Three-nucleon force effects in polarization transfers from the doubly spin-polarized initial neutron-deuteron state to the outgoing neutron in neutron-deuteron scattering

TL;DR

This paper investigates how three-nucleon forces influence polarization transfer observables in neutron-deuteron scattering, highlighting specific measurements that could reveal significant 3NF effects at higher energies.

Contribution

It introduces new polarization transfer observables in nucleon-deuteron scattering and analyzes their sensitivity to three-nucleon force effects, identifying promising measurements for experimental investigation.

Findings

Large 3NF effects up to 40% observed in certain polarization transfer coefficients.

$K_{y,y}^{y'}$ in elastic nd scattering shows high sensitivity to 3NF effects.

Identifies promising observables for experimental detection of 3NF effects.

Abstract

We discuss new spin observables presently accessible to measurement in the proton-deuteron (pd) system, namely polarization transfer coefficients from doubly spin-polarized initial state to the outgoing nucleon in the elastic nucleon-deuteron (Nd) scattering and in the nucleon-induced deuteron breakup reactions. The sensitivity of these observables to three-nucleon force (3NF) effects is investigated and compared to sensitivities of the constituent standard single polarization transfer coefficients in the neutron-deuteron (nd) system. $K_{y,y}^{y'}$ in elastic nd scattering, for which large 3NF effects, up to 40\%, have been found at higher energies, seems the most promising observable to measure.