Ereditato, A.(Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics (LHEP), University of Bern, CH-3012, Bern, Switzerland)
Fini, R.(INFN Sezione di Bari, I-70126, Bari, Italy)
Vuilleumier, J.(Albert Einstein Center for Fundamental Physics, Laboratory for High Energy Physics (LHEP), University of Bern, CH-3012, Bern, Switzerland)
Wilquet, G.(IIHE, Université Libre de Bruxelles, B-1050, Brussels, Belgium)
The OPERA experiment, exposed to the CERN to Gran Sasso ν μ beam, collected data from 2008 to 2012. Four oscillated ν τ Charged Current interaction candidates have been detected in appearance mode, which are consistent with ν μ → ν τ oscillations at the atmospheric Δ m 2 within the “standard” three-neutrino framework. In this paper, the OPERA ν τ appearance results are used to derive limits on the mixing parameters of a massive sterile neutrino