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Neutrino astrophysics offers new perspectives on the Universe investigation: high energy neutrinos, produced by the most energetic phenomena in our Galaxy and in the Universe, carry complementary (if not exclusive) information about the…

High Energy Astrophysical Phenomena · Physics 2010-02-11 T. Chiarusi , M. Spurio

The existence of cosmic rays of energies exceeding 10^20 eV is one of the mysteries of high energy astrophysics. The spectrum and the high energy to which it extends rule out almost all suggested source models. The challenges posed by…

Astrophysics · Physics 2009-11-10 E. Waxman

Model-independent mass limits assess the robustness of current cosmological measurements of the neutrino mass scale. Consistency between high-multipole and low-multiple Cosmic Microwave Background observations measuring such scale further…

Cosmology and Nongalactic Astrophysics · Physics 2023-10-12 Eleonora Di Valentino , Stefano Gariazzo , William Giarè , Olga Mena

The discovery of neutrino oscillations has shown that neutrinos, in contradiction to a prediction of the minimal standard model, have mass. Oscillations do not yield a value for the mass, but do set a lower limit of 0.02 eV on the average…

Nuclear Experiment · Physics 2015-02-03 R. G. Hamish Robertson

This is a brief review of the collider phenomenology of neutrino physics. Current and future colliders provide an ideal testing ground for (sub)TeV-scale neutrino mass models, as they can directly probe the messenger particles, which could…

High Energy Physics - Phenomenology · Physics 2026-02-09 P. S. Bhupal Dev

The cosmological upper bound on the total neutrino mass is the dominant limit on this fundamental parameter. Recent observations-soon to be improved-have strongly tightened it, approaching the lower limit set by oscillation data.…

Cosmology and Nongalactic Astrophysics · Physics 2025-05-29 Toni Bertólez-Martínez , Ivan Esteban , Rasmi Hajjar , Olga Mena , Jordi Salvado

The detection of cosmic rays with energy around and in excess of $10^{20}$ eV raises many questions that future experiments will help answering to. I address here my view of some of these open issues, as they are now and as they might be…

Astrophysics · Physics 2017-08-23 Pasquale Blasi

We briefly summarise the current status of neutrino masses and mixing, paying special attention to the prospects for observing new leptonic interactions.

High Energy Physics - Phenomenology · Physics 2014-11-20 F. del Aguila , J. de Blas , Adrian Carmona , Jose Santiago

The physics responsible for neutrino mass may reside at or below the TeV energy scale. The neutrino mass matrix in the $(\nu_e, \nu_\mu, \nu_\tau)$ basis may then be deduced from future high-energy accelerator experiments. The newly…

High Energy Physics - Phenomenology · Physics 2015-06-25 Ernest Ma

Astrophysical and cosmological consequences of a standard $\nu_{\tau}$ of (15 +- 3) keV/c^{2} mass are discussed in the light of the recent results of the solar, atmospheric and LSND neutrino experiments and theoretical prejudices.

Astrophysics · Physics 2007-05-23 R. J. Lindebaum , G. B. Tupper , R. D. Viollier

Low-energy neutrinos from the cosmic background are captured by objects in the sky that contain material susceptible of single beta decay. Neutrons, which compose most of a neutron star, capture low-energy neutrinos from the cosmic neutrino…

Cosmology and Nongalactic Astrophysics · Physics 2025-03-12 Beatriz Hernandez-Molinero , Raul Jimenez , Carlos Peña Garay

It has been shown that neutrino masses can be determined under the particle ansatz. In this paper, we give the general formulas of neutrino masses related to the neutrino oscillation parameters which show that there is a mass hierarchy…

High Energy Physics - Phenomenology · Physics 2018-03-01 Wen-Jie Wu , Xiang Zhou

The neutrino deficits observed in four solar neutrino experiments, relative to the theoretical predictions, have led to fresh insights into neutrino and solar physics. Neutrino emission from distant, energetic astronomical systems may form…

Considering the observed anisotropy in cosmic microwave background radiation ($\Delta T/T \leq 10^{-4}$) an upper limit on the electric charge asymmetry over a cosmological scale is found which is several orders more stringent than those…

High Energy Physics - Phenomenology · Physics 2016-09-01 Sujan Sengupta , Palash B. Pal

A new method to study the effects of neutrino masses on a supernova neutrino signal is proposed. The method relies exclusively on the analysis of the full statistics of neutrino events, it is independent of astrophysical assumptions, and…

Astrophysics · Physics 2009-11-10 Enrico Nardi , Jorge I. Zuluaga

Neutron stars have long been regarded as extra-terrestrial laboratories from which we can learn about extreme energy density matter at low temperatures. In this article, I highlight some of the recent advances made in astrophysical…

Solar and Stellar Astrophysics · Physics 2023-07-19 Madappa Prakash

While conventional oscillation experiments measure neutrino mixing parameters with high precision, these measurements are strictly confined to sub-TeV scales. At higher energies, renormalization-group effects can cause these parameters to…

High Energy Physics - Phenomenology · Physics 2026-04-17 Mauricio Bustamante , Qinrui Liu , Gabriela Barenboim

In the last two decades experiments have established the existence of neutrino oscillations and most of the related parameters have by now been measured with reasonable accuracy. These results have accomplished a major progress for particle…

High Energy Physics - Phenomenology · Physics 2015-06-19 Guido Altarelli

We determine the range of neutrino masses and cosmic radiation content allowed by the most recent CMB and large-scale structure data. In contrast to other recent works, we vary these parameters simultaneously and provide likelihood contours…

Astrophysics · Physics 2009-11-11 Steen Hannestad , Georg G. Raffelt

The paper reviews recent experiments on tritium beta spectroscopy searching for the absolute value of the electron neutrino mass $m(\nu_e)$. By use of dedicated electrostatic filters with high acceptance and resolution, the uncertainty on…

High Energy Physics - Experiment · Physics 2011-05-24 E. W. Otten , C. Weinheimer