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We present a generalization of the resonant neutrino conversion in matter, including a random component in the matter density profile. The study is focused on the effect of such matter perturbations upon both large and small mixing angle…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Rossi

We present a generalization of the resonant neutrino conversion in matter, including a random component in the matter density profile. The study is focused on the effect of such matter perturbations upon both large and small mixing angle…

High Energy Physics - Phenomenology · Physics 2007-05-23 H. Nunokawa , A. Rossi , V. B. Semikoz , J. W. F. Valle

We present the evolution equation describing MSW conversion, derived in the framework of the Schr\"odinger approach, in the presence of matter density fluctuations. Then we analyse the effect of such fluctuations in the MSW scenario as a…

High Energy Physics - Phenomenology · Physics 2009-10-28 Anna Rossi

We study the effect of random matter density fluctuations in the sun on resonant neutrino conversion in matter by solving numerically the evolution equation for the neutrino system including the full effect of the random matter density…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. A. Bykov , M. C. Gonzalez-Garcia , C. Peña-Garay , V. Yu. Popov , V. B. Semikoz

We investigate the effects of random density fluctuations on neutrino oscillations in the Sun environment. We show how the average of certain quantities which can be used to describe the MSW effect can be computed analytically. We examine…

High Energy Physics - Phenomenology · Physics 2016-09-01 Emilio Torrente-Lujan

Large mixing MSW solutions to the solar neutrino problem appear to be currently favored by the data. We discuss the possibility of discriminating them by means of present and future experiments. In particular, we show that the study of…

High Energy Physics - Phenomenology · Physics 2009-11-07 Antonio Palazzo

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…

High Energy Physics - Phenomenology · Physics 2009-09-25 G. K. Leontaris , J. D. Vergados

We consider the effect on matter-enhanced neutrino flavor transformation of a randomly fluctuating, delta-correlated matter density. The fluctuations will produce a distribution of neutrino survival probabilities. We find the mean and…

Astrophysics · Physics 2008-11-26 A. B. Balantekin , J. M. Fetter , F. N. Loreti

We consider flavor changing effective neutrino interactions in the context of massive neutrinos in the issue of atmospheric neutrinos. Assuming as usual that this is an indication of the oscillation of muon neutrinos into tau neutrinos we…

High Energy Physics - Phenomenology · Physics 2007-05-23 J. C. Montero , V. Pleitez

The MSW (Mikheyev-Smirnov-Wolfenstein) effect is the adiabatic or partially adiabatic neutrino flavor conversion in medium with varying density. The main notions related to the effect, its dynamics and physical picture are reviewed. The…

High Energy Physics - Phenomenology · Physics 2009-11-10 A. Yu. Smirnov

We present an exact analytic solution to the neutrino evolution equation in matter with periodic step-function density profile and discuss in detail the parametric resonance of neutrino oscillations that can occur in such a system. Solar…

High Energy Physics - Phenomenology · Physics 2008-11-26 E. Kh. Akhmedov

The large mixing angle (LMA) MSW solution to the solar neutrino problem seems favored by the data at the moment over the small mixing angle (SMA) MSW solution and the vacuum (VAC) solution. In this paper the various main types of models of…

High Energy Physics - Phenomenology · Physics 2011-05-12 Ilja Dorsner , S. M. Barr

The MSW (Mikheyev-Smirnov-Wolfenstein) effect is the effect of transformation of one neutrino species (flavor) into another one in a medium with varying density. Three basic elements of the effect include: the refraction of neutrinos in…

High Energy Physics - Phenomenology · Physics 2007-05-23 A. Yu. Smirnov

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 electron neutrino to muon (tau) neutrino transition solution of the solar neutrino…

High Energy Physics - Phenomenology · Physics 2009-10-31 S. T. Petcov

We study the matter effects for solar neutrino oscillations in a general scheme, without any constraint on the number of sterile neutrinos and the mixing matrix elements, only assuming a realistic hierarchy of neutrino squared-mass…

High Energy Physics - Phenomenology · Physics 2010-05-07 Carlo Giunti , Yu-Feng Li

Assuming three flavour neutrino mixing takes place in vacuum, we investigate the possibility that the solar $\nu_e$ take part in MSW transitions in the Sun due to $\Delta m^2_{31} \sim (10^{-7} - 10^{-4})~eV^2$, followed by long wave length…

High Energy Physics - Phenomenology · Physics 2007-05-23 Qiu-Yu Liu

We present a systematic analysis of the three-flavor Mikheyev-Smirnov-Wolfenstein (MSW) oscillation solutions to the solar neutrino problem, in the hypothesis that the two independent neutrino square mass differences, $\delta m^2$ and…

High Energy Physics - Phenomenology · Physics 2009-10-07 G. L. Fogli , E. Lisi , D. Montanino

The solar neutrino problem is reviewed and the possible vacuum oscillation and MSW solutions of the problem are considered.

High Energy Physics - Phenomenology · Physics 2009-10-31 S. T. Petcov

We describe how to consistently incorporate solar model uncertainties, along with experimental errors and correlations, when analyzing solar neutrino data to derive confidence limits on parameter space for proposed solutions of the solar…

High Energy Physics - Phenomenology · Physics 2008-11-26 Evalyn Gates , Lawrence M. Krauss , Martin White

Solar model independent tests of the vacuum oscillation and MSW solutions of the solar neutrino problem are considered. Detailed predictions for time (seasonal) variations of the signals in the future solar neutrino detectors (SNO, Super…

High Energy Physics - Phenomenology · Physics 2009-09-25 P. I. Krastev , S. T. Petcov
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