Regge trajectories in light and heavy mesons: the pattern of appearances and possible dynamical explanations
arXiv:2009.05378 · doi:10.1142/9789811219313_0018
Abstract
I briefly review the Regge approach to the hadron spectrum and advocate a dynamical emergence of principal quantum number in the known spectrum of light non-strange mesons. Further it is shown how the linear radial trajectories with universal slope can be extended to heavy quarkonia and a qualitative string interpretation is given. After that I discuss a recently proposed non-string model leading to a natural appearance of linear Regge trajectories and explaining many mass relations.
6 pages, contribution to HADRON 2019. arXiv admin note: text overlap with arXiv:1606.05218