The anomalous process gamma pi -> pi pi to two loops
High Energy Physics - Phenomenology
2009-11-07 v1
Abstract
The amplitude for the anomalous process gamma pi -> pi pi is evaluated to two loops in the chiral expansion by means of a dispersive method. The two new coupling constants that enter at this order are estimated via sum rules derived from a non-perturbative chiral approach. With these coupling constants fixed, the numerical results are given and compared with the available experimental information.
Cite
@article{arxiv.hep-ph/0102213,
title = {The anomalous process gamma pi -> pi pi to two loops},
author = {Torben Hannah},
journal= {arXiv preprint arXiv:hep-ph/0102213},
year = {2009}
}
Comments
23 pages, 4 figures