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High energy astrophysical neutrinos carry relevant information about the origin and propagation of cosmic rays. They can be created as a by-product of the interactions of cosmic rays in the sources and during propagation of these high…

Instrumentation and Methods for Astrophysics · Physics 2015-06-11 A. D. Supanitsky , G. Medina-Tanco

The evolution of neutrino flavor in dense environments such as core-collapse supernovae and binary compact object mergers constitutes an important and unsolved problem. Its solution has potential implications for the dynamics and…

High Energy Astrophysical Phenomena · Physics 2021-04-29 Ermal Rrapaj , Amol V. Patwardhan , Eve Armstrong , George Fuller

Neutrino flavor transformations in core-collapse supernovae and binary neutron star mergers represent a complex and unsolved problem that is integral to our understanding of the dynamics and nucleosynthesis in these environments. The high…

High Energy Physics - Phenomenology · Physics 2023-05-02 Amol V. Patwardhan , Michael J. Cervia , Ermal Rrapaj , Pooja Siwach , A. B. Balantekin

The observation of PeV neutrinos is an open window to study New Physics processes. Among all possible neutrino observables, the neutrino flavor composition can reveal underlying interactions during the neutrino propagation. We study the…

High Energy Physics - Phenomenology · Physics 2017-10-25 R. A. Lineros

Observing a high-statistics neutrino signal from a galactic supernova (SN) would allow one to test the standard delayed explosion scenario and may allow one to distinguish between the normal and inverted neutrino mass ordering due to the…

High Energy Physics - Phenomenology · Physics 2009-11-11 Georg G. Raffelt

In the dense supernova environment, neutrinos can undergo fast flavor conversions which depend on the large neutrino-neutrino interaction strength. It has been recently shown that both their presence and outcome can be affected when passing…

High Energy Physics - Phenomenology · Physics 2022-10-28 Francesco Capozzi , Madhurima Chakraborty , Sovan Chakraborty , Manibrata Sen

Neutrino flavor evolution inside a core-collapse supernova is a topic of active research. The core of a supernova is an intense source of neutrinos and antineutrinos. Self-interaction among neutrinos (as well as antineutrinos) gives rise to…

High Energy Astrophysical Phenomena · Physics 2025-02-20 Indrajit Ghose , Amitabha Lahiri

We review the particle physics ingredients affecting the normalization, shape, and flavor composition of astrophysical neutrinos fluxes, such as different production modes, magnetic field effects on the secondaries (muons, pions, kaons),…

High Energy Astrophysical Phenomena · Physics 2012-01-27 Walter Winter

The flavor evolution of neutrinos in dense astrophysical sources, such as core-collapse supernovae or compact binary mergers, is non-linear due to the coherent forward scattering of neutrinos among themselves. Recent work in this context…

High Energy Astrophysical Phenomena · Physics 2024-02-23 Marie Cornelius , Shashank Shalgar , Irene Tamborra

Flavor-dependent neutrino emission is critical to the evolution of a supernova and its neutrino signal. In the dense anisotropic interior of the star, neutrino-neutrino forward-scattering can lead to fast collective neutrino oscillations,…

High Energy Physics - Phenomenology · Physics 2021-02-22 Soumya Bhattacharyya , Basudeb Dasgupta

We point out possible features of neutrino spectra from a future galactic core collapse supernova that will enhance our understanding of neutrino mixing as well as supernova astrophysics. We describe the neutrino flavor conversions inside…

High Energy Physics - Phenomenology · Physics 2009-09-03 Amol Dighe

Our present knowledge of neutrinos can be summarized in terms of the "standard neutrino scenario". Phenomenology of this scenario as well as attempts to uncover physics behind neutrino mass and mixing are described. Goals of future studies…

High Energy Physics - Phenomenology · Physics 2008-12-18 Alexei Yu. Smirnov

The depth of our theoretical understanding of neutrino flavor mixing should match the importance of this phenomenon as a herald of long-awaited empirical challenges to the standard model of particle physics. After reviewing the familiar,…

High Energy Physics - Phenomenology · Physics 2007-05-23 Christian Y. Cardall

Neutrino gases are expected to form in high density astrophysical environments, and accurately modeling their flavor evolution is critical to understanding such environments. In this work we study a simplified model of such a dense neutrino…

High Energy Physics - Phenomenology · Physics 2024-01-09 Joshua D. Martin , Duff Neill , A. Roggero , Huaiyu Duan , J. Carlson

This paper examines neutrino flavor evolution outside a supernova neutrinosphere using a one-dimensional model that retains the non-linear nature of neutrino-neutrino interactions as well as some aspects of the full geometry. In some…

High Energy Astrophysical Phenomena · Physics 2015-06-26 B. D. Keister

The sources and production mechanisms of high-energy astrophysical neutrinos are largely unknown. A promising opportunity for progress lies in the study of neutrino flavor composition, i.e., the proportion of each flavor in the flux of…

High Energy Astrophysical Phenomena · Physics 2019-06-26 Mauricio Bustamante , Markus Ahlers

Investigations of dense neutrino cloud evolution through quantum kinetic equations led to the possibility of ``fast flavor" (FF) processes. It is shown here that the usual quantum kinetic equations, while signaling the instabilities that…

High Energy Physics - Phenomenology · Physics 2023-07-21 R. F. Sawyer

Observation of ultra-high energy astrophysical neutrinos and identification of their flavors have been proposed for future neutrino telescopes. The flavor ratio of astrophysical neutrinos observed on the Earth depends on both the initial…

High Energy Physics - Phenomenology · Physics 2014-02-12 Kwang-Chang Lai , Guey-Lin Lin , Tsung-Che Liu

In most of the proposals for new physics beyond the standard model, neutrinos have new interactions and some of them have phenomenological consequences that, although at present they may seem purely academic, probably will have to be taken…

High Energy Physics - Phenomenology · Physics 2022-07-05 Vicente Pleitez

Neutrino interactions with an external environment can in influence the neutrino oscillation pattern and the oscillations can be damped as a result of the neutrino quantum decoherence. In particular, the quantum decoherence of neutrino…

High Energy Physics - Phenomenology · Physics 2020-05-20 Konstantin Stankevich , Alexander Studenikin