Quark-Model Baryon-Baryon Interaction and Its Applications to Hypernuclei

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Author(s)

Abstract

The quark-model baryon-baryon interaction fss2, proposed by the Kyoto-Niigata group, is a unified model for the complete baryon octet (B_8 = N, Λ, Σ and Ξ), which is formulated in a framework of the (3q)-(3q) resonating-group method (RGM) using the spin-flavor SU_6 quark-model wave functions and effective meson-exchange potentials at the quark level. Model parameters are determined to reproduce properties of the nucleon-nucleon system and the low-energy cross section data for the hyperon-nucleon scattering. Due to the several improvements including the introduction of vector-meson exchange potentials, fss2 has achieved very accurate description of the NN and YN interactions, comparable to various one-boson exchange potentials. We review the essential features of fss2 and our previous model FSS, and their predictions to few-body systems in confrontation with the available experimental data. Some characteristic features of the B_8B_8 interactions with the higher strangeness, S = -2, -3, -4, predicted by fss2 are discussed. These quark-model interactions are now applied to realistic calculations of few-body systems in a new three-cluster Faddeev formalism which uses two-cluster RGM kernels As for the few-body systems, we discuss the three-nucleon bound states, the ΛNN-ΣNN system for the hypertriton, the ααΛ system for ^9_ΛBe, and the ΛΛα system for ^6_<ΛΛ>He.

Journal

  • Progress of Theoretical Physics

    Progress of Theoretical Physics (156), 17-36, 2004-12-28

    Progress of Theoretical Physics

References:  44

Codes

  • NII Article ID (NAID)
    110001211795
  • NII NACSIS-CAT ID (NCID)
    AA00791466
  • Text Lang
    ENG
  • Article Type
    ART
  • ISSN
    03759687
  • NDL Article ID
    7203321
  • NDL Source Classification
    ZM35(科学技術--物理学)
  • NDL Call No.
    Z53-A468
  • Data Source
    CJP  NDL  NII-ELS  NDL-Digital 
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