Abstract
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 meson) leads to an overall good description of the spectrum.
- Received 1 July 2003
DOI:https://doi.org/10.1103/PhysRevC.68.035207
©2003 American Physical Society