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An updated analysis of all available neutrino oscillation evidence in Solar experiments including the latest SNOES,CC and NC data (254d live time, NaCL enhanced efficiency) is presented. We obtain, for the fraction of active oscillating neutrinos: sin α = (ΦNC − ΦCC)/(ΦSSM − ΦCC) = 0.940 +0.065 −0.060 nearly 20σ from the pure sterile oscillation case. The… (More)

We analyze the anomalous magnetic moment of the muon aμ in supersymmetric scenarios. First we concentrate on scenarios with universal soft terms. We find that a moderate increase of aμ can be obtained by lowering the unification scale MGUT to intermediate values 1010−12 GeV. However, large values of tan β are still favored. Then we study the case of… (More)

The neutralino-nucleon cross section in the context of the MSSM with universal soft supersymmetry-breaking terms is compared with the limits from dark matter detectors. Our analysis is focussed on the stability of the corresponding cross sections with respect to variations of the initial scale for the running of the soft terms, finding that the smaller the… (More)

An updated analysis of all available neutrino oscillation evidence in Reactor (Kamland, first 145 days of data) and Solar experiments (SK day and night spectra, global rates from Homestake, SAGE and GALLEX) including the SNOCC and NC data is presented. In the framework of two active neutrino oscillations we determine the allowed regions in neutrino… (More)

Inspired by the atmospheric multi-GeV neutrino data, we consider a neutrino flavor mixing matrix which is maximal in the µ − τ sector, all the entries of equal magnitude. This condition is a strong restriction: the full matrix including complex phases depends essentially on one parameter. The survival probability is an universal function of L/E, independent… (More)

An updated analysis of all available neutrino oscillation evidence in Solar experiments (SK day and night spectra, global rates from Homestake, SAGE and GALLEX) including the latest SNOCC and NC data is presented. Assuming that the shape of the SNO CC energy spectrum is undistorted and using the information provided by SNO we obtain, for the fraction of… (More)

We study in detail the power of the reactor experiment kamLAND for discriminating existing solutions to the SNP and giving accurate information on neutrino masses and mixing angles. Assuming the expected signal corresponding to various “benchmark” points in the 2 dimensional (∆m2, tan2 θ) mixing plane, we develop a full-fledged χ2 analysis which include… (More)

- Bhag C. Chauhana, João Pulidoa, Emilio Torrente-Lujan
- 2003

In this work the possibility of detecting solar electron antineutrinos produced by a solar core magnetic field from the KamLAND recent observations is investigated. We find a scaling of the antineutrino probability with respect to the magnetic field profile in the sense that the same probability function can be reproduced by any profile with a suitable peak… (More)

We investigate the possibility of detecting solar antineutrinos with the KamLAND experiment. These antineutrinos are predicted by spin-flavor oscillations at a significant rate even if this mechanism is not the leading solution to the SNP. The recent evidence from SNO shows that the solar neutrino flux arriving on earth could contain a residual component… (More)

The effect of a random magnetic field in the convective zone of the Sun on resonant neutrino spin oscillations, i.e. transitions of the type ν eL → ˜ ν µR , is considered. The average survival probability and the expected experimental signals in the existing solar neutrino experiments are computed as a function of the level of the noise and magnitude of a… (More)