Unitarization of the complete meson-meson scattering at
one loop in Chiral Perturbation Theory
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2001
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Amer Inst Physics
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Abstract
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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©Amer Inst Physics.
Internation Workshop on Quantum Chromodynamics - Theory and Experiment. (2001. Bari, Italia).
Work partially supported from the Spanish CICYT projects AEN97-1693, FPA2000-0956, PB98-0782 and BFM2000-1326.