Title

CHIRAL LOOPS IN PI-0,ETA-0-]GAMMA-GAMMA AND ETA-ETA' MIXING

Publication Date

1985

Journal or Book Title

PHYSICAL REVIEW LETTERS

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°.

Comments

Published version is located at http://prl.aps.org/abstract/PRL/v55/i25/p2766_1

Volume

55

Pages

2766-2769

Issue

25

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