Atmospheric neutrinos, νe-νs oscillations and a novel neutrino evolution equation

被引：2

作者：

Akhmedov, Evgeny ^{[1
,2
]}

机构：

[1] Max Planck Inst Kernphys, Saupfercheckweg 1, D-69117 Heidelberg, Germany

[2] NRC Kurchatov Inst, Moscow, Russia

来源：

JOURNAL OF HIGH ENERGY PHYSICS | 2016年 / 08期

关键词：

Neutrino Physics; Solar and Atmospheric Neutrinos; 4-NEUTRINO OSCILLATIONS; PARAMETRIC RESONANCE; CURRENT EVENTS; SOLAR; ASYMMETRY; FLUX;

D O I：

10.1007/JHEP08(2016)153

中图分类号：

O412 [相对论、场论]; O572.2 [粒子物理学];

学科分类号：

摘要：

If a sterile neutrino nu(s) with an eV-scale mass and a sizeable mixing to the electron neutrino exists, as indicated by the reactor and gallium neutrino anomalies, a strong resonance enhancement of nu(e)-nu(s) oscillations of atmospheric neutrinos should occur in the TeV energy range. At these energies neutrino flavour transitions in the 3+1 scheme depend on just one neutrino mass squared difference and are fully described within a 3-flavour oscillation framework. We demonstrate that the flavour transitions of atmospheric nu(e) can actually be very accurately described in a 2-flavour framework, with neutrino flavour evolution governed by an inhomogeneous Schrodinger-like equation. Evolution equations of this type have not been previously considered in the theory of neutrino oscillations.

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