The energies of the low- lying isoscalar and isovector udss configurations with spin-parity J(P) = 0(+), 1(+) and 2(+) are calculated in a non-relativistic constituent quark model by using the variational method. The contributions of various parts of the quark-quark interacting potentials including the s-channel interaction are investigated, and the effect of different forms of the confinement potential is examined. The model parameters are determined by the same method as in our previous work, and they still can satisfactorily describe the nucleon-nucleon scattering phase shifts and the hyper...
