Nature of the light scalar mesons
Journal Article
·
· Physical Review. D, Particles Fields
- Grupo de Fisica Nuclear and IUFFyM, Universidad de Salamanca, E-37008 Salamanca (Spain)
- Laboratoire de Physique Subatomique et de Cosmologie, 53 Avenue des Martyrs, F-38026 Grenoble Cedex (France)
Despite the apparent simplicity of meson spectroscopy, light scalar mesons cannot be accommodated in the usual qq 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 qq 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.
- OSTI ID:
- 20711233
- Journal Information:
- Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 3 Vol. 72; ISSN PRVDAQ; ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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