Abstract
The effect of the three-nucleon forces on the triton binding energy ( E T) is investigated. Two different types of three-nucleon potentials are considered, one involving 2π-exchange ( V ππF ) and the other involving 2σ-exchange ( V SSF) which is an approximation to 3π exchange. Both V ππF and V SSF are constructed using the πN scattering amplitude extrapolated to off (pion) mass shell subject to PCAC. The contribution of V ππF and V SSF to e t are calculated in the first-order perturbation using the triton wave function obtained by solving the Faddeev equations with the Reid soft-core potential. The Fujita-Miyazawa force is also investigated as a special case. We find that the effect of V ππF on E T is sensitive to the assumed pionic form factor and is small due to cancellation between the πN s-d wave and p-wave contributions. The effect of V SSF is also found to be small.
Published Version
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