The Inverse Amplitude Method and Heavy Baryon Chiral Perturbation Theory applied to pion-nucleon scattering

Details The Inverse Amplitude Method and Heavy Baryon Chiral Perturbation Theory applied to pion-nucleon scattering The Inverse Amplitude Method and Heavy Baryon Chiral Perturbation Theory applied to pion-nucleon scattering

1999-09-30

arxiv.org/abs/hep-ph/9909568v1

Nucl.Phys. A675 (2000) 96c-99c

Physics

High Energy Physics

High Energy Physics - Phenomenology

Talk given at the 8th International Conference on Hadron Spectroscopy, HADRON99, August 24-28, 1999, Beijing, China. 4 pages L

Scientific paper

10.1016/S0375-9474(00)00225-6

We report on our present work, where by means of the Inverse Amplitude Method we unitarize the elastic pion nucleon scattering amplitudes of Heavy Barion Chiral Perturbation Theory at O(q^3). We reproduce the scattering up to the inelastic thresholds including the Delta(1232) resonance. The fitted chiral constants are rather different from those obtained by fitting the extrapolated threshold parameters for the non-unitarized theory.

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