Pion-pion interaction at low energy
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
A brief discussion of the elastic pion-pion scattering amplitude to two loops in chiral perturbation theory is given. Some technical details of the evaluation of two-loop diagrams are addressed, and results relevant for the pionium decay are presented.
Cite
@article{arxiv.hep-ph/9808209,
title = {Pion-pion interaction at low energy},
author = {M. E. Sainio},
journal= {arXiv preprint arXiv:hep-ph/9808209},
year = {2007}
}
Comments
8 pages, 2 figures, Proc. Int. Workshop Hadronic Atoms and Positronium in the Standard Model, Dubna, Russia, May 26-31, 1998