English

A unitary model for meson-nucleon scattering

Nuclear Theory 2008-11-26 v3

Abstract

In an effective Lagrangian model employing the K-matrix approximation we extract nucleon resonance parameters. To this end we analyze simultaneously all available data for reactions involving the final states πN\pi N, ππN\pi\pi N, ηN\eta N and KΛK \Lambda in the energy range mN+mπs1.9m_N + m_{\pi} \le \sqrt s \le 1.9 GeV. The background contributions are generated consistently from the relevant Feynman amplitudes, thus significantly reducing the number of free parameters.

Keywords

Cite

@article{arxiv.nucl-th/9708051,
  title  = {A unitary model for meson-nucleon scattering},
  author = {T. Feuster and U. Mosel},
  journal= {arXiv preprint arXiv:nucl-th/9708051},
  year   = {2008}
}

Comments

Revised version. 60 pages, 17 figures. Two figures and a short discussion (\pi N \to \eta N, K \Lambda amplitudes) added, typos and minor errors in the citations corrected

R2 v1 2026-07-22T18:43:01.642Z