Numerical analysis of the pi(+)pi(-) atom lifetime in ChPT

Authors
Gasser, J Lyubovitskij, VE Rusetsky, A
Citation
J. Gasser et al., Numerical analysis of the pi(+)pi(-) atom lifetime in ChPT, PHYS LETT B, 471(2-3), 1999, pp. 244-250
Citations number
35
Categorie Soggetti
Physics
Journal title
PHYSICS LETTERS B
ISSN journal
03702693 → ACNP
Volume
471
Issue
2-3
Year of publication
1999
Pages
244 - 250
Database
ISI
SICI code
0370-2693(199912)471:2-3<244:NAOTPA>2.0.ZU;2-K
Abstract
We apply Chiral perturbation theory at one loop to analyze the general form ula Ibr the pi(+) pi(-) atom lifetime derived recently in the framework of QCD [A. Gall ct al., Phys. Lett. B 462 (1999) 335]. The corresponding analy tic expression is investigated numerically, and compared with recent work i n the literature. (C) 1999 Elsevier Science B.V. All rights reserved.