The magnetic form factor of the deuteron in chiral effective field theory

TL;DR

This paper calculates the deuteron's magnetic form factor using chiral effective field theory up to a specific order, fitting low-energy constants to data, and finds good agreement with experimental measurements at low momentum transfers.

Contribution

It provides a detailed calculation of the deuteron magnetic form factor in chiral EFT up to order eP^4, including fitting two low-energy constants to experimental data.

Findings

The calculated form factor agrees with data for Q^2 < 0.35 GeV^2.

Two low-energy constants are fit to experimental data and are of natural size.

The approach extends the understanding of electromagnetic properties of the deuteron in chiral EFT.

Abstract

We calculate the magnetic form factor of the deuteron up to O(eP^4) in the chiral EFT expansion of the electromagnetic current operator. The two LECs which enter the two-body part of the isoscalar NN three-current operator are fit to experimental data, and the resulting values are of natural size. The O(eP^4) description of G_M agrees with data for momentum transfers Q^2 < 0.35 GeV^2.