Eur. Phys. J. A (2016) 52: 121
https://doi.org/10.1140/epja/i2016-16121-3

Regular Article - Theoretical Physics

Relativistic quark-diquark model of baryons with a spin-isospin transition interaction: Non-strange baryon spectrum and nucleon magnetic moments

¹ Universidad Nacional de Colombia, Bogotá, Colombia
² Dipartimento di Fisica and INFN, Università La Sapienza, Piazzale A. Moro 5, 00185, Roma, Italy
³ Sezione di Genova, INFN, via Dodecaneso 33, 16146, Genova, Italy

^* e-mail: mdesanctis@unal.edu.co

Received: 26 January 2016
Revised: 4 March 2016
Accepted: 7 March 2016
Published online: 5 May 2016

Abstract

The relativistic interacting quark-diquark model of baryons, recently developed, is here extended introducing in the mass operator a spin-isospin transition interaction. This refined version of the model is used to calculate the non-strange baryon spectrum. The results are compared to the present experimental data. A preliminary calculation of the magnetic moments of the proton and neutron is also presented.