Serguey T. Petcov

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It is shown that the strong enhancement of the Earth (day-night) effect for solar neutrinos crossing the Earth core in the case of the small mixing angle MSW ν e → ν µ(τ) transition solution of the solar neutrino problem is due to a new resonance effect in the solar neutrino transitions in the Earth and not just to the MSW effect in the core. The effect is(More)
In the context of the minimal supersymmetric extension of the Standard Model with the right-handed Majorana neutrinos, we study lepton flavor violating processes including full renormalization group running effects. We systematically compare our results with the commonly used leading logarithmic approximation, resorting to a " best fit " approach to fix all(More)
After a brief overview of the present knowledge of neutrino masses and mixing, we summarize what can be learned about physics beyond the standard model from the various proposed neu-trino experiments. We also comment on the impact of the experiments on our understanding of the origin of the matter–antimatter asymmetry of the Universe as well as what can be(More)
In the context of three-neutrino oscillations, we study the possibility of using antineutrinos from nuclear reactors to explore the 10 −4 eV 2 < ∆m 2 ⊙ ∼ < 8 × 10 −4 eV 2 region of the LMA MSW solution of the solar neutrino problem. The KamLAND experiment is not expected to determine ∆m 2 ⊙ if the latter happens to lie in the indicated region. By analysing(More)
We consider the MSSM with seesaw mechanism of neutrino mass generation and soft SUSY breaking with flavour-universal boundary conditions at the GUT scale, in which the lepton flavour violating (LFV) decays µ → e + γ, τ → µ + γ, etc., are predicted with rates that can be within the reach of present and planned experiments. These predictions depend critically(More)
Assuming three-neutrino mixing and massive Majorana neutrinos, we study the implications of the neutrino oscillation solutions of the solar and atmospheric neutrino problems and of the results of the CHOOZ experiment for the predictions of the effective Majorana mass in neutrinoless double beta ((ββ) 0ν-)decay, |< m >|. The general case of(More)
Assuming three-neutrino mixing, we study the capabilities of very long baseline neutrino oscillation experiments to verify and test the MSW effect and to measure the lepton mixing angle θ 13. We suppose that intense neutrino and antineutrino beams will become available in so–called neutrino factories. We find that the most promising and statistically(More)
The characteristic features of the neutrino oscillation length resonance, taking place in the ν 2 → ν e and ν µ → ν e (ν e → ν µ(τ)) transitions in the Earth of the solar and atmospheric neutrinos crossing the Earth core, are reviewed. The resonance enhances dramatically these transitions at small mixing angles but differs from the MSW one. It can be(More)