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The European Physical Journal A

, Volume 31, Issue 4, pp 613–615 | Cite as

Electromagnetic properties of strange baryons in a relativistic quark model

  • T. Van CauterenEmail author
  • J. Ryckebusch
  • B. Metsch
  • H. -R. Petry
QNP 2006

Abstract.

We present some of our results for the electromagnetic properties of excited Σ hyperons, computed within the framework of the Bonn constituent-quark model, which is based on the Bethe-Salpeter approach. The seven parameters entering the model are fitted against the best-known baryon masses. Accordingly, the results for the form factors and helicity amplitudes are genuine predictions. We compare with the scarce experimental data available and discuss the processes in which Σ *'s may play an important role.

PACS.

11.10.St Bound and unstable states; Bethe-Salpeter equations 12.39.Ki Relativistic quark model 13.40.Gp Electromagnetic form factors 14.20.Jn Hyperons 

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Copyright information

© Società Italiana di Fisica and Springer-Verlag 2007

Authors and Affiliations

  • T. Van Cauteren
    • 1
    Email author
  • J. Ryckebusch
    • 1
  • B. Metsch
    • 2
  • H. -R. Petry
    • 2
  1. 1.Department of Subatomic and Radiation PhysicsGhent UniversityGentBelgium
  2. 2.HISKPBonn UniversityBonnGermany

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