Abstract
Three-body-force contributions entering three-nucleon equations are discussed within the relativistic cluster-dynamical scattering formalism recently proposed by Haberzettl. It is argued that, in addition to the three-body forces usually taken into account, there is an effective enhancement of two-nucleon-force contributions in the medium of three nucleons. The dominant enhancement of this type, a one-pion-exchange three-body force, is included in a five-channel triton binding-energy calculation based on the Paris potential. It is found to provide an increased binding of about 0.6 MeV, a value which closely corresponds to the amount by which the binding energy obtained in coupled-channel calculations with explicit Δ degrees of freedom differs from experiment.
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References
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Haberzettl, H., Parke, W.C. (1994). Cluster-Dynamical Treatment of Three-Nucleon Forces. In: Bakker, B.L.G., van Dantzig, R. (eds) Few-Body Problems in Physics ’93. Few-Body Systems, vol 7. Springer, Vienna. https://doi.org/10.1007/978-3-7091-9352-5_39
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DOI: https://doi.org/10.1007/978-3-7091-9352-5_39
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