International Journal of
Physical Sciences

  • Abbreviation: Int. J. Phys. Sci.
  • Language: English
  • ISSN: 1992-1950
  • DOI: 10.5897/IJPS
  • Start Year: 2006
  • Published Articles: 2557

Full Length Research Paper

A relativistic model for the light baryon masses in hypercentral potential and spin-flavor dependence

Nasrin Salehi1* and Ali Akbar Rajabi2
  1Department of Basic Sciences, Shahrood Branch, Islamic Azad University, Shahrood, Iran. 2Department of Physics, Shahrood University of Technology, Shahrood, Iran.
Email: [email protected]

  •  Accepted: 02 April 2012
  •  Published: 30 April 2012



In this paper, we studied the light baryon resonances spectrum within a relativistically quark model based on Dirac equation and generalized Gürsey Radicati mass formula (GR). For exact solving of the Dirac equation for our proposed hypercentral confining potential analytically, we used the Ansatz approach. The results of our model show that the light baryons spectrums are fairly well reproduced, thanks to the flavor-dependent interaction. The overall good description of the spectrums which we obtain shows that our model can also be used to give a fair description of the energies of the negative-parity resonance and excited multiplets, at least up to 3 GeV. Eventually, we compare the results obtained from our model with the corresponding results of the Schrödinger equation for the Coulombic-like term plus a linear confining term and we found out that our model has certainly improved the results of the non-relativistic model.


Key words: Mass spectra, baryon resonances, relativistic model, SU(6) symmetry violating, hypercentral confining potential.