Improved unitarized heavy baryon chiral perturbation theory for πN scattering to fourth order

We extend our previous analysis of the unitarized pion-nucleon scattering amplitude including up to fourth order terms in heavy baryon chiral perturbation theory. We pay special attention to the stability of the generated Δ(1232) resonance, the convergence problems, and the power counting of the chi...

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Bibliographic Details
Authors: Gómez Nicola, Ángel, Nieves, J., Peláez Sagredo, José Ramón, Ruiz Arriola, E.
Format: article
Publication Date:2004
Country:España
Institution:Universidad Complutense de Madrid (UCM)
Repository:Docta Complutense
Language:English
OAI Identifier:oai:docta.ucm.es:20.500.14352/51734
Online Access:https://hdl.handle.net/20.500.14352/51734
Access Level:Open access
Keyword:51-73
Nucleon Scattering
Física-Modelos matemáticos
Física matemática
Description
Summary:We extend our previous analysis of the unitarized pion-nucleon scattering amplitude including up to fourth order terms in heavy baryon chiral perturbation theory. We pay special attention to the stability of the generated Δ(1232) resonance, the convergence problems, and the power counting of the chiral parameters.

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