arXiv:1902.03395·v2·High Energy Physics — Phenomenology
Meson-baryon Scattering in Extend-on-mass-shell scheme at
Junxu Lu (1 and 2)🇨🇳 · Lisheng Geng (1)🇨🇳 · Xiulei Ren (3)🇩🇪 · Menglin Du (4) ((1) Nuclear Energy Engineering and International Research Center for Nuclei and Particles in the Cosmos Beijing Key Laboratory of Advanced Nuclear Materials and Physics, Beihang University, Beijing, China, (2) Groupe de Physique Théorique, IPN, Université Paris-Sud 11, Orsay, France, (3) Institut für Theoretische Physik II, Ruhr-Universität Bochum, (4) Helmholtz-Institut für Strahlen- und Kernphysik and Bethe Center for Theoretical Physics, Universität Bonn)🇩🇪
Abstract
In this present work, we study the scattering of a pseudoscalar meson off one ground state octet baryon in covariant baryon chiral perturbation theory up to the next-to-next-to-leading order. We remove the power counting breaking terms with the extended-on-mass-shell scheme. We perform the first combined study of the pion-nucleon and kaon-nucleon scattering data and show that the covariant baryon Chiral perturbation theory can provide a reasonable description of the experimental data for both channels.
Comments: 4 pages, 2 figures, presented by Junxu Lu at the 22th International Conference on Few-Body Problems in Physics, 9 - 13 July, 2018, Caen, France