Elastic Form Factors of $^{3,4}$He up to Large $Q^2$

TL;DR

This paper reports on measurements of elastic electron scattering off helium-3 and helium-4 nuclei at high momentum transfer, providing precise data on their charge and magnetic form factors up to 3.2 GeV$^2$.

Contribution

It presents new experimental data on helium elastic form factors at large $Q^2$, extending previous measurements and improving understanding of nuclear structure.

Findings

Accurate form factor data up to $Q^2$ of 3.2 GeV$^2$

Charge form factors for $^3$He and $^4$He measured

Magnetic form factor for $^3$He measured

Abstract

Elastic electron scattering off $^3$He and $^4$He has recently been studied at forward and backward scattering angles in Hall A at JLab. The results will provide accurate data on the elastic form factors, charge and magnetic for $^3$He and charge only for $^4$He, up to squared momentum transfer $Q^2$-values of 3.2 GeV$^2$.