22-28 July 2010
Palais des Congrès de Paris
Europe/Paris timezone

Measurement of BR(K -> e nu)/BR(K -> mu nu) at NA62

23 Jul 2010, 09:15
Salle 242A ()

Salle 242A

Parallel Session Talk 06 - CP violation, CKM and Rare Decays 06 - CP violation, CKM and Rare Decays


Andreas Winhart (Institut fur Physik)


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 the Standard Model (SM) description of weak interactions. It was realised 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 10^5 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 will be discussed.

Primary author

Cristina Lazzeroni (High Energy Physics Group, University of Birmingham)

Presentation Materials