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A new application of the Gürsey and Radicati mass formula

  • M. M. GianniniEmail author
  • E. Santopinto
  • A. Vassallo
Original Article

Abstract.

We study the spin- and flavour-dependent SU(6) violations in the baryon spectrum by means of a Gürsey-Radicati mass formula. The average energy of each SU(6) multiplet is described using the SU(6)-invariant interaction given by a hypercentral potential containing a linear and a hyper-Coulomb term. We show that the nonstrange- and strange-baryon masses are, in general, fairly well reproduced and moreover that the Gürsey-Radicati formula holds in a satisfactory way also for the excited states up to 2 GeV.

PACS.

12.39.-x Phenomenological quark models 12.39.Pn Potential models 11.30.Hv General theory of fileds and particles: Flavor symmetries 11.30.Ly General theory of fields and particles: Other internal and higher symmetries 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2005

Authors and Affiliations

  • M. M. Giannini
    • 1
    • 2
    Email author
  • E. Santopinto
    • 1
    • 2
  • A. Vassallo
    • 1
    • 2
  1. 1.Dipartimento di FisicaUniversità degli Studi di GenovaGenovaItaly
  2. 2.Sezione di GenovaINFNGenovaItaly

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