Spin-dependent three-nucleon force effects on nucleon-deuteron scattering

TL;DR

This paper develops a phenomenological three-nucleon force model that accurately describes polarization observables in low-energy nucleon-deuteron scattering and explores the effects of different force components at higher energies.

Contribution

The paper introduces a new three-nucleon force model with spin-dependent components that improves the description of polarization observables in N-d scattering.

Findings

Model reproduces three-nucleon binding energy and polarization data at 3 MeV.

Predictions show component-specific effects on polarization observables at higher energies.

The model enhances understanding of spin-dependent three-nucleon interactions.

Abstract

We construct a phenomenological three-nucleon force (3NF) model that gives a good description of polarization observables in elastic nucleon-deuteron (N-$d$) scattering at a low energy together with a realistic nucleon-nucleon force and a 3NF arising from the exchange of two pions. Parameters of the model, which consists of spin-independent, spin-orbit, and tensor components, are determined to reproduce the three-nucleon binding energy and polarization observables in N-d scattering at 3 MeV. Predictions of the model 3NF on N-d polarization observables at higher energies are examined, and effects of each component on the observables are investigated.