SU(3) and nonet breaking effects in K L → γγ induced by s → d + 2 gluons due to an anomaly
Journal
Physical Review D
Journal Volume
67
Journal Issue
9
Date Issued
2003
Author(s)
Abstract
In this paper we study the effects of s → d + 2 gluon on KL → γγ in the standard model. We find that this interaction can induce new sizable SU(3) and U(3) nonet breaking effects in KL-η, η′ transitions and therefore in KL → γγ due to large matrix elements of 〈η(η′) |αsGμνaG̃a μν|0〉 from the QCD anomaly. These new effects play an important role in explaining the observed value. We also study the effects of this interaction on the contribution to ΔmKL - KS. ©2003 The American Physical Society.
Type
journal article