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Recently there has been a renewed activity in the physics of violations of Lorentz invariance in the neutrino sector. Flavor dependent Lorentz violation, which generically changes the pattern of neutrino oscillations, is extremely tightly…

High Energy Physics - Phenomenology · Physics 2013-04-05 Luca Maccione , Stefano Liberati , David M. Mattingly

In very dense environments, neutrinos can undergo fast flavor conversions on scales as short as a few centimeters provided that the angular distribution of the neutrino lepton number crosses zero. This work presents the first attempt to…

High Energy Astrophysical Phenomena · Physics 2021-05-05 Francesco Capozzi , Sajad Abbar , Robert Bollig , H. -Thomas Janka

We all know that in the dense anisotropic interior of the star, neutrino-neutrino forward-scattering can lead to fast collective neutrino oscillations, which has striking consequences on flavor dependent neutrino emission and can be crucial…

High Energy Physics - Phenomenology · Physics 2021-01-06 Soumya Bhattacharyya

We reexamine the constraints on mixing between electron and muon or tau neutrinos from shock-reheating and r-process nucleosynthesis in supernovae. To this end neutrino flavor evolution is described by nonlinear equations following from a…

Astrophysics · Physics 2009-10-22 G. Sigl

A revolution in our understanding of the neutrino sector is underway, driven by observations that are interpreted in terms of changes in neutrino flavors as they propagate. Since neutrino oscillations occur only if neutrinos are massive,…

High Energy Physics - Phenomenology · Physics 2007-05-23 V. Barger , K. Whisnant

The impact of heavy mediators on neutrino oscillations is typically described by non-standard four-fermion interactions (NSIs) or non-unitarity (NU). We focus on leptonic dimension-six effective operators which do not produce charged lepton…

High Energy Physics - Phenomenology · Physics 2012-07-13 Davide Meloni , Tommy Ohlsson , Walter Winter , He Zhang

As was shown previously, oscillations of massless neutrinos may be due to the splitting of multiply degenerate Fermi points. In this Letter, we give the details and propose a three-flavor model of Fermi point splittings and neutrino mixings…

High Energy Physics - Phenomenology · Physics 2009-11-10 F. R. Klinkhamer

MiniBooNE is expected to soon report analysis of their closed data set, and we here consider what effect direct non-standard neutrino interactions would have on their observations. Current direct limits on non-standard interactions make…

High Energy Physics - Phenomenology · Physics 2007-05-23 Loretta M. Johnson , R. Seton Williams , Laura F. Spencer , Burton J. DeWilde

We evaluate the size of a coupling for a lepton flavor violating interaction with neutrinos (nLFV) in the minimal supersymmetric standard model with right-handed neutrinos (MSSMRN). It is expected that the nLFV interactions are detected in…

High Energy Physics - Phenomenology · Physics 2009-11-10 Toshihiko Ota , Joe Sato

Usually, neutrino oscillation experiments are analyzed within the two-flavor framework which is governed by 1 mass-squared difference and 1 mixing angle. But there are 6 parameters,2 mass-squared differences, 3 mixing angles, and 1 CP phase…

High Energy Physics - Phenomenology · Physics 2009-11-10 Naotoshi Okamura

We investigate the sensitivities of future neutrino oscillation experiments for measuring the neutrino mass squared differences and leptonic mixing angles independently with neutrinos and anti-neutrinos. We update the expected sensitivities…

High Energy Physics - Phenomenology · Physics 2008-12-10 S. Antusch , E. Fernandez-Martinez

We analyze the consequences of Lorentz violation (LV) to three-generation neutrino oscillation in the massless neutrino sector. We present a general formalism of three-family neutrino oscillation with neutrino flavor states being mixing…

High Energy Physics - Phenomenology · Physics 2010-01-15 Shimin Yang , Bo-Qiang Ma

Neutrinos produced in the atmosphere traverse a column density of air before being detected at neutrino observatories like IceCube or KM3NeT. In this work, we extend the neutrino flavor evolution in the {nuSQuIDS} code accounting for the…

High Energy Physics - Phenomenology · Physics 2024-05-21 Connor Sponsler , Matheus Hostert , Ivan Martinez-Soler , Carlos A. Argüelles

Theoretical models which present flavor changing neutrino interactions and simultaneously prevent this particle from acquiring any mass exist. We discuss some of them and their predictions for neutrino oscillations in matter which can…

High Energy Physics - Phenomenology · Physics 2007-05-23 M. M. Guzzo , H. Nunokawa , O. L. G. Peres , V. Pleitez , R. Zukanovich Funchal

We have analyzed the results of reactor and accelerator neutrino oscillation experiments in the framework of a general model with mixing of three neutrino fields and a neutrino mass hierarchy that can accommodate the results of the solar…

High Energy Physics - Phenomenology · Physics 2009-10-28 S. M. Bilenky , A. Bottino , C. Giunti , C. W. Kim

A new flavor changing electron neutrino interaction with matter would always dominate the nu_e oscillation probability at sufficiently high neutrino energies. Being suppressed by theta_{13}, the energy scale at which the new effect starts…

High Energy Physics - Phenomenology · Physics 2009-11-07 Mario Campanelli , Andrea Romanino

We present a new analysis of non-universal and flavor changing non-standard neutrino interactions (NSI) in \nu_e e or \bar{\nu}_e e scattering. Our global analysis of these process includes all relevant experiments, such as the most recent…

High Energy Physics - Phenomenology · Physics 2009-09-17 J. Barranco , O. G. Miranda , C. A. Moura , J. W. F. Valle

New physics beyond the Standard Model can lead to extra matter effects on neutrino oscillation if the new interactions distinguish among the three flavors of neutrino. In a previous paper, we argued that a long-baseline neutrino oscillation…

High Energy Physics - Phenomenology · Physics 2007-08-07 Minako Honda , Yee Kao , Naotoshi Okamura , Alexey Pronin , Tatsu Takeuchi

Our understanding of neutrino flavor conversion in the innermost regions of core-collapse supernovae and neutron star mergers is mostly limited to spherically symmetric configurations that facilitate the numerical solution of the quantum…

High Energy Astrophysical Phenomena · Physics 2024-11-28 Marie Cornelius , Shashank Shalgar , Irene Tamborra

We investigate the interference effects of non-standard neutrino-matter interactions (NSNI) with the mass-induced neutrino oscillations. The NSNI is composed of flavor-changing neutrino interactions (FCNI) and flavor-diagonal neutrino…

High Energy Physics - Phenomenology · Physics 2009-08-05 T. Hattori , T. Hasuike , S. Wakaizumi