Relationship between the quark condensate and low-energy Pi-Pi observables beyond O(p^4)
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
The two-flavor Gell-Mann-Oakes-Renner ratio is expressed in terms of low-energy pi-pi observables including the O(p^6) double chiral logarithms, computed in Generalized Chiral Perturbation Theory. It is found that their contribution is important and tends to compensate the one from the single chiral logarithms.
Keywords
Cite
@article{arxiv.hep-ph/0007348,
title = {Relationship between the quark condensate and low-energy Pi-Pi observables beyond O(p^4)},
author = {Luca Girlanda},
journal= {arXiv preprint arXiv:hep-ph/0007348},
year = {2007}
}
Comments
contribution to LNF Spring School, Frascati, 15-20 May, 2000