Expectation values of the Tucson-Melbourne family of $2\pi$, $\rho \pi$, and $2\rho$ 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 $2\pi$ three-body force is attractive, the $\rho \pi$ three-body force repulsive and much smaller, and the $2\rho$ three-body force negligible in these triton models.

• Received 13 June 1984

DOI:https://doi.org/10.1103/PhysRevC.30.1366