Search for heavy neutral lepton production at the NA62 experiment
March 18, 2022
May 12, 2022
Searches for heavy neutral lepton production in \(K^+ \to e^+ N\) and \(K^+ \to \mu^+ N\) decays using the data set collected by the NA62 experiment at CERN in 2016-18 are presented. Upper limits on the elements of the extended neutrino mixing matrix and are established at the levels of and , respectively, improving on the earlier searches for heavy neutral lepton production and decays in the kinematically accessible mass range. Searches for the \(K^+ \to \mu^+ \nu \nu \bar \nu \) and \(K^+ \to \mu^+ \nu X\) decays, where \(X\) is an new light invisible particle, are also reported.
How to cite
Metadata are provided both in "article" format (very similar to INSPIRE) as this helps creating
very compact bibliographies which can be beneficial to authors and
readers, and in "proceeding" format
which is more detailed and complete.