Chiral quark model with relativistic kinematics

H. Garcilazo and A. Valcarce
Phys. Rev. C 68, 035207 – Published 18 September 2003
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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 σ 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

Authors & Affiliations

H. Garcilazo* and A. Valcarce

  • Grupo de Física Nuclear, Universidad de Salamanca, E-37008 Salamanca, Spain

  • *Permanent address: Escuela Superior de Física y Matemáticas, Instituto Politécnico Nacional, Edificio 9, 07738 México Distrito Federal, Mexico.

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Vol. 68, Iss. 3 — September 2003

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