The B solar neutrino flux that has recently been measured by SuperKamiokande is consistent with the Ar production rate in Cl at Homestake. The gallium solar neutrino experiments, GALLEX and SAGE, continue to observe Ge production rates in Ga that are consistent with the minimal signal expected from the solar luminosity. The observed B solar neutrino flux is in good agreement with that predicted...

In this paper I discuss the prospects to observe a CP-odd phase in the leptonic sector, using the intense, pure two-flavour neutrino beams produced in a future neutrino facility, the so-called neutrino factory. The organization is as follows. Section 2 summarizes the state-of-the-art concerning neutrino oscillations. Section 3 describes the neutrino factory. The prospects to measure a CP-odd ph...

The Sudbury Neutrino Observatory (SNO) has recently completed an analysis of data from the salt phase of the experiment, in which NaCl was added to the heavy-water neutrino target to enhance sensitivity to solar neutrinos. Results from the 391-day salt data set are summarized, including the measured solar neutrino fluxes, the electron energy spectrum from charged current interactions, and the d...

We have seen substantial amount of experimental evidences from solar and atmospheric neutrino experiments that neutrinos in fact have masses. Among the experiments, SuperKamiokande 2 provided the strongest evidence for the atmospheric neutrino deficit, especially the impressive zenith angle distribution. The neutrino oscillation of νμ → ντ provides the best explanation for the atmospheric neutr...

The precise knowledge of the atmospheric neutrino fluxes is a key ingredient in the interpretation of the results from any atmospheric neutrino experiment. In the standard atmospheric neutrino data analysis, these fluxes are theoretical inputs obtained from sophisticated numerical calculations. In this work we present an alternative approach to the determination of the atmospheric neutrino flux...

The tau neutrino is a neutral third generation lepton contained within the Standard Model Family Several experiments have been studying the properties of the tau neutrino nevertheless it has yet to be directly observed Several di erent methods that can allow one to study the mass of the tau neutrino are presented in this review The measurements of the lifetime and magnetic moment of the tau neu...

Massless neutrinos will mix if their couplings to gravity are flavor dependent, i.e., violate the principle of equivalence. Because the gravitational interaction grows with neutrino energy, the solar neutrino problem and the recent atmospheric neutrino data may be simultaneously explained by violations at the level of 10 to 10 or smaller. This possibility is severely constrained by present acce...

We consider the supersymmetric seesaw mechanism induced by the exchange of heavy SU(2)W triplet states, rather than ‘right-handed’ neutrino singlets, to generate neutrino masses. We show that in this scenario the neutrino flavour structure tested at low-energy in the atmospheric and solar neutrino experiments is directly inherited from the neutrino Yukawa couplings to the triplets. This allows ...

After the recent evidence of neutrino oscillations which imply the existence of neutrino masses and mixing, one of the most compelling questions in neutrino physics concerns the determination of the absolute values of neutrino masses. Various experimental strategies are and will be employed to answer this question. Here, I will review the non-oscillation techniques for neutrino mass determinati...

A simple ansatz is proposed for neutrino and charged lepton mass matrices, within the framework of universal strength for Yukawa couplings. In this framework all Yukawa couplings have equal moduli and the flavour dependence is only in their phases. We take into account the solar neutrino deficit and the atmospheric neutrino anomaly, assuming three neutrino families only. The ansatz leads in a n...