Quasielastic $\overrightarrow{^{3}\mathrm{He}}(\overrightarrow{e},{e'})$ Asymmetry in the Threshold Region

TL;DR

This study measures the double-spin asymmetry in electron-helium-3 scattering near the breakup threshold, providing critical tests for theoretical models of few-body nuclear systems.

Contribution

It presents new experimental data on spin asymmetries in helium-3 and compares these results with advanced Faddeev calculations, validating modern nuclear theories.

Findings

Faddeev calculations agree well with experimental data

Modern nuclear potentials effectively describe the asymmetry

Results constrain models of few-body nuclear interactions

Abstract

A measurement of the double-spin asymmetry from electron-$^{3}$He scattering in the threshold region of two- and three-body breakup of $^{3}$He was performed at Jefferson Lab, for Q$^{2}$ values of 0.1 and 0.2 (GeV/$c$)$^{2}$. The results of this measurement serve as a stringent test of our understanding of few-body systems. When compared with calculations from plane wave impulse approximation and Faddeev theory, we found that the Faddeev calculations, which use modern nuclear potentials and prescriptions for meson-exchange currents, demonstrate an overall good agreement with data.