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25 April 2024

» arxiv » nucl-th/9910031

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Annihilation of antiprotons on nuclear targets at low energies: a simple analysis
A. Bianconi ; G.Bonomi ; E. Lodi Rizzini ; L. Venturelli ; A. Zenoni ;
Date:	12 Oct 1999
Subject:	nucl-th
Abstract:	We set up a plane wave impulse approximation (PWIA) formalism for the analysis of the annihilation cross sections of antinucleons on nuclear targets at very low momenta (below 100 MeV/c), where semiclassical approximations can’t be applied. Since, as we test here, PWIA fails in reproducing the unexpected ``inversion’’ behavior of the $ar{p}p$ and $ar{p}-$nucleus annihilation cross sections found in a recent experimentcite{obe1,obe2} we discuss some further possibilities, with a special attention to the optical potential model.
Source:	arXiv, nucl-th/9910031
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