Electromagnetic Structure and Reactions of Few-Nucleon Systems in $\chi$EFT

TL;DR

This paper reviews recent developments in constructing nucleon-nucleon potentials and electromagnetic currents within chiral effective field theory, applying them to calculate properties and reactions of few-nucleon systems.

Contribution

It introduces a systematic approach to derive electromagnetic operators in $ ext{chi}$EFT up to one loop and applies these to compute static properties and radiative capture processes in light nuclei.

Findings

Calculated magnetic moments of deuteron and trinucleons.

Analyzed thermal neutron capture reactions on light nuclei.

Demonstrated the effectiveness of $ ext{chi}$EFT} in describing electromagnetic properties.

Abstract

We summarize our recent work dealing with the construction of the nucleon-nucleon potential and associated electromagnetic currents up to one loop in chiral effective field theory ($\chi$EFT). The magnetic dipole operators derived from these currents are then used in hybrid calculations of static properties and low-energy radiative capture processes in few-body nuclei. A preliminary set of results are presented for the magnetic moments of the deuteron and trinucleons and thermal neutron captures on $p$, $d$, and $^3$He.