$K^+ \ra π^+ π^0 γ$ in the Standard Model and Beyond

Abstract

In this note we show how improved theoretical analysis combined with recent experimental data coming from NA48/2 concerning $K^{+}\to {\pi }^{+}{\pi }^0\gamma$ decay shed light on the dynamics of the $s\to d\gamma$ transition. Consequences on NP analysis are also presented.

Proceedings contribution to the 47th Rencontres de Moriond Electroweak session 2012