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

A. Rusetsky (Bern University; Dubna; HEPI; J. Gasser (Bern University); JINR; Tbilisi University); Tomsk University); V. E. Lyubovitskij (Bern University

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

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arxiv hep-ph/9910438 v1 pith:645BYFVQ submitted 1999-10-21 hep-ph

J. Gasser (Bern University) , V. E. Lyubovitskij (Bern University , JINR , Dubna , Tomsk University) , A. Rusetsky (Bern University , HEPI , Tbilisi University) This is my paper · ORCID

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keywords atomlifetimeanalysisanalyticanalyzeapplychiralchpt

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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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