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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

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.

Language

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English

Journal

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Physical Review C

Volume

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100

Number

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1

Pages

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p.015203_1 - 015203_12

Publication Year/Month

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2019/07

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Held date

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Patent information

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Paper URL

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

DOI for research data

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Keywords

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no keyword

Research Facility

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Press Release

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Article of JAEA R&D Review

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Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:23.19

Category:Physics, Nuclear

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