Two loops calculation in chiral perturbation theory and the unitarization program of current algebra

Details Two loops calculation in chiral perturbation theory and the unitarization program of current algebra Two loops calculation in chiral perturbation theory and the unitarization program of current algebra

1997-07-18

arxiv.org/abs/hep-ph/9707394v1

Phys.Rev. D57 (1998) 4108-4113

Physics

High Energy Physics

High Energy Physics - Phenomenology

13 pages, Revtex 3.0, no figures, submitted to Phys. Lett. B

Scientific paper

10.1103/PhysRevD.57.4108

In this paper we compare two loop Chiral Perturbation Theory (ChPT)
calculation of pion-pion scattering with the unitarity second order correction
to the current algebra soft-pion theorem. It is shown that both methods lead to
the same analytic structure for the scattering amplitude.

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