Hybrid Mesons
Abstract
A review of the theoretical and experimental status of hybrid hadrons is presented. The states , , and are thoroughly reviewed, along with experimental results from GAMS, VES, Obelix, COMPASS, KEK, CLEO, Crystal Barrel, CLAS, and BNL. Theoretical lattice results on the gluelump spectrum, adiabatic potentials, heavy and light hybrids, and transition matrix elements are discussed. These are compared with bag, string, flux tube, and constituent gluon models. Strong and electromagnetic decay models are described and compared to lattice gauge theory results. We conclude that while good evidence for the existence of a light isovector exotic meson exists, its confirmation as a hybrid meson awaits discovery of its iso-partners. We also conclude that lattice gauge theory rules out a number of hybrid models and provides a reference to judge the success of others.
Keywords
Cite
@article{arxiv.1502.07276,
title = {Hybrid Mesons},
author = {C. A. Meyer and E. S. Swanson},
journal= {arXiv preprint arXiv:1502.07276},
year = {2015}
}
Comments
60 pages, 32 figures, to be appear in Progress in Particle and Nuclear Physics. v2: additional discussion and references. arXiv admin note: text overlap with arXiv:1004.5516