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$$N Omega$$ interaction; Meson exchanges, inelastic channels, and quasibound state

$$N Omega$$相互作用; 中間子交換、非弾性チャンネル、そして準束縛状態

関原 隆泰; 神谷 有輝*; 兵藤 哲雄*

Sekihara, Takayasu; Kamiya, Yuki*; Hyodo, Tetsuo*

Based on a baryon-baryon interaction model with meson exchanges, we investigate the origin of the strong attraction in the $$N Omega (^{5}S_{2})$$ interaction, which was indicated by recent lattice QCD simulations. The long-range part of the potential is constructed by the conventional mechanisms, the exchanges of the $$eta$$ meson and of the correlated two mesons in the scalar-isoscalar channel, denoted by "$$sigma$$" in the literature. The short-range part is represented by the contact interaction. With the present model parameters fit to reproduce the scattering length of the HAL QCD result of the nearly physical quark masses, we obtain the $$N Omega (^{5}S_{2})$$ quasibound state with its eigenenergy $$2611.3 - 0.7 i$$ MeV.

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パーセンタイル:79.4

分野:Physics, Nuclear

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