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arXiv · 1012.5928

Bound H-dibaryon in Flavor SU(3) Limit of Lattice QCD

Takashi Inoue·Noriyoshi Ishii·Sinya Aoki·Takumi Doi·Tetsuo Hatsuda·Yoichi Ikeda·Keiko Murano·Hidekatsu Nemura·Kenji Sasaki
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Abstract

The flavor-singlet H-dibaryon, which has strangeness -2 and baryon number 2, is studied by the approach recently developed for the baryon-baryon interactions in lattice QCD. The flavor-singlet central potential is derived from the spatial and imaginary-time dependence of the Nambu-Bethe-Salpeter wave function measured in N_f=3 full QCD simulations with the lattice size of L = 2, 3, 4 fm. The potential is found to be insensitive to the volume, and it leads to a bound H-dibaryon with the binding energy of 30 - 40 MeV for the pseudo-scalar meson mass of 673 - 1015 MeV.

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Takashi Inoue, Noriyoshi Ishii, Sinya Aoki, Takumi Doi, Tetsuo Hatsuda, Yoichi Ikeda, Keiko Murano, Hidekatsu Nemura, Kenji Sasaki. 2011-03-10. Bound H-dibaryon in Flavor SU(3) Limit of Lattice QCD. https://doi.org/10.1103/physrevlett.106.162002

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