2012 Fiscal Year Final Research Report
Production and decay spectra of hypernuclei by double-charge exchange reactions, and hyperon mixing
| Project/Area Number |
22540294
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Osaka Electro-Communication University |
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Principal Investigator |
HARADA Toru 大阪電気通信大学, 工学部, 教授 (70238187)
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| Co-Investigator(Kenkyū-buntansha) |
HIRABAYASHI Yoshiharu 北海道大学, 情報基盤センター, 准教授 (60271714)
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| Co-Investigator(Renkei-kenkyūsha) |
UMEYA Atsushi 日本工業大学, 共通教育系, 講師 (20454580)
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| Research Collaborator |
KOIKE Takahisa 理化学研究所, 仁科センター, 協力研究員 (20391948)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 理論核物理 / 核反応 / ストレンジネス / ハイパー核 / 荷電交換 |
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| Research Abstract |
We have theoretically demonstrated production and decay of spectra of hypernuclei by double-charge exchange reactions, e.g. (Ｋ〓，Ｋ〓), (π〓，Ｋ〓), using the distorted-wave impulse approximation. A one-step reaction mechanism, in which adoorway state is populated owing to a hyperon mixing, has been investigated. The result shows that these spectra provide valuable information on properties of the 〓Ν－ΛΛ andΣΝ－ΛΝcoupling interactions in a comparison with the forthcoming J-PARC facilities, and it is strongly related to understanding of the inner structure of neutron stars.
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