Zeitschrift für Physik C Particles and Fields

, Volume 58, Issue 4, pp 595–600

Two schemes ofηη′-mixing

  • A. V. Kisselev
  • V. A. Petrov


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 θp are, respectively, (−15.0±1.8)o and (−19.7±2.2)o.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

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
  3. 3.IHEPProtvinoRussia

Personalised recommendations