Dependence of the H-particle mass on the effective meson-exchange potentials in a quark model

Abstract

We investigate the dependence of the H-particle mass on the effective meson-exchange potentials by adopting the recent SU 6 quark model developed for a unified description of the N N and Y N interactions. The results are sensitive to the magnitude of the attraction of the ΞN interaction and the strength of the ΛΛ - ΞN channel coupling. The H-particle may be bound when the ΛΛ - ΞN coupling effect is strong, which depends on the strength of the strange-meson exchange potentials and the flavor-symmetry breaking generated from the mass difference between ud and s quarks.