Physics – Nuclear Physics – Nuclear Theory
Scientific paper
1993-06-21
Phys.Lett. B319 (1993) 47-52
Physics
Nuclear Physics
Nuclear Theory
9 pages, LaTeX, figures can be obtained from the authors
Scientific paper
10.1016/0370-2693(93)90779-H
The production of antiprotons in proton-nucleus and nucleus-nucleus reactions is calculated within the relativistic BUU approach employing proper selfenergies for the baryons and antiprotons and treating the p-bar annihilation nonperturbatively. The differential cross section for the antiprotons is found to be very sensitive to the p-bar selfenergy adopted. A detailed comparison with the available experimental data for p-nucleus and nucleus-nucleus reactions shows that the antiproton feels a moderately attractive mean-field at normal nuclear matter density which is in line with a dispersive potential extracted from the free annihilation cross section.
Cassing Wolfgang
Maruyama Tomoyuki
Mosel Ulrich
Teis Stefan
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