Speaker
Dr
Kyungil Kim
(RISP/IBS)
Description
We investigate the properties of H-dibaryon using a QCD sum approach with explicit diquark fields. In our previous study, the phenomenological ud-diquark mass was obtained from the sum rule analysis for the Λ assuming that its structure is composed by a diquark and a spectator quark. In same way, we obtain the properties of qs-diquark from Ξ_{c;b} which are expected to have a good qs-diquark structure. Using the previously determined properties of diquarks, the mass of H-dibaryon is calculated when it is composed of three diquarks. We calculate the mass of H-dibaryon in both SU(3)_f symmetric and non-symmetric cases and attempt to compare with the results from lattice calculation and other models.
| Keywords | H-dibaryon, QCD sum rule, di-quark |
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Author
Dr
Kyungil Kim
(RISP/IBS)
Co-authors
Prof.
Daisuke Jido
(Yukawa Institute for Theoretical Physics)
Prof.
Su Houng Lee
(Yonsei University)
