Limits on muon-neutrino to tau-neutrino oscillations induced by a sterile neutrino state obtained by OPERA at the CNGS beam


Agafonova N., Aleksandrov A., Anokhina A., Aoki S., Ariga A., Ariga T., ...More

JOURNAL OF HIGH ENERGY PHYSICS, no.6, 2015 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: Issue: 6
  • Publication Date: 2015
  • Doi Number: 10.1007/jhep06(2015)069
  • Journal Name: JOURNAL OF HIGH ENERGY PHYSICS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Middle East Technical University Affiliated: Yes

Abstract

The OPERA experiment, exposed to the CERN to Gran Sasso nu(mu) beam, collected data from 2008 to 2012. Four oscillated nu(tau) Charged Current interaction candidates have been detected in appearance mode, which are consistent with nu(mu) -> nu(tau) oscillations at the atmospheric Delta m(2) within the "standard" three-neutrino framework. In this paper, the OPERA nu(tau) appearance results are used to derive limits on the mixing parameters of a massive sterile neutrino.