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Pion-pion interaction at low energy

M. E. Sainio
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Abstract

A brief discussion of the elastic pion-pion scattering amplitude to two loops in chiral perturbation theory is given. Some technical details of the evaluation of two-loop diagrams are addressed, and results relevant for the pionium decay are presented.

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M. E. Sainio. 1998-08-03. Pion-pion interaction at low energy. https://arxiv.org/abs/hep-ph/9808209

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