The reaction $πN \to ππN$ above threshold in chiral perturbation theory

Details The reaction $πN \to ππN$ above threshold in chiral perturbation theory The reaction $πN \to ππN$ above threshold in chiral perturbation theory

1997-03-03

arxiv.org/abs/hep-ph/9703218v1

Nucl.Phys. A619 (1997) 261-284

Physics

High Energy Physics

High Energy Physics - Phenomenology

29 pp, plain LaTeX, uses epsf, 15 figures

Scientific paper

10.1016/S0375-9474(97)00159-0

Single pion production off nucleons is studied in the framework of relativistic baryon chiral perturbation theory at tree level with the inclusion of the terms from the dimension two effective pion-nucleon Lagrangian. The five appearing low-energy constants are fixed from pion-nucleon scattering data. Despite the simplicity of the approach, most of the existing data for total and differential cross sections as well as for the angular correlation functions for incoming pion kinetic energies up to 400 MeV can be satisfactorily described.

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