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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 | 2018/09/24 |
| 形態種別 | 研究論文 |
| 査読 | 査読あり |
| 標題 | $\bar{K}\bar{D} N$ molecular state as a "$u u d s \bar{c}$ pentaquark" in a three-body calculation |
| 執筆形態 | その他 |
| 掲載誌名 | Physical Review C |
| 巻・号・頁 | 100(015203) |
| 著者・共著者 | Junko Yamagata-Sekihara,Takayasu Sekihara |
| 概要 | We predict a new three-body hadronic molecule composed of antikaon $\bar{K}$,
anticharm meson $\bar{D}$, and nucleon $N$ with spin/parity $J^{P} = 1/2^{+}$ and isospin $I = 1/2$. This state behaves like an explicit pentaquark state because its minimal quark configuration is $u u d s \bar{c}$ or $u d d s \bar{c}$. Owing to the attraction between every pair of two hadrons, in particular the $\bar{K}\bar{D}$ attraction which dynamically generates $D_{s 0} (2317)^{-}$ and $\bar{K} N$ attraction which dynamically generates $\Lambda (1405)$, the $\bar{K}\bar{D} N$ system is bound, and its eigenenergy is calculated as $3244 - 17 i$ MeV in a nonrelativistic three-body potential model. We discuss properties of this $\bar{K} \bar{D} N$ quasibound state which emerge uniquely in three-body dynamics. |
| DOI | 10.1103/PhysRevC.100.015203 |
| arXiv ID | arXiv:1809.08896 |