Search for neutral heavy leptons in a high-energy neutrino beam
Physical Review Letters 83:24 (1999) 4943-4946
Authors:
A Vaitaitis, RB Drucker, J Formaggio, S Koutsoliotas, T Adams, A Alton, S Avvakumov, L De Barbaro, P De Barbaro, RH Bernstein, A Bodek, T Bolton, J Brau, D Buchholz, H Budd, L Bugel, J Conrad, BT Fleming, R Frey, J Goldman, M Goncharov, DA Harris, RA Johnson, JH Kim, MJ Lamm, W Marsh, D Mason, KS Mc Farland, C Mc Nulty, J Monroe, D Naples, P Nienaber, A Romosan, WK Sakumoto, H Schellman, MH Shaevitz, P Spentzouris, EG Stern, M Vakili, V Wu, UK Yang, J Yu, GP Zeller, ED Zimmerman
Abstract:
A search for neutral heavy leptons (NHLs) has been performed using an instrumented decay channel at the NuTeV (E-815) experiment at Fermilab. The data were examined for NHLs decaying into muonic final states (μμν, μeν, μπ, and μρ); no evidence has been found for NHLs in the 0.25-2.0 GeV mass range. This analysis places limits on the mixing of NHLs with standard light neutrinos at a level up to an order of magnitude more restrictive than previous search limits in this mass range. 1999 © The American Physical Society.
