Regge-like quark-antiquark excitations in the effective-action formalism
Abstract
Radial excitations of the quark-antiquark string sweeping the Wilson-loop area are considered in the framework of the effective-action formalism. Identifying these excitations with the daughter Regge trajectories, we find corrections which they produce to the constituent quark mass. The energy of the quark-antiquark pair turns out to be mostly saturated by the constituent quark masses, rather than by the elongation of the quark-antiquark string. Specifically, while the constituent quark mass turns out to increase as the square root of the radial-excitation quantum number, the energy of the string increases only as the fourth root of that number.
Keywords
Cite
@article{arxiv.1103.5984,
title = {Regge-like quark-antiquark excitations in the effective-action formalism},
author = {D. Antonov and J. E. F. T. Ribeiro},
journal= {arXiv preprint arXiv:1103.5984},
year = {2012}
}
Comments
11 pages, 2 figures, talk given at the International Workshop on QCD Green's Functions, Confinement and Phenomenology, 5-9 September 2011, Trento, Italy