Understanding the nature of baryon resonances

• DOI: 10.48550/arxiv.2401.04901
• Publication Date: 2024-01-01
• Authors: Derek B. Leinweber; Curtis D. Abell; Liam Hockley; Waseem Kamleh; Zhan-Wei Liu; Finn M. Stokes; A. W. Thomas; Jia-Jun Wu
• Keywords: Lattice (music)

This presentation opens with a brief review of lattice QCD calculations showing the $2s$ radial excitation nucleon sits at approximately 2 GeV, well above Roper resonance position. We then proceed to reconcile this observation experimental scattering data. While idea dressing quark-model states in coupled-channel analysis describe data has been around for decades, it's now possible bring these descriptions finite-volume confrontation lattice-QCD calculations. combination and experiment demands that we reconsider our preconceived notions about its spectrum. close discussion an unanticipated resolution missing baryon resonances problem.