The evidences for neutrino oscillations are found in atmospheric and solar neutrinos. The strongest evidence for atmospheric neutrino oscillations is given by zenith-angular dependence of muon neutrino flux. In case of solar neutrinos the evidence is weaker. All five solar-neutrino experiments show the deficit of the flux by a factor 2-3 as compared with the Standard Solar Model prediction. The latter is strongly confirmed by helioseismic measurements. Thus, solar neutrino measurements have a status of disappearance oscillation experiment. The atmospheric and solar neutrinos will be reviewed in the light of recent SuperKamiokande data. The consequences for other astrophysical phenomena will be discussed.
19th Texas Symposium on Relativistic Astrophysics and Cosmology
- Pub Date:
- December 1998