Zeitschrift für Physik C Particles and Fields

, Volume 58, Issue 4, pp 595–600 | Cite as

Two schemes ofηη′-mixing

  • A. V. Kisselev
  • V. A. Petrov
Article

Abstract

Proceeding from the expansion of composite operators in interpolating hadronic fields, the width of the decays η(η′)→γγ andJ/ψ→η(η′)γ have been calculated. Two mechanisms of pseudoscalar field mixing (“mass-mixing” and “current-mixing”) are considered. In the given schemes, the values of η−η′-mixing angle θ p are, respectively, (−15.0±1.8)o and (−19.7±2.2)o.

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Copyright information

© Springer-Verlag 1993

Authors and Affiliations

  • A. V. Kisselev
    • 1
  • V. A. Petrov
    • 2
  1. 1.International Centre for Theoretical PhysicsTriesteItaly
  2. 2.CERNGeneva 23Switzerland

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