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新山 雅之 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 | 2010/01 |
| 形態種別 | 論文集（書籍）内論文 |
| 査読 | 査読あり |
| 標題 | Photoproduction of Λ(1405) AT SPring-8/LEPS |
| 執筆形態 | その他 |
| 掲載誌名 | Hadron and Nuclear Physics 09: Osaka University, Japan, 16-19 November 2009 |
| 出版社・発行元 | World Scientific Publishing Co. |
| 巻・号・頁 | pp.46-50 |
| 著者・共著者 | M. Niiyama,LEPS |
| 概要 | Photoproduction of the A(1405) has been studied at Spring-8/LEPS in order to understand its production mechanisms and the internal structure. The ratios of A(1405) production to Σ0(1385) production were measured in two photon energy ranges: near the production threshold (1.5 <
Eγ < 2.0 GeV) and far from it (2.0 < Eγ < 2.4 GeV). The observed ratio decreases in the higher photon energy region, which may suggest different production mechanisms and form factors for these hyperon resonances. In addition to production cross sections, the measurement of the KNA* and K* NA* coupling using the photon beam asymmetry of A(1405) production is underway. The status of the analysis will be described. |
| DOI | 10.1142/9789814313933_0006 |