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The violation of lepton-flavor-universality in the neutrino-Z interactions can lead to extra matter effects on neutrino oscillations at high energies, beyond that due to the usual charged-current interaction of the electron-neutrino. We…

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

Recent experimental research progress of solar neutrino and neutrino oscillation reveals that neutrinos do have nonzero mass, which poses a serious challenge to theoretical physics. Two symmetries, the common invariance under the space-time…

High Energy Physics - Phenomenology · Physics 2007-05-23 Guang-Jiong Ni

Neutrino oscillations are well established and the relevant parameters determined with good precision, except for the CP phase, in terms of a unitary lepton mixing matrix. Seesaw extensions of the Standard Model predict unitarity deviations…

High Energy Physics - Phenomenology · Physics 2016-04-08 F. J. Escrihuela , D. V. Forero , O. G. Miranda , M. Tortola , J. W. F. Valle

Models of leptonic flavour with discrete symmetries can provide an attractive explanation of the pattern of elements found in the leptonic mixing matrix. The next generation of neutrino oscillation experiments will allow the mixing…

High Energy Physics - Phenomenology · Physics 2015-06-19 Peter Ballett , Stephen F. King , Christoph Luhn , Silvia Pascoli , Michael A. Schmidt

When the neutral current neutrino-neutrino interaction is treated completely, rather than as an interaction among angle-averaged distributions, or as a set of flavor-diagonal effective potentials, the result can be flavor mixing at a speed…

High Energy Physics - Phenomenology · Physics 2009-11-11 R. F. Sawyer

This pedagogical overview will cover the current status of neutrino physics from an experimentalist's point of view, focusing primarily on oscillation studies. The evidence for neutrino oscillations will be presented, along with the…

High Energy Physics - Experiment · Physics 2017-08-23 K. Scholberg

Three interesting scenarios for neutrino mixing, i.e., (i) small-large mixing scenario, (ii) nearly bi-maximal mixing scenario and (iii) three-flavor oscillation scenario, are analyzed in connection with three possible assignments of the…

High Energy Physics - Phenomenology · Physics 2014-11-17 Yue-Liang Wu

In environments with high dense neutrino gases, such as in core-collapse supernovae, the neutrinos can experience collective neutrino oscillation due to their self-interactions. In particular, fast flavor conversion driven by the crossings…

High Energy Physics - Phenomenology · Physics 2021-11-01 Masamichi Zaizen , Taiki Morinaga

We study two-flavor collective neutrino oscillations in the dense-neutrino region above the neutrino sphere in a supernova (SN). The angular dependence of the neutrino-neutrino interaction potential causes "multi-angle" effects that can…

High Energy Physics - Phenomenology · Physics 2008-11-26 Andreu Esteban-Pretel , Sergio Pastor , Ricard Tomas , Georg Raffelt , Gunter Sigl

Neutrino interactions with matter play an important role in determining the nucleosynthesis outcome in explosive astrophysical environments such as core-collapse supernovae or mergers of compact objects. In this article, we first discuss…

High Energy Astrophysical Phenomena · Physics 2016-03-16 Meng-Ru Wu , Gabriel Martinez-Pinedo , Yong-Zhong Qian

We present a three-parameter neutrino-oscillation model for three flavors of massless neutrinos with Fermi-point splitting and tri-maximal mixing angles. One of these parameters is the T-violating phase \epsilon, for which the experimental…

High Energy Physics - Phenomenology · Physics 2010-11-05 Frans R. Klinkhamer

We investigate the impact of the nonzero neutrino splitting and elastic neutrino-nucleon collisions on fast neutrino oscillations. Our calculations confirm that a small neutrino mass splitting and the neutrino mass hierarchy have very…

High Energy Physics - Phenomenology · Physics 2021-03-02 Joshua D. Martin , J. Carlson , Vincenzo Cirigliano , Huaiyu Duan

We study Lorentz violation effects on flavor transitions of high energy astrophysical neutrinos. It is shown that the appearance of Lorentz violating Hamiltonian can drastically change the flavor transition probabilities of astrophysical…

High Energy Physics - Phenomenology · Physics 2018-01-15 Kwang-Chang Lai , Wei-Hao Lai , Guey-Lin Lin

This letter proposes an alternative quantum mechanical picture for the observed phenomena of neutrino oscillations. It is assumed in the following that neutrinos interact via diabatic (or localised) interactions with a new particle field,…

High Energy Physics - Phenomenology · Physics 2020-12-18 M. Bergevin

Massive neutrinos and leptonic mixings have provided the first evidence of flavour violation in the lepton sector, opening a unique gateway to many new phenomena. Among the latter, one finds processes violating lepton number, charged lepton…

High Energy Physics - Phenomenology · Physics 2017-12-19 Ana M. Teixeira

The advent of very high intensity neutrino beams for the study of neutrino oscillations has also made possible a new generation of experiments which will study neutrino interactions on different nuclei with unprecedented precision. The use…

Nuclear Experiment · Physics 2011-11-15 Ronald D. Ransome

A dense neutrino medium could experience self-induced flavor conversions on relatively small scales in the presence of the so-called fast flavor conversion modes. Owing to the fact that fast conversion scales could be much smaller than the…

High Energy Astrophysical Phenomena · Physics 2019-02-13 Sajad Abbar , Maria Cristina Volpe

We calculate fast conversions of two flavor neutrinos by considering Boltzmann collisions of neutrino scatterings. In an idealized angular distribution of neutrinos with electron-lepton number crossing, we find that the collision terms of…

High Energy Physics - Phenomenology · Physics 2022-07-06 Hirokazu Sasaki , Tomoya Takiwaki

We compare the effectiveness of various tests of three-flavor mixing in future long-baseline neutrino oscillation experiments. We analyze a representative case of mixing in a simplified three-flavor scheme, whose relevant parameters are one…

High Energy Physics - Phenomenology · Physics 2008-11-26 G. L. Fogli , E. Lisi

In studies of neutrino electromagnetic properties we discuss three very interesting aspects related to neutrino spin oscillations. First we consider neutrino mixing and oscillations in the mass and flavour bases under the influence of a…

High Energy Physics - Phenomenology · Physics 2017-05-18 Alexande Studenikin