CONSTITUENT QUARK MODEL DESCRIPTION OF CHARMONIUM PHENOMENOLOGY

We review how quark models are able to describe the phenomenology of the harm meson sector. The spectroscopy and decays of charmonium and open charm mesons are described in a particular quark model and compared with the data and the results of other existing models in the literature. A quite reasonable global description of the heavy meson spectra is reached. A new assignment of the psi(4415) resonance as a 3D state leaving aside the 4S state to the X(4360) is tested through the analysis of the resonance structure in e+e-exclusive reactions around the psi(4415) energy region. We make tentative assignments of some of the XYZ mesons. To elucidate the structure of the 1(+) c (s) over bar states, i.e., D-s1 (2460) and D-s1 (2536), we study the strong decay properties of the D-s1(2536) meson. We also perform a calculation of the branching fractions or the semileptonic decays of B and Bs mesons into final states containing orbitally excited charmed and charmed-strange mesons, which have become a very important source of information about the structure of heavy mesons. Analysis of the nonleptonic B-meson decays into D(*) DsJ are also included.