UPWARD-GOING MUONS AND NEUTRINO OSCILLATIONS

The available upward-going muon data from the Kamiokande, Baksan, MACR O, IMB, and SuperKamiokande experiments are reviewed and combined. Bou nds on the neutrino mass and mixing parameters are derived for oscilla tions in two and three flavors. These bounds are not in significant co nflict with the oscillation solution to the atmospheric neutrino flavo r anomaly observed in the sub-GeV and multi-GeV energy range. The comb ination of all the available atmospheric data tends to favor the nu(mu )<->nu(e) channel with respect to the nu(mu)<->nu(tau) channel, and to disfavor the threefold maximal mixing scenario.