Universality of Regge and vibrational trajectories in a semiclassical   model
  The orbital and radial excitations of light-light mesons are studied in the framework of the dominantly orbital state description. The equation of motion is characterized by a relativistic kinematics supplemented by the usual funnel potential with a mixed scalar and vector confinement. The influence of finite quark masses and potential parameters on Regge and vibrational trajectories is discussed. The case of heavy-light mesons is also presented. 
Bernard Silvestre-Brac, Fabian Brau and Claude Semay