Baryon-baryon interactions in the flavor SU(3) limit from full QCD simulations on the lattice

Takashi Inoue, Noriyoshi Ishi, Sinya Aoki, Takumi Doi, Tetsuo Hatsuda, Yoichi Ikeda, Keiko Murano, Hidekatsu Nemura, Kenji Sasaki

Research output: Contribution to journalArticlepeer-review

98 Citations (Scopus)

Abstract

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 8S 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.

Original languageEnglish
Pages (from-to)591-603
Number of pages13
JournalProgress of Theoretical Physics
Volume124
Issue number4
DOIs
Publication statusPublished - Oct 2010
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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