Abstract
Evidence of a heavy neutrino, , in the decays was sought using the E949 experimental data with an exposure of stopped kaons. With the major background from the radiative decay understood and suppressed, upper limits (90% C.L.) on the neutrino mixing matrix element between the muon and heavy neutrinos, , were set at the level of to for the heavy neutrino mass region 175 to .
6 More- Received 14 November 2014
- Corrected 6 March 2015
DOI:https://doi.org/10.1103/PhysRevD.91.052001
© 2015 American Physical Society
Corrections
6 March 2015