pi+pi- Atom in Chiral Theories
High Energy Physics - Phenomenology
2007-05-23 v1
Abstract
We review the existing theoretical approaches to the study of the observables of hadronic atoms. In the relativistic perturbative approach based on the Bethe-Salpeter equation and Chiral Perturbation Theory we derive the general expression for the pi+pi- atom lifetime. The lowest-order correction to the relativistic Deser-type formula for the atom width is predicted to be 6.1\pm 3.1 %.
Keywords
Cite
@article{arxiv.hep-ph/9807474,
title = {pi+pi- Atom in Chiral Theories},
author = {M. A. Ivanov and V. E. Lyubovitskij and E. Z. Lipartia and A. G. Rusetsky},
journal= {arXiv preprint arXiv:hep-ph/9807474},
year = {2007}
}
Comments
7 pages, LaTeX-file (dubna98.sty) Talk given at the International Workshop "Hadronic Atoms and Posirtonium in the Standard Model", 26-31 May 1998, Dubna, Russia