Tribaryon Configurations and Three Nucleon Repulsions at Short Distance

Abstract

We investigate the three baryon interaction in terms of tribaryon configuration which is compact nine quark system by constructing color-spin-flavor wave function satisfying the Pauli principle. By comparing the color-spin interaction of compact tribaryon configuration against the lowest three baryon threshold within a constituent quark model, we show that the three baryon forces have to be repulsive at short distance. Our work identifies the origin of the repulsive nuclear three-body forces including the hyperons at short distance that are called for from phenomenological considerations starting from nuclear matter to the maximum mass of a neutron star.