# Spectrum of light- and heavy-baryons

## TL;DR

This paper uses a symmetry-preserving approach to calculate and predict the spectrum of light and heavy baryons, achieving high accuracy for known states and providing predictions for many unobserved ones.

## Contribution

It introduces a novel symmetry-preserving truncation method for bound-state equations to accurately compute baryon spectra and predict new states.

## Key findings

- Accurately describes 39 known baryon states with 3.6% mean-absolute-relative-difference.
- Predicts masses of 90 unobserved baryon states.
- Framework achieves high precision with only two parameters.

## Abstract

A symmetry-preserving truncation of the strong-interaction bound-state equations is used to calculate the spectrum of ground-state $J=1/2^+$, $3/2^+$ $(qq^\prime q^{\prime\prime})$-baryons, where $q, q^\prime, q^{\prime\prime} \in \{u,d,s,c,b\}$, their first positive-parity excitations and parity partners. Using two parameters, a description of the known spectrum of 39 such states is obtained, with a mean-absolute-relative-difference between calculation and experiment of 3.6(2.7)%. From this foundation, the framework is subsequently used to predict the masses of 90 states not yet seen empirically.