1999/11/08 by M. Baldicchi, Baldicchi, M.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #hep-ph
paper · pdf · doi:10.48550/arxiv.hep-ph/9911268
6 pages, 2 figures, Talk given at the XVII Autumn School "QCD: Perturbative or Nonperturbative?", Lisbon (Portugal), September 29 - October 4, 1999. To appear in the proceedings
arxiv created 1999/11/09 · arxiv updated 2009/11/30
In previous works, a squared mass operator M2 and a more common centre of frame Hamiltonian HCM for the quark-antiquark system were obtained by using the only assumption that ln W (W being the Wilson loop correlator) can be written in QCD as the sum of its perturbative expression and an area term. We evaluated the spectrum of these operators by neglecting all the spin-dependent terms but for a spin-spin term. We succeeded in reproducing rather well the entire meson spectrum and for the light-light systems we found straight Regge trajectories with the right slope and intercepts. A first attempt to study the contribution of the spin dependent terms has been made.