Speaker
Riccardo Fantecchi
(CERN)
Description
Measurement of the helicity suppressed ratio of charged kaon leptonic decay
rates BR(K --> e nu)/BR(K --> mu nu) has long been considered as an excellent test
of lepton universality and of the Standard Model (SM) description of weak
interactions. It was pointed recently that the suppression of the SM contribution
might enhance the sensitivity to SUSY-induced effects to an experimentally
accessible level. The NA62 experiment at the CERN SPS has collected a record
number of over 105 K --> e nu decays during a dedicated run in 2007, aiming at
achieving 0.5% precision. Experimental strategy, details of the analysis and
preliminary results are discussed.
Primary author
Riccardo Fantecchi
(CERN)
