The Fundamental Nature of Low-Energy Pion-Nucleon Interactions
Abstract
A historical review of pion-nucleon interactions at low energy is presented, with aims toward an introductory, pedagogic approach focusing on issues germane to current research. These topics include the use of chiral effective field theory, the sigma term, qualitative understanding of low-energy phase shifts, the physics of the resonance, and isospin violation. A theme is that low-energy pion-nucleon scattering is directly related to QCD via effective field theory. Another theme is that modern needs regarding the pion-nucleon sigma term and the study of isospin violation requires a better low-energy data set.
Keywords
Cite
@article{arxiv.2208.12873,
title = {The Fundamental Nature of Low-Energy Pion-Nucleon Interactions},
author = {Gerald A. Miller},
journal= {arXiv preprint arXiv:2208.12873},
year = {2022}
}
Comments
16 pages, 7 figures, prepared as a chapter of the book "75 Years of Pion" edited by Igor Strakovsky, Alexey Petrov, and Nicolai Popov. arXiv admin note: text overlap with arXiv:2205.01108, arXiv:0907.4569, arXiv:2111.09849 by other authors. Those authors are cited. This version has several improvements