Constraining Quark-Hadron Duality at Large-Nc

Details Constraining Quark-Hadron Duality at Large-Nc Constraining Quark-Hadron Duality at Large-Nc

2001-06-01

arxiv.org/abs/hep-ph/0106022v1

Phys.Rev. D64 (2001) 116010

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages TeX, uses mtexsis.tex

Scientific paper

10.1103/PhysRevD.64.116010

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.

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