22–28 Jul 2010
Palais des Congrès de Paris
Europe/Paris timezone

CP measurements in K+- ->pi l- l+ and KS->pi pi e e decays at NA48

Not scheduled
Palais des Congrès de Paris

Palais des Congrès de Paris

2 place de la Porte Maillot Paris 17
Poster 06 - CP violation, CKM and Rare Decays

Speaker

Andreas Winhart (Institut fur Physik)

Description

We report on the measurements of the branching ratios and form factors for the rare decays K+- -> pi+- l+ l- done with the full NA48/2 data set. Our results improve the existing world averages significantly and the CP violating asymmetry between K+ and K- in this channel results to be less than a few percent. In addition, the branching ration of the decay KS --> pi pi e e has been measured, and the result is used to set an upper limit on the presence of E1 direct emission in the decay amplitude. The CP-violating asymmetry has been also measured.

Primary author

Presentation materials