Nature of the light scalar mesons
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Nature of the light scalar mesons

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Nature of the light scalar mesons

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Vijande Asenjo, Javier Perfil; Valcarce Mejía, Alfredo; Fernández González, Francisco; Silvestre-Brac, B.
This document is a artículoDate2005

Este documento está disponible también en : http://hdl.handle.net/10550/39096
Despite the apparent simplicity of meson spectroscopy, light scalar mesons cannot be accommodated in the usual q (q) over bar 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 q (q) over bar 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.

    Vijande Asenjo, Javier Valcarce Mejía, Alfredo Fernández González, Francisco Silvestre-Brac, B. 2005 Nature of the light scalar mesons Physical Review D 72 3 034025-1 034025-8
http://dx.doi.org/10.1103/PhysRevD.72.034025

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