arXiv:hep-ph/9910438·v1·High Energy Physics — Phenomenology
Numerical analysis of the pi+pi- atom lifetime in ChPT
J. Gasser (Bern University)🇨🇭 · V. E. Lyubovitskij (Bern University, JINR, Dubna and Tomsk University)🇨🇭 · A. Rusetsky (Bern University, JINR, Dubna and HEPI, Tbilisi University)🇨🇭
Abstract
We apply Chiral Perturbation Theory at one loop to analyze the general formula for the pi+pi- atom lifetime derived recently in the framework of QCD. The corresponding analytic expression is investigated numerically, and compared with recent work in the literature.
Comments: 11 pages