Constraining Quark-Hadron Duality at Large-Nc
High Energy Physics - Phenomenology
2009-11-07 v1 High Energy Physics - Theory
Nuclear Theory
Abstract
Quark-meson duality for two-point functions of vector and axial-vector QCD currents is investigated in the large-Nc approximation. We find that the joint constraints of duality and chiral symmetry imply degeneracy of excited vector and axial-vector mesons in the large-Nc limit. We compare model-independent constraints with expectations based on the Veneziano-Lovelace-Shapiro string model. Several models of duality are constructed, and phenomenological implications are discussed.
Cite
@article{arxiv.hep-ph/0106022,
title = {Constraining Quark-Hadron Duality at Large-Nc},
author = {S. R. Beane},
journal= {arXiv preprint arXiv:hep-ph/0106022},
year = {2009}
}
Comments
16 pages TeX, uses mtexsis.tex