Numerical analysis of the pi+pi- atom lifetime in ChPT
arXiv:hep-ph/9910438 · doi:10.1016/S0370-2693(99)01334-9
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.
11 pages