Unitarization of the complete meson-meson scattering at one loop in Chiral Perturbation Theory

Details Unitarization of the complete meson-meson scattering at one loop in Chiral Perturbation Theory Unitarization of the complete meson-meson scattering at one loop in Chiral Perturbation Theory

2001-09-10

arxiv.org/abs/hep-ph/0109074v1

AIP Conf.Proc. 602 (2001) 34-39

Physics

High Energy Physics

High Energy Physics - Phenomenology

To appear in the proceedings of QCD@work: International Workshop on QCD: Theory and Experiment. Martina Franca (Italy) June 16

Scientific paper

10.1063/1.1435909

We report on our one-loop calculation of all the two meson scattering amplitudes within SU(3) Chiral Perturbation Theory, i.e. with pions, kaons and etas. Once the amplitudes are unitarized with the coupled channel Inverse Amplitude Method, they satisfy simultaneously the correct low-energy chiral constraints and unitarity. We obtain a remarkable description of meson-meson scattering data up to 1.2 GeV including the scattering lengths and seven light resonances.

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