Baryon Electromagnetic Properties in Partially Quenched Heavy Hadron Chiral Perturbation Theory

TL;DR

This paper computes the electromagnetic properties of heavy baryons using partially quenched heavy hadron chiral perturbation theory, aiding lattice QCD extrapolations for these properties.

Contribution

It introduces calculations of heavy baryon electromagnetic properties at next-to-leading order in a partially quenched framework, including new relations between form factors.

Findings

Provides formulas for electromagnetic form factors of heavy baryons.

Develops charge matrices suitable for lattice QCD simulations.

Derives relations between sextet electromagnetic and transition form factors.

Abstract

The electromagnetic properties of baryons containing a heavy quark are calculated at next-to-leading order in partially quenched heavy hadron chiral perturbation theory. Calculations are performed for three light flavors in the isospin limit and additionally for two light non-degenerate flavors. We use partially-quenched charge matrices that are easy to implement on the lattice. The results presented are necessary for the light quark mass extrapolation and zero-momentum extrapolation of lattice QCD and partially quenched lattice QCD calculations of heavy hadron electromagnetic properties. Additionally relations between the sextet electromagnetic form factors and transition form factors are derived.