Lepton flavour universality test at the CERN NA62 experiment
arXiv:1008.1219 · doi:10.1016/j.nuclphysbps.2010.12.066
Abstract
A precision test of lepton universality by measurement of the ratio RK of K-->e nu to K-->mu nu decay rates was performed using a sample of 59963 K-->e nu candidates with 8.8% background contamination collected by the CERN NA62 experiment. The result RK = (2.486 +- 0.013)*10^{-5} is in agreement with the Standard Model expectation.
A talk given at the BEACH 2010 conference (Perugia, June 2010). 6 pages, 4 figures
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