Exotic hadron states
Abstract
Many charmonium-like and bottomonium-like resonances have been observed by the Belle, Babar, CLEO and BESIII collaborations in the past decade. They are difficult to fit in the conventional quark model and thus are considered as candidates of exotic hadrons, such as multi-quark states, meson molecules, and hybrids. In this talk, we first briefly introduce the method of QCD sum rules and then provide a short review of the mass spectra of the quarkonium-like tetraquark states and the heavy quarkonium hybrids in the QCD sum rules approach. Possible interpretations of the resonances are briefly discussed.
Keywords
Cite
@article{arxiv.1411.0585,
title = {Exotic hadron states},
author = {Wei Chen and J. Ho and T. G. Steele and R. T. Kleiv and B. Bulthuis and D. Harnett and T. Richards and Shi-Lin Zhu},
journal= {arXiv preprint arXiv:1411.0585},
year = {2014}
}
Comments
7 pages. Presentation at the XXX-th International Workshop on High Energy Physics "Particle and Astroparticle Physics, Gravitation and Cosmology: Predictions, Observations and New Projects", June 23-27, 2014, in Protvino, Moscow region, Russia