Numerical analysis of the pi+pi- atom lifetime in ChPT
J. Gasser, V. E. Lyubovitskij, A. Rusetsky
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.
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