The qq spectra and the structure of the scalar mesons
J. Vijande, F. Fernandez, A. Valcarce
Abstract
The qq spectrum is studied within a chiral constituent quark model. It provides with a good fit of the available experimental data from light (vector and pseudoscalar) to heavy mesons including some recent results on charmonium. The 0++ light mesons and the new D states measured at different factories cannot be described as q q pairs and a tetraquark structure is suggested.
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