Searches for lepton flavour and lepton number violation in kaon decays

2011/05/30 by Evgueni Goudzovski, Goudzovski, Evgueni
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #hep-ex

paper · pdf · doi:10.48550/arxiv.1105.5957

Talk given at Moriond EW 2011 conference (La Thuile, Italy, March 2011)

arxiv created 2011/05/30 · arxiv updated 2011/05/31

Abstract

Searches for lepton flavour and lepton number violation in kaon decays by the NA48/2 and NA62 experiments at CERN are presented. A new measurement of the helicity suppressed ratio of charged kaon leptonic decay rates RK=BR(Ke2)/BR(Kmu2) to sub-percent relative precision is discussed. An improved upper limit on the lepton number violating K+- --> pi-+mu+-mu+- decay rate is also presented.

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