New results on kaon decays from NA48/2

Abstract

Recent results from the NA48/2 experiment are presented. The $\pi \pi$ scattering lengths $a_0^0$ and $a_0^2$ have been extracted from the cusp in the $M_{00}^2$ distribution of $K^{\pm }\to {\pi }^{\pm }{\pi }^0{\pi }^0$ decays and from the $K^{\pm }\to {\pi }^{+}{\pi }^{-}{e}^{\pm }\nu$ phase shift $\delta$. Branching ratios and form factors have been measured for {$K^{\pm }\to {\pi }^{\pm }\gamma \gamma$}, {$K^{\pm }\to {\pi }^{\pm }\gamma e^{+}{e}^{-}$} and {$K^{\pm }\to {\pi }^{\pm }{e}^{+}{e}^{-}$} decays and are also summarized here.

Proceedings from Moriond QCD 2008 conference. 4 pages, 1 photo and 6 figures. More references included

References in corpus (3)

• Theoretical progress on cusp effect and Kl4 decays
• Theoretical progress on pi pi scattering lengths and phases
• New results from the NA48/2 experiment at CERN SPS: radiative nonleptonic kaon decays

Cited by in corpus (1)

• Theoretical Perspectives: XLIII Rencontres de Moriond - QCD