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$$bar{K} bar{D} N$$ molecular state as a "$$u u d s bar{c}$$ pentaquark" in a three-body calculation

三体計算による、"$$u u d s bar{c}$$ペンタクォーク"に見える$$bar{K} bar{D} N$$分子状態

山縣 淳子*; 関原 隆泰

Yamagata-Sekihara, Junko*; Sekihara, Takayasu

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 $$D_{s0} (2317)^{-}$$ 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.

使用言語

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English

掲載資料名

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Physical Review C

巻

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100

号

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1

ページ数

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p.015203_1 - 015203_12

発行年月

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2019/07

発表会議名

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開催年月

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開催都市

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開催国

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キーワード

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no keyword

特許データ

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PDF

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論文URL

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https://doi.org/10.1103/PhysRevC.100.015203

研究データの公開先DOI

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使用施設

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広報プレスリリース

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論文解説記事
(成果普及情報誌)

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受委託・共同研究相手機関

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Access

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- Accesses

InCites™

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パーセンタイル：23.19

分野：Physics, Nuclear

Altmetrics

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