Angular distributions of elastic scattering of Σ- hyperons from nuclei and the Σ-nucleus potentials

• Harada, Toru

• Hirabayashi, Yoshiharu

抄録

We theoretically investigate the elastic scattering of 50-MeV Σ- hyperons from 28Si and 208Pb in order to clarify the radial distribution of Σ-nucleus (optical) potentials. The angular distributions of differential cross sections are calculated using several potentials that can explain experimental data of the Σ- atomic x-ray and (π-, K+) 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 provide a clue to discriminating 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.

収録刊行物

• Physical Review C

  Physical Review C 86 (1), 014606-, 2012-07

  American Physical Society

詳細情報

• CRID: 1050001339011853312
• NII論文ID: 120004405569
• HANDLE: 2115/49738
• ISSN: 05562813
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles