νμ → ν e oscillations search in the OPERA experiment

The tracking capabilities of the OPERA detector allow to reconstruct τ-leptons and electrons. It gives a possibility to observe ν_μ → ν_τ oscillations in the appearance mode and to study ν_μ → ν_e oscillations in the ν_μ CNGS beam. Current results on ν_μ → ν_e channel in the three-flavour mixing model are presented. The same data allow to constrain the presence of additional sterile neutrino states. The analysis of the full 2008–2012 OPERA data set and work on its improvement are going on. Details of the achievements are presented.