Hybrid Mesons
By C. Meyer, E. Swanson. 2015
187 citations recorded by the source corpus.
A review of the theoretical and experimental status of hybrid hadrons is presented. The states $\pi_1(1400)$, $\pi_1(1600)$, and $\pi_1(2015)$ 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.
Subfields: Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/949381038ceacda43acda557c2c56e50507e087e
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In Nuclear and High Energy Physics
Citations in the corpus
- Exotic Hadrons: Review and Perspectives (2016, unknown): “[28] C.”
- Heavy-quark QCD exotica (2016, background): “These states are called hybrids [56], while states that are dominated by gluonic degrees of freedom are called glueballs.”
- Nonstandard heavy mesons and baryons: Experimental evidence (2017, unknown): “A recent review of hybrid mesons by Meyer and Swanson (24) points out limitations in this naive but useful 30-year old picture and provides references to current computations based on the lattice gauge theory.”
- Exotics: Heavy pentaquarks and tetraquarks (2017, background): “In the meanwhile, hybrids have been offered as templates for other exotic hadrons as well [314, 315].”