The Roper Resonance: Still Controversial 60 Years Later
High Energy Physics - Phenomenology
2026-02-18 v1
Abstract
Few baryon resonances have generated as much discussion, even controversy, as the first positive parity excited state with nucleon quantum numbers. We re-examine the issue using insight gained from lattice QCD, complemented by Hamiltonian effective field theory. In doing so, we also examine the distinction between a state that can be naturally described as a quark model state and one that is dynamically generated.
Cite
@article{arxiv.2602.15320,
title = {The Roper Resonance: Still Controversial 60 Years Later},
author = {Anthony W Thomas},
journal= {arXiv preprint arXiv:2602.15320},
year = {2026}
}
Comments
Contribution to volume celebrating Prof. Roper's 90th birthday