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.
Keywords
Cite
@article{arxiv.nucl-th/0002015,
title = {A phenomenological analysis of antiproton interactions at low energies},
author = {A. Bianconi and G. Bonomi and M. P. Bussa and E. Lodi Rizzini and L. Venturelli and A. Zenoni},
journal= {arXiv preprint arXiv:nucl-th/0002015},
year = {2009}
}
Comments
10 pages, 4 figures