https://doi.org/10.1051/epjconf/201919901005
Recent results of the pion-nucleon scattering and the widths of the delta and Roper resonances in BChPT
1 Institute for Advanced Simulation, Institut für Kernphysik and Jülich Center for Hadron Physics, Forschungszentrum Jülich, D-52425 Jülich, Germany
2 Tbilisi State University, 0186 Tbilisi, Georgia
* e-mail: j.gegelia@fz-juelich.de
Published online: 1 February 2019
Recent calculations of the pion-nucleon scattering in covariant baryon chiral perturbation theory with explicit delta resonances are presented. Two-loop results of the widths of the Δ and Roper resonances are discussed in the framework of an effective field theory with nucleons, pions and the Roper and delta resonances as dynamical degrees of freedom.
© The Authors, published by EDP Sciences, 2019
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