Triton calculations with $π$ and $ρ$ exchange three-nucleon forces

Details Triton calculations with $π$ and $ρ$ exchange three-nucleon forces Triton calculations with $π$ and $ρ$ exchange three-nucleon forces

1995-04-10

arxiv.org/abs/nucl-th/9504012v1

Phys.Rev.C51:2896-2904,1995

Physics

Nuclear Physics

Nuclear Theory

17 pages Revtex 3.0, 4 figures. Accepted for publication in Phys. Rev. C

Scientific paper

10.1103/PhysRevC.51.2896

The Faddeev equations are solved in momentum space for the trinucleon bound state with the new Tucson-Melbourne $\pi$ and $\rho$ exchange three-nucleon potentials. The three-nucleon potentials are combined with a variety of realistic two-nucleon potentials. The dependence of the triton binding energy on the $\pi NN$ cut-off parameter in the three-nucleon potentials is studied and found to be reduced compared to the case with pure $\pi$ exchange. The $\rho$ exchange parts of the three-nucleon potential yield an overall repulsive effect. When the recommended parameters are employed, the calculated triton binding energy turns out to be very close to its experimental value. Expectation values of various components of the three-nucleon potential are given to illustrate their significance for binding.

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