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CHIRAL LOOPS IN PI-0,ETA-0-]GAMMA-GAMMA AND ETA-ETA' MIXING
PHYSICAL REVIEW LETTERS
  • JF Donoghue, University of Massachusetts Amherst
  • BR Holstein, University of Massachusetts - Amherst
  • YCR LIN
Publication Date
1985
Abstract
We compute the one-loop corrections to the Wess-Zumino Lagrangean governing π0, η8→γγ. The SU(3) relation between the two decay rates receives modifications of order mK2lnmK2, as does the Gell-Mann-Okubo mass formula. A consistent picture of η-η′ mixing emerges from both the two-photon widths and the mass matrix, however with a mixing angle θ≈-20° instead of the usual θ≈-10°.
Disciplines
Comments
Published version is located at http://prl.aps.org/abstract/PRL/v55/i25/p2766_1
Pages
2766-2769
Citation Information
JF Donoghue, BR Holstein and YCR LIN. "CHIRAL LOOPS IN PI-0,ETA-0-]GAMMA-GAMMA AND ETA-ETA' MIXING" PHYSICAL REVIEW LETTERS Vol. 55 Iss. 25 (1985)
Available at: http://works.bepress.com/barry_holstein/158/