arXiv:nucl-th/0106052·v2·Nuclear Theory
Interactions between Octet Baryons in the SU_6 Quark model
Y. Fujiwara (1) · M. Kohno (2) · C. Nakamoto (3) · Y. Suzuki (4) ((1) Department of Physics, Kyoto University, Kyoto, Japan, (2) Physics Division, Kyushu Dental College, Kitakyushu, Japan, (3) Suzuka National College of Technology, Suzuka, Japan, (4) Department of Physics, Niigata University, Niigata, Japan)
Abstract
The baryon-baryon interactions for the complete baryon octet (B_8) are investigated in a unified framework of the resonating-group method, in which the spin-flavor SU_6 quark-model wave functions are employed. Model parameters are determined to reproduce properties of the nucleon-nucleon system and the low-energy cross section data for the hyperon-nucleon interaction. We then proceed to explore B_8 B_8 interactions in the strangeness S=-2, -3 and -4 sectors. The S-wave phase-shift behavior and total cross sections are systematically understood by 1) the spin-flavor SU_6 symmetry, 2) the special role of the pion exchange, and 3) the flavor symmetry breaking.
Comments: 11 pages, 6 figures, submitted to Phys. Rev. C (Rapid Communication)