Baryon Regge Trajectories in the Light of the $1/N_c$ Expansion
arXiv:0705.3055 · doi:10.1016/j.physletb.2007.08.057
Abstract
We analyze Regge trajectories in terms of the $1/N_c$ expansion of QCD. Neglecting spin-orbit contributions to the large $N_c$ baryon mass operator, we consider the evolution of the spin-flavor singlet component of the masses with respect to the angular momentum. We find two distinct and remarkably linear Regge trajectories for symmetric and for mixed symmetric spin-flavor multiplets.
8 pages, 1 figure, 2 tables, published version