H dibaryon in the QCD sum rule
N. Kodama, M. Oka, T. Hatsuda
Abstract
The QCD sum rule is applied to the H dibaryon and is compared to the flavor non-singlet di-nucleon. We find that the H dibaryon is almost degenerate to the di-nucleon in the SU(3)flavor limit and therefore is not deeply bound as far as th\ e threshold parameter is adjusted not to have a di-nucleon bound state. After introducing the SU(3)f breaking effects, the H dibaryon is found to be bound by 40 MeV below the ΛΛ threshold.
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