Improved Unitarized Heavy Baryon Chiral Perturbation Theory for pion-nucleon Scattering to fourth order

Details Improved Unitarized Heavy Baryon Chiral Perturbation Theory for pion-nucleon Scattering to fourth order Improved Unitarized Heavy Baryon Chiral Perturbation Theory for pion-nucleon Scattering to fourth order

2003-12-11

arxiv.org/abs/nucl-th/0312034v1

Phys.Rev. D69 (2004) 076007

Physics

Nuclear Physics

Nuclear Theory

9 pages, 4 figures

Scientific paper

10.1103/PhysRevD.69.076007

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.

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