Journal
PROGRESS OF THEORETICAL PHYSICS
Volume 124, Issue 4, Pages 591-603Publisher
PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE
DOI: 10.1143/PTP.124.591
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Funding
- High Energy Accelerator Research Organization (KEK) [2004:20105001, 20105003, 09-23 (FY2009)]
- Ministry of Education, Culture, Sports, Science and Technology [20340047]
- MEXT [22540268, 21105515]
- JSPS [21.5985]
- [13002001]
- Grants-in-Aid for Scientific Research [22540268, 21105515] Funding Source: KAKEN
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We investigate baryon-baryon (BB) interactions in the 3-flavor full QCD simulations with degenerate quark masses for all flavors. The BB potentials in the orbital S-wave are extracted from the Nambu-Bethe-Salpeter wave functions measured on the lattice. We observe strong flavor-spin dependences of the BB potentials at short distances. In particular, a strong repulsive core exists in the flavor-octet and spin-singlet channel (the 8(s) representation), while an attractive core appears in the flavor singlet channel (the 1 representation). We discuss the relation of such flavor-spin dependence with the Pauli exclusion principle at the quark level. The possible existence of an H-dibaryon resonance above the AA threshold is also discussed.
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