%0 Journal Article
%A Gómez Nicola, Ángel
%A Nieves, J.
%A Peláez Sagredo, José Ramón
%A Ruiz Arriola, E.
%T Improved unitarized heavy baryon chiral perturbation theory for π N scattering to fourth order
%D 2004
%@ 0556-2821
%U https://hdl.handle.net/20.500.14352/51400
%X 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 Delta(1232) resonance, the convergence problems, and the power counting of the chiral parameters.
%~