The A5 and the pion field
High Energy Physics - Phenomenology
2007-05-23 v2
Abstract
In this talk, an SU(Nf)xSU(Nf)Yang-Mills model with a compact extra-dimension is used to describe the spin-1 mesons and pions of massless QCD in the large-Nc. The right 4D symmetry and symmetry-breaking pattern is produced by imposing appropriate boundary conditions. The Goldstone boson fields are constructed using a Wilson line. We derive the low-energy limit (chiral lagrangian), discuss rho-meson dominance, sum rules between resonance couplings and the relation with the QCD high-energy behavior. Finally, we provide an analytic expression for the two-point function of vector and axial currents.
Cite
@article{arxiv.hep-ph/0510023,
title = {The A5 and the pion field},
author = {Johannes Hirn and Veronica Sanz},
journal= {arXiv preprint arXiv:hep-ph/0510023},
year = {2007}
}
Comments
Typos corrected