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ヤマガタ ジュンコ
YAMAGATA JUNKO
山縣 淳子 所属 京都産業大学 理学部 物理科学科 職種 教授 |
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| 言語種別 | 英語 |
| 発行・発表の年月 | 2010 |
| 形態種別 | その他 |
| 査読 | 査読あり |
| 標題 | Mesonic and nonmesonic absorption of kaon in nuclear matter and Lambda(1405) doorway process |
| 執筆形態 | その他 |
| 掲載誌名 | INTERNATIONAL WORKSHOP ON CHIRAL SYMMETRY IN HADRONS AND NUCLEI |
| 出版社・発行元 | AMER INST PHYSICS |
| 巻・号・頁 | 1322,pp.339-+ |
| 著者・共著者 | T. Sekihara,J. Yamagata-Sekihara,D. Jido,Y. Kanada-En'yo |
| 概要 | The mesonic and nonmesonic absorptions of kaon into nuclear systems are investigated from a viewpoint of Lambda(1405) doorway process. Using a one-meson exchange model in the calculation of the nontrtesonic Lambda(1405)N -> YN transition and using the chiral unitary approach for the description of the Lambda(1405), we obtain the nonmesonic transition ratio Gamma(Lambda N)/Gamma(Sigma 0N) approximate to 1.2 which is almost independent of the nucleon density, and find the total nonmesonic decay width of the Lambda(1405) in uniform nuclear matter to be 22 MeV at the normal density. We also calculate the absorption for stopped K- in nuclear matter, and find that the "formation rate" of Lambda(1405) is important for the density dependence and the absolute value of the absorption potential of kaon in nuclear matter. |
| DOI | 10.1063/1.3542001 |
| ISSN | 0094-243X |