Nature of the light scalar mesons
High Energy Physics - Phenomenology
2008-11-26 v1 High Energy Physics - Experiment
Nuclear Theory
Abstract
Despite the apparent simplicity of meson spectroscopy, light scalar mesons cannot be accommodated in the usual structure. We study the description of the scalar mesons below 2 GeV in terms of the mixing of a chiral nonet of tetraquarks with conventional states. A strong diquark-antidiquark component is found for several states. The consideration of a glueball as dictated by quenched lattice QCD drives a coherent picture of the isoscalar mesons.
Cite
@article{arxiv.hep-ph/0508142,
title = {Nature of the light scalar mesons},
author = {J. Vijande and A. Valcarce and F. Fernandez and B. Silvestre-Brac},
journal= {arXiv preprint arXiv:hep-ph/0508142},
year = {2008}
}
Comments
14 pages, 1 figure, accepted for publication in Phys. Rev. D