Three-nucleon forces and the triton binding energy

Expectation values of the Tucson-Melbourne family of 2π, ρπ, and 2ρ exchange three-body forces and the Lisbon three-body force are obtained with two models of the triton. The triton wave functions used are solutions of the Faddeev equations with s-wave potentials. These coordinate space studies examine the effect of short-range pair correlations on the binding energy contribution of the three-body forces. The contribution of the 2π three-body force is attractive, the ρπ three-body force repulsive and much smaller, and the 2ρ three-body force negligible in these triton models.