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arXiv · 2209.04855

Three-nucleon system: Irreducible and reducible contributions of the three-nucleon force

A. Deltuva·P. U. Sauer
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Abstract

The three-nucleon bound and scattering equations are solved in momentum space for a coupled-channel Hamiltonian. The Hamiltonian couples the purely nucleonic sector of Hilbert space with a sector in which one nucleon is excited to a $Δ$ isobar. The interaction consists of irreducible two-baryon and irreducible three-baryon potentials. The calculation keeps only the purely nucleonic one among the irreducible three-baryon potentials. The coupled-channel two-baryon potential yields additional reducible contributions to the three-nucleon force. The Coulomb interaction between the two protons is included using the method of screening and renormalization. Three-nucleon force effects on the bound-state energies and on observables of elastic nucleon-deuteron scattering and breakup are studied.

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A. Deltuva, P. U. Sauer. 2022-09-11. Three-nucleon system: Irreducible and reducible contributions of the three-nucleon force. https://doi.org/10.1103/physrevc.91.034002

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