✦ LIBER ✦

The inversed amplitude method and heavy baryon chiral perturbation theory applied to pion-nucleon scattering

✍ Scribed by J.R. Peláez; A.Gómez Nicola

Publisher: Elsevier Science
Year: 2000
Tongue: English
Weight: 247 KB
Volume: 675
Category: Article
ISSN: 0375-9474
DOI: 10.1016/s0375-9474(00)00225-6

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✦ Synopsis

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(qa). We reproduce the scattering up to the inelastic thresholds including the A(1232) resonance. The fitted chiral constants are rather different from those obtained by fitting the extrapolated threshold parameters for the non-unitarized theory.