An example of resonance saturation at one loop
High Energy Physics - Phenomenology
2008-11-26 v2 Nuclear Theory
Abstract
We argue that the large-Nc expansion of QCD can be used to treat a Lagrangian of resonances in a perturbative way. As an illustration of this we compute the L_10 coupling of the Chiral Lagrangian by integrating out resonance fields at one loop. Given a Lagrangian and a renormalization scheme, this is how in principle one can answer in a concrete and unambiguous manner questions such as at what scale resonance saturation takes place.
Cite
@article{arxiv.hep-ph/0107062,
title = {An example of resonance saturation at one loop},
author = {O. Cata and S. Peris},
journal= {arXiv preprint arXiv:hep-ph/0107062},
year = {2008}
}
Comments
9 pages, 5 figures. Enlarged discussion, results unchanged. To be published in Phys. Rev. D