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

Harada, Toru; Honda, Ryotaro; Hirabayashi, Yoshiharu

Physical Review C, 2018, 97(2), 024601

Permalink : https://hdl.handle.net/2115/68585

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ファイル	フォーマット	サイズ	閲覧回数	説明
PhysRevC.97.024601-1	pdf	1.21 MB	667

アクセス権	open access
URI	https://hdl.handle.net/2115/68585
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 ; Honda, Ryotaro ; Hirabayashi, Yoshiharu
e-Rad_Researcher 70238187 著者名 Harada, Toru
著者名 Honda, Ryotaro
e-Rad_Researcher 60271714 著者名 Hirabayashi, Yoshiharu
言語	英語
発行日	2018-02-01
出版者	American Physical Society (APS)
収録物名	Physical Review C
巻(号)	97(2)
ページ	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.
資源タイプ	学術雑誌論文
出版タイプ	Version of Record
権利情報	©2018 American Physical Society
PISSN	2469-9985
NCID	AA00773613
関連情報 (isIdenticalTo)	出版社版DOI https://doi.org/10.1103/PhysRevC.97.024601