On the structure of the scalar and D mesons
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The ${q}\bar{q}$ 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. The new $D$ states measured at different factories are studied. The $0^{++}$ light mesons are analyzed as $q\bar q$ pairs or tetraquark structures.
9 pages, 3 figures. Contribution to the NAPP 2003 Conference
9 pages, 3 figures. Contribution to the NAPP 2003 Conference