Lepton universality test with Kl2 decays at NA62 experiment

2010/06/07 by Spasimir Balev, Balev, Spasimir
Medicine · Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Medical Imaging Techniques and Applications #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.48550/arxiv.1006.1201

Lake Louise Winter Institute 2010 proceedings

arxiv created 2010/06/07 · openalex publication_date 2010/06/07 · arxiv updated 2010/06/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

The experiment NA62 at CERN collected a large sample of K+- leptonic decays in order to perform precise test of lepton universality, by measuring the helicity suppressed ratio R_K=Gamma(K+- --> e+- nu)/Gamma(K+- --> mu+- nu). The preliminary result of the analysis based on 51089 K+ --> e+nu candidates is R_K=(2.500+-0.016)x10^-5, consistent with the predictions of the Standard Model.

Related

• A Lepton Universality Test at CERN NA62 Experiment
• Kaon programme at CERN: recent results
• Precision Measurement of the Ratio of the Charged Kaon Leptonic Decay Rates
• Searches for lepton flavour and lepton number violation in K⁺ decays at NA62
• Search for New Physics in NA62