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Hyperfine Interactions

, Volume 213, Issue 1–3, pp 71–79 | Cite as

Strangeness production in \(p \bar{p}\) collision

  • Pablo Garcia Ortega
  • David Rodriguez Entem
  • Francisco Fernández González
Article

Abstract

We study strangeness production reactions in the framework of a Chiral Constituent Quark Model. The model includes the coupling with the SU(3) pseudoscalar meson octet due to the spontaneous chiral symmetry breaking. It also includes QCD perturbative effects through the coupling with the gluon field. In this way the two traditional mechanism of strangeness production, i.e., the kaon exchange and gluon annihilation, are introduce in the same framework. Two meson exchanges are parametrized through the exchange of scalar mesons, namely a sigma and a kappa exchange. The kappa exchange allows a better description of the polarization observables of the \(p\bar p \to \Lambda \bar \Lambda\) production reaction. Other strangeness production reaction in the isospin 1 sector are also studied.

Keywords

Non-relativistic quark model Strangeness production Hyperons 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Pablo Garcia Ortega
    • 1
  • David Rodriguez Entem
    • 1
  • Francisco Fernández González
    • 1
  1. 1.Grupo de Física Nuclear and IUFFyMUniversidad de SalamancaSalamancaSpain

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