Physical foundations of nonrelativistic quark models: Bosonic spectrum and Regge trajectories

Summary  The bosonic spectrum and the Regge trajectories related with two specific nonrelativistic models (volume and surface models) for the quark-antiquark system are computed in detail. A connection between the model that gives the best predictions and a more fundamental field theory for the quarks is also considered and discussed. Within the framework of theSU 3 symmetry the scalar or pseudoscalar field theories are favoured by our analysis in comparison with the vector one.