Baryon operators and spectroscopy in lattice QCD
LHP Collaboration: S. Basak, R. Edwards, R. Fiebig, G. Fleming, U. M., Heller, C. Morningstar, D. Richards, I. Sato, S. Wallace
TL;DR
This paper details the construction of baryon operators and correlators in lattice QCD to explore excited baryon spectra, focusing on symmetry properties and computational efficiency.
Contribution
It introduces a method for constructing irreducible lattice operators that reduces propagator inversions while enabling detailed spectral studies.
Findings
Operators transform irreducibly under lattice symmetries
Properties of example operators are analyzed using domain-wall fermion propagators
Method facilitates exploration of spatial and spin structures in baryons
Abstract
The construction of the operators and correlators required to determine the excited baryon spectrum is presented, with the aim of exploring the spatial and spin structure of the states while minimizing the number of propagator inversions. The method used to construct operators that transform irreducibly under the symmetries of the lattice is detailed, and the properties of example operators are studied using domain-wall fermion valence propagators computed on MILC asqtad dynamical lattices.
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