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Repulsion and absorption of the Σ-nucleus potential for Σ−−5He in the 6Li(π−,K+) reaction

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タイトル: Repulsion and absorption of the Σ-nucleus potential for Σ−−5He in the 6Li(π−,K+) reaction
著者: Harada, Toru 著作を一覧する
Honda, Ryotaro 著作を一覧する
Hirabayashi, Yoshiharu 著作を一覧する
発行日: 2018年 2月 1日
出版者: American Physical Society (APS)
誌名: Physical Review C
巻: 97
号: 2
開始ページ: 024601
出版社 DOI: 10.1103/PhysRevC.97.024601
抄録: We study phenomenologically inclusive spectra of the 6Li(π-,K+) reaction at 1.2 GeV/c within a distorted-wave impulse approximation with the optimal Fermi-averaging π-p→K+Σ-t matrix. We attempt to clarify the property of a Σ-nucleus potential for Σ--5He by comparing the calculated spectra with the data of the J-PARC E10 experiment. The result shows that the repulsive and absorptive components of the Σ--5He potential provide the ability to explain the data of the continuum spectra in Σ and Λ regions; the strengths of VΣ=+30±10 MeV and WΣ=-26±2 MeV are favored within the Woods-Saxon potential, consistent with analyses for heavier nuclei. Effects of the size and potential range for Σ--5He in the neutron excess of (N-Z)/(N+Z)= 0.2 are also discussed.
Rights: ©2018 American Physical Society
資料タイプ: article
URI: http://hdl.handle.net/2115/68585
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 平林 義治

 

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