1999/10/12 by A. Bianconi, G. Bonomi, Bianconi, A. +7
Physics and Astronomy · #FOS: Physical sciences #Nuclear Theory (nucl-th) #nucl-th
paper · pdf · doi:10.48550/arxiv.nucl-th/9910031
48 pages, 5 figures
arxiv created 1999/10/12 · arxiv updated 2009/12/01
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 pp and p-nucleus annihilation cross sections found in a recent experiment\citeobe1,obe2 we discuss some further possibilities, with a special attention to the optical potential model.