Omega baryon electromagnetic form factors from lattice QCD

TL;DR

This study computes the electromagnetic form factors of the Omega baryon using lattice QCD with dynamical fermions, providing insights into its internal structure and magnetic properties.

Contribution

It introduces a lattice QCD methodology to determine Omega baryon form factors, including the electric quadrupole form factor, with comparisons to experimental and previous lattice results.

Findings

Calculated Omega baryon magnetic moment and charge radius.

Determined dominant and subdominant form factors using specialized sequential sources.

Results are consistent with experimental data and previous lattice calculations.

Abstract

We present results on the Omega baryon electromagnetic form factors using N_f= 2 + 1 dynamical domain-wall fermion configurations corresponding to a pion mass of about 330 MeV. We construct appropriate sequential sources for the determination of the two dominant form factors GE0 and GM1 as well as a sequential source that isolates the subdominant electric quadrupole form factor GE2. We calculate the Omega baryon magnetic moment, mu_omega, and electric charge radius, <r_E0>^2, and compare to experiment, for the case of mu_omega, and to other lattice calculations.