Measurement of the FCNC decays K+- --> pi+- l+ l- by the NA48/2 experiment at CERN

الأصل · EN

A sample of 7253 K±→π± e+e- decay candidates with 1.0% background contamination has been collected by the NA48/2 experiment at the CERN SPS, which allowed a precise measurement of the form factor, the branching ratio, and the CP violating asymmetry of K+ and K- decay widths was investigated. The results of the K±→π± e+e- analysis, as well as the status of the K±→π±μ+μ- analysis based in the same data set, are reported.