This talk reviews three inputs important to neutrino-induced nu-cleosynthesis in a supernova: 1) " standard " properties of the super-nova neutrino flux, 2) effects of phenomena like neutrino oscillations on that flux, and 3) nuclear structure issues in estimating cross sections for neutrino-nucleus interactions. The resulting possibilities for neutrino-induced nucleosynthesis – or the ν-proces...

We analyze all available solar and related reactor neutrino experiments, as well as simulated future Be, p − p, pep, and B solar neutrino experiments. We treat all solar neutrino fluxes as free parameters subject to the condition that the total luminosity represented by the neutrinos equals the observed solar luminosity (the ‘luminosity constraint’). Existing experiments show that the p−p solar...

Recent results from the Super-Kamiokande experiment [1] have confirmed, with high statistics, the reality of the solar [2] and atmospheric [3] neutrino anomalies. In the case of the atmospheric neutrino anomaly, the SuperKamiokande data can be interpreted as providing evidence that the anomaly is due to neutrino flavor mixing [4], and “long baseline” accelerator and reactor neutrino experiments...

Basics of neutrino oscillations is discussed. Importance of time-energy uncertainty relation is stressed. Neutrino oscillations in the leading approximation and evidence for neutrino oscillations are briefly summarized.

The atmospheric neutrino anomaly reported by the super-Kamiokande collaboration suggests existence of a large flavour violating Yukawa coupling in the lepton sector. We discuss lepton-flavour violation at low energies in the framework of the supersymmetric SU(5)GUT model with right-handed neutrinos. We find that for a wide range of parameter space suggested from the atmospheric neutrino anomaly...

Well proved by a number of experiments carried out during the last ten years, the existence of neutrino oscillations has stimulated renewed interest in the study of neutrino properties. Neutrino oscillation results have shown that neutrinos mix and have finite masses; they have thus provided us with the first clear evidence of phenomena beyond the reach of Standard Model (SM). Unlike quark mixi...

Extending the minimal standard model of particle interactions (without righthanded singlet neutrinos) to include a heavy scalar triplet ξ to obtain nonzero Majorana neutrino masses, I derive the following simple realistic connection between atmospheric and solar neutrino vacuum oscillations: (∆m)sol(∆m)atm/mν (sin 2 2θ)atm = 2I2, where mν is the assumed common approximate mass of each neutrino ...

A new more rigorous and accurate method for treating neutrino oscillations in the context of the MSW effect in a medium is proposed. This leads to a new type of resonance condition which for small mixing angles puts rather stringent conditions on Eν/δm . The implications on the solar neutrino problem are discussed. IOA-304/94 April 1994 One of the most important questions of the physics beyond ...

Current data from the atmospheric and solar neutrino experiments are beautifully explained by oscillations among three active neutrino species . Another data in favor of neutrino oscillation has been obtained in the LSND experiment . Reconciliation of these experimental results requires three distinct mass-squared differences, implying the existence of a sterile neutrino νs. In the four-neutrin...

We propose a model for neutrino mass generation in wich no physics beyond a TeV is required. We extend the standard model by adding two charged singlet fields with lepton number two. Dirac neutrino masses mνD ≤ MeV are generated at the one loop level. Small left handed majorana neutrino masses can be generated via the seesaw mechanism with right handed neutrino masses MR are of order TeV scale....