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Repulsion and absorption of the Σ-nucleus potential for Σ−−5He in the 6Li(π−,K+) reaction
| Title: | Repulsion and absorption of the Σ-nucleus potential for Σ−−5He in the 6Li(π−,K+) reaction |
| Authors: | Harada, Toru Browse this author →KAKEN DB | | Honda, Ryotaro Browse this author | | Hirabayashi, Yoshiharu Browse this author →KAKEN DB |
| Issue Date: | 1-Feb-2018 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review C |
| Volume: | 97 |
| Issue: | 2 |
| Start Page: | 024601 |
| Publisher DOI: | 10.1103/PhysRevC.97.024601 |
| Abstract: | 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 |
| Type: | article |
| URI: | http://hdl.handle.net/2115/68585 |
| Appears in Collections: | 情報基盤センター (Information Initiative Center) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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Submitter: 平林 義治
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