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arXiv 1111.5098hep-lathep-phnucl-th
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格点上QCD全模拟的束缚H-二重子

Bound H-dibaryon from Full QCD Simulations on the Lattice

Takashi Inoue, for HAL QCD Collaboration

摘要:

利用HAL QCD合作组最近提出的一种研究格点量子色动力学中强子相互作用的新方法,我们研究了味SU(3)对称世界中H-重子存在的可能性.由Nambu-Bethe-Salpeter波函数导出了味-单重态重子-重子通道的势,证明了难以捉摸的H-双重子是一个束缚态,其束缚能为20- 50 MeV,赝标介子质量在469- 1171 MeV范围内.

英文摘要:

Using a new method recently proposed by the HAL QCD collaboration to study hadron interactions in lattice QCD, we investigate a possibility for an existence of the H-dibaryon in the flavor SU(3) symmetric world. A potential for the flavor-singlet baryon-baryon channel is derived from the Nambu-Bethe-Salpeter wave function, and the elusive H-dibaryon is shown to be a bound state, with the binding energy of 20--50 MeV for the pseudo-scalar meson masses in the range that 469--1171 MeV.

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