Speaker
Dr.
Alexander Sadovsky
(NRC "Kurchatov Institute" - IHEP)
Description
A high statistics data sample of the $K^{+} \to \mu^{+} \nu_{\mu}$ decay was recorded in 2012 by OKA collaboration. The missing mass analysis was performed to search for a decay channel $K^{+} \to \mu^{+} \nu_{H}$ with a stable heavy neutrino in the final state. The obtained missing mass spectrum does not show peaks which could be explained by existence of stable heavy neutrinos in the mass range (220 < $m_{ν_{H}}$ < 375) MeV/$c^2$. Instead, we update upper limits on the branching ratio and on the value of the mixing element $|U_{μH}|^2$.
Primary author
Dr.
Alexander Sadovsky
(NRC "Kurchatov Institute" - IHEP)
