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2003-01-01 - Article/Dans un journal avec peer-review - Anglais - 17 page(s)

Silvestre-Brac B., Brau Fabian, Semay Claude , "Electromagnetic splitting for mesons and baryons using dressed constituent quarks" in Journal of Physics : G Nuclear & Particle Physics, 29, 2685-2701

  • Edition : Institute of Physics, Bristol (United Kingdom)
  • Codes CREF : Physique des particules élémentaires (DI1221), Physique théorique et mathématique (DI1210)
  • Unités de recherche UMONS : Physique nucléaire et subnucléaire (S824), Laboratoire Interfaces et Fluides complexes (S885)
  • Instituts UMONS : Institut de Recherche sur les Systèmes Complexes (Complexys)
Texte intégral :

Abstract(s) :

(Anglais) Electromagnetic splittings formesons and baryons are calculated in a formalism where the constituent quarks are considered as dressed quasiparticles. The electromagnetic interaction, which contains coulomb, contact and hyperfine terms, is folded with the quark electrical density. Two different types of strong potentials are considered. Numerical treatment is done very carefully and several approximations are discussed in detail. Our model contains only one free parameter and the agreement with experimental data is reasonable although it seems very difficult to obtain a perfect description in any case.

Identifiants :
  • arXiv : 0302252 [hep-ph]