Excited hadrons on the lattice: Baryons

TL;DR

This paper reports on lattice QCD calculations of excited baryon masses using variational methods and diverse interpolators, providing insights into baryon spectroscopy at near-physical pion masses.

Contribution

It introduces a comprehensive lattice approach with varied interpolators and smearing techniques to improve excited baryon state extraction.

Findings

Successful extraction of excited baryon masses

Use of diverse interpolators enhances state resolution

Results align with experimental baryon spectra

Abstract

We present results for masses of excited baryons from a quenched calculation with Chirally Improved quarks at pion masses down to 350 MeV. Our analysis of the correlators is based on the variational method. In order to provide a large basis set for spanning the physical states, we use interpolators with different Dirac structures and Jacobi smeared quark sources of different width. Our spectroscopy results for a wide range of ground state and excited baryons are discussed.