The shape of the electron energy spectrum in H β-decay permits a direct assay of the absolute scale of the neutrino mass; a highly accurate theoretical description of the electron energy spectrum is necessary to the empirical task. We update Sirlin’s calculation of the outer radiative correction to nuclear β-decay to take into account the non-zero energy resolution of the electron detector. In ...

The deep-inelastic neutrino-nucleon cross section is one of the components of few GeV neutrino interactions. We present here our results for neutrino-isoscalar nucleon charged current scattering including perturbative next-to-leading order QCD corrections, target mass corrections, charm mass and lepton mass corrections.

We prove a general low-energy theorem establishing a generic relation between the neutrino Majorana mass and the superpartner sneu-trino B-L-violating " Majorana "-like mass term. The theorem states that, if one of these two quantities is non-zero the other one is also non-zero and, vice versa, if one of them vanishes the other vanishes, too. The theorem is a consequence of the underlying super...

We have obtained the neutrino mass matrix with the large mixing angle (LMA) MSW solution, sin 2θ⊙ = 0.65 ∼ 0.97 and ∆m⊙ = 10 −5 ∼ 10−4eV2, in the S3L × S3R flavor symmetry. The structure of our neutrino mass matrix is found to be stable against radiative corrections. The solar neutrino data as well as the atmospheric one give big impact on the study of the lepton mass matrices. There is a typic...

The recent real time KARMEN anomaly for the electron neutrino counting rates (obtained from stopped muon decays) is analyzed by employing a neutrino flavor rotation model in which the muon neutrino is in a superposition of only two mass eigenstates. On the basis of experimental electron neutrino counting oscillations, we find a neutrino mass splitting |m22 −m 2 1| = (0.22± 0.02)(eV/c ) and a fl...

We show how the seesaw mechanism for neutrino masses can be realized within a five dimensional (5D) warped geometry framework. Intermediate scale standard model (SM) singlet neutrino masses, needed to explain the atmospheric and solar neutrino oscillations, are shown to be proportional to MPl exp((2c − 1)πkR), where c denotes the coefficient of the 5D Dirac mass term for the singlet neutrino wh...

It is considered that observed data coming from atmospheric neutrino experiments 1 are compelling evidence of neutrino oscillation indicating the presence of neutrino mass and flavor mixing . This is now being confirmed by the ongoing K2K experiment . Results of the solar neutrino experiments 5 are also supporting such mass induced neutrino oscillations hypothesis, either through the matter enh...

I discuss the implications of neutrino oscillations for neutrino mass patterns and mass matrices, and for neutrinoless double beta decay. I then go on to discuss the implications for cosmological relic density and dark matter, the galaxy structure limits on neutrino mass, nucleosynthesis, supernovae, cosmic rays and gamma ray bursts.

These notes present a critique of the standard three–flavor neutrino oscillation framwork. The design proposal of the MINOS at Fermilab based on a two mass eigenstate framework may require serious reconsideration if there is strong mixing between all three flavors of neutrinos. For the LSND and KARMEN neutrino oscillation experiments, the amplitude of neutrino oscillation of the “one mass scale...