QCD Correlators at Large NC

Details QCD Correlators at Large NC QCD Correlators at Large NC

2005-10-12

arxiv.org/abs/hep-ph/0510163v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

4 pages, 1 table and 2 figures. Proceedings of the talk given at the International Conference on Quantum Chromodynamics, 2-9 J

Scientific paper

This talk explores the spin--1 correlators up to O(alpha_s) through a large NC resonance theory. The phenomenological analyses of this kind must take these corrections into account since they produce a larger impact than the first OPE condensates. It is also necessary to separate low and high energy regimes; fixing the parameters of the lightest multiplets through perturbative QCD arguments is unfair and introduces errors in the determination of the condensates and resonance parameters. This separation of regimes improves our understanding of the Minimal Hadronical Approximation. The study at O(alpha_s) already allows discerning between different hadronical models, where the Regge-like mass spectrum shows the best agreement to phenomenology.

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