arXiv:hep-ph/9709302·v1·High Energy Physics — Phenomenology
Low-Energy Pion-Nucleon Interaction and the Sigma-Term
M.E. Sainio
Abstract
A dispersion framework, appropriate for discussing the low-energy pion-nucleon interaction, is reviewed. Sensitivity of the isoscalar D-amplitude at the unphysical Cheng-Dashen point to input from different phase shift analyses and low-energy experiments is discussed.
Comments: 6 pages, no figures