Scattering Amplitudes of QCD String
High Energy Physics - Theory
2013-02-12 v2 High Energy Physics - Phenomenology
Abstract
I review the derivation of large-N QCD meson scattering amplitudes in the Regge regime, where the effective theory of long strings applies in d=4. A special attention is payed to the reparametrization path integral which plays a crucial role in the consistency of off-shell amplitudes. I show how the linear Reggeon trajectory is obtained for QCD string in the mean-field approximation, which turns out to be exact for the Nambu-Goto string, and discuss the interrelation with perturbative QCD.
Keywords
Cite
@article{arxiv.1208.1209,
title = {Scattering Amplitudes of QCD String},
author = {Yuri Makeenko},
journal= {arXiv preprint arXiv:1208.1209},
year = {2013}
}
Comments
Talk: 21pp., 6 figs; v2: polished