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We present simple analytical approximations to matter-effect corrected effective neutrino mixing-angles and effective mass-squared-differences. The expressions clarify the dependence of oscillation probabilities in matter to the mixing…

High Energy Physics - Phenomenology · Physics 2007-05-23 Minako Honda , Yee Kao , Naotoshi Okamura , Tatsu Takeuchi

Analytic formulas are presented for three flavor neutrino oscillations in matter in the plane wave approximation. We calculate in particular the time evolution operator in both mass and flavor bases. We also find the transition…

High Energy Physics - Phenomenology · Physics 2009-10-31 Tommy Ohlsson , Hakan Snellman

We calculate matter effects on neutrino oscillations relevant for long baseline neutrino oscillation experiments. In particular, we compare the results obtained with simplifying approximations for the density profile in the Earth versus…

High Energy Physics - Phenomenology · Physics 2010-12-13 Irina Mocioiu , Robert Shrock

We consider (\nu_\mu --> \nu_e) oscillations in long baseline experiments within a three flavor framework. A non-zero measurement of this oscillation probability implies that the (13) mixing angle `phi' is non-zero. We consider the effect…

High Energy Physics - Phenomenology · Physics 2009-10-31 Mohan Narayan , S. Uma Sankar

We present a formalism for the matter effects in the Earth on low energy neutrino fluxes which is both accurate and has all advantages of a full analytic treatment. The oscillation probabilities are calculated up to second order term in…

High Energy Physics - Phenomenology · Physics 2009-11-10 A. N. Ioannisian , N. A. Kazarian , A. Yu. Smirnov , D. Wyler

We calculate matter effects on neutrino oscillations relevant for long baseline experiments. In particular, we compare the results obtained with constant density along the neutrino path versus results obtained by incorporating the actual…

High Energy Physics - Phenomenology · Physics 2009-10-31 Irina Mocioiu , Robert Shrock

Neutrino oscillations change when in media in comparison to vacuum oscillations due to the scattering of neutrinos on matter constituents, electrons particularly. This can be easily described by introducing new effective matter mixing…

High Energy Physics - Phenomenology · Physics 2018-10-02 Tomas Nosek

Abstract We study the analytic expression for four flavor neutrino oscillation in the presence of matter. We calculate the time evolution operator on flavor and mass basis. We find the matter dependent mass square difference and neutrino…

High Energy Physics - Phenomenology · Physics 2021-06-29 Vivek Kumar Nautiyal , Bipin Singh Koranga

Atmospheric neutrinos travel very long distances through earth matter. It is expected that the matter effects lead to significant changes in the neutrino survival and oscillation probabilities. Initial analysis of atmospheric neutrino data…

High Energy Physics - Phenomenology · Physics 2022-09-07 Mohammad Nizam , Jaydeep Datta , Ali Ajmi , S. Uma Sankar

The complete description of neutrino oscillations require the wave packet treatment. For terrestrial experiments the contribution from the interaction of neutrino with the Earth matter would modify oscillation pattern, i.e., the dependence…

High Energy Physics - Phenomenology · Physics 2012-06-06 Nan Qin , Bo-Qiang Ma

It is well known that when the distance $t$ traveled by neutrinos in matter is short, matter effects in oscillations of neutrino flavour are small and decrease with decreasing $t$ more rapidly than the oscillations effects themselves. We…

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

We describe the effects of neutrino propagation in the matter of the Earth relevant for experiments with atmospheric and accelerator neutrinos and aimed at the determination of the neutrino mass hierarchy and CP-violation. These include (i)…

High Energy Physics - Phenomenology · Physics 2013-06-13 Mattias Blennow , Alexei Yu. Smirnov

In this paper, we show the effects on the transition probabilities for neutrino oscillations due to a thin constant density layer perturbation added to an arbitrary matter density profile. In the case of two neutrino flavors, we calculate…

High Energy Physics - Phenomenology · Physics 2009-11-07 Tommy Ohlsson

A comprehensive formalism for the description of neutrino oscillations in the Earth in a general scheme with three massive neutrinos and the mass hierarchy m_1<<m_2<<m_3 is presented. Using this formalism, which is valid both in vacuum and…

High Energy Physics - Phenomenology · Physics 2011-07-19 C. Giunti , C. W. Kim , M. Monteno

As the increasing of neutrino energy or matter density, the neutrino oscillation in matter may undergo "vacuum-dominated", "resonance" and "matter-dominated" three different stages successively. Neutrinos endure very different matter…

High Energy Physics - Phenomenology · Physics 2020-02-26 Shu Luo

Variations around the average density and composition of the Earth mantle may affect long-baseline (anti)neutrino oscillations through matter effects. For baselines not exceeding a few thousand km, such effects are known to be very small,…

High Energy Physics - Phenomenology · Physics 2007-05-23 G. L. Fogli , G. Lettera , E. Lisi

The Kamiokande II and IMB data on contained events induced by atmospheric neutrinos exhibit too low a ratio of muons to electrons, which has been interpreted as a possible indication of neutrino oscillations. At the same time, the recent…

High Energy Physics - Phenomenology · Physics 2008-11-26 E. Akhmedov , P. Lipari , M. Lusignoli

We derive analytic expressions for three flavor neutrino oscillations in the presence of matter in the plane wave approximation using the Cayley-Hamilton formalism. Especially, we calculate the time evolution operator in both flavor and…

High Energy Physics - Phenomenology · Physics 2009-10-31 Tommy Ohlsson , Hakan Snellman

The matter effects for solar neutrino oscillations are studied in a general scheme with an arbitrary number of sterile neutrinos, without any constraint on the mixing, assuming only a realistic hierarchy of neutrino squared-mass differences…

High Energy Physics - Phenomenology · Physics 2009-12-31 C. Giunti , Y. F. Li

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
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