Baryon and Meson Excited States
Abstract
The masses of fifteen baryon sets and twenty-four meson sets of three or more equal-quantum excited states are fitted by a simple two-parameter logarithm function, , where is the level of radial excitation. The conjecture is made that accurately measured masses using Breat-Wigner PDG2024 data at fixed for baryons and for mesons of all equal-quantum baryons (including LHCb exotic s) and meson (including , , , , and ) excited states are related by the logarithm function used here; at least for the mass range of currently known excited states. Thus, a universal mass equation for equal-quantum excited-states sets is presented. The masses of twelve baryon sets and sixteen meson sets, with only two equal-quantum excited states in each set, using Breit-Wigner PDG2024 masses and their uncertainties, are fitted by thr universal mass equation.
Cite
@article{arxiv.2506.10646,
title = {Baryon and Meson Excited States},
author = {L. David Roper and Igor Strakovsky},
journal= {arXiv preprint arXiv:2506.10646},
year = {2025}
}
Comments
7 pages, 11 figures, contribution to the HADRON2025 Proceedings