Neutrino physics and oscillation studies at CERN

The CERN short baseline program, designed to search for nu /sub mu / to nu /sub tau / oscillations, was carried out by two experiments using very different approaches: CHORUS, aiming at the direct observation of the tau decay in emulsion, and NOMAD, based on the indirect kinematical selection with an electronic detector. A review of the two experiments and of their tau appearance search, giving no evidence for neutrino oscillations, is presented here. The preliminary results of a search for nu /sub mu / to nu /sub e/ oscillations in the NOMAD experiment are also reported, excluding the parameter region of LSND in the range Delta m/sup 2/ > 10 eV/sup 2/. (21 refs).