2003/08/04 by H. Garcilazo, A. Valcarce · 1 citation
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevc.68.035207
published as Phys.Rev. C68 (2003) 035207 · 10 pages, 2 figures. To appear in Phys. Rev. C
arxiv created 2003/08/04 · openalex publication_date 2003/09/18 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The nonstrange baryon spectrum is studied within a three-body model that incorporates relativistic kinematics. We found that the combined effect of relativistic kinematics together with the pion exchange between quarks is able to reverse the order of the first positive- and negative-parity nucleon excited states as observed experimentally. Including the chiral partner of the pion (the \ensuremathσ meson) leads to an overall good description of the spectrum.