Discrimination of $\Sigma$-nucleus potentials in the angular distribution of elastic scattering of $\Sigma^-$ hyperons from nuclei
Abstract
We theoretically investigate the elastic scattering of 50-MeV hyperons from Si and Pb in order to clarify the radial distribution of -nucleus (optical) potentials. The angular distributions of differential cross sections are calculated using several potentials that can explain experimental data of the atomic X-ray and (, ) reaction spectra simultaneously. The magnitude and oscillation pattern of the angular distributions are understood by the use of nearside/farside decompositions of their scattering amplitudes. It is shown that the resultant angular distributions can considerably discriminate among the radial distributions of the potentials that have a repulsion inside the nuclear surface and an attraction outside the nucleus with a sizable absorption.
Keywords
Cite
@article{arxiv.1201.2214,
title = {Discrimination of $\Sigma$-nucleus potentials in the angular distribution of elastic scattering of $\Sigma^-$ hyperons from nuclei},
author = {Toru Harada and Yoshiharu Hirabayashi},
journal= {arXiv preprint arXiv:1201.2214},
year = {2015}
}