Flavor distribution of UHE cosmic neutrino oscillations at neutrino telescopes

2009 ◽  
Vol 602 (1) ◽  
pp. 58-62 ◽  
Author(s):  
Zhi-zhong Xing
Keyword(s):  
Neutrino Oscillations ◽  
Neutrino Telescopes ◽  
Cosmic Neutrino

scholarly journals Measurement of Neutrino Oscillations with Neutrino Telescopes

2013 ◽  
Vol 2013 ◽  
pp. 1-16 ◽  
Author(s):  
Jürgen Brunner
Keyword(s):  
Neutrino Oscillations ◽  
Atmospheric Neutrino ◽  
Neutrino Beam ◽  
Mass Hierarchy ◽  
Atmospheric Neutrinos ◽  
Neutrino Mass Hierarchy ◽  
Neutrino Telescopes ◽  
Long Baseline ◽  
Scientific Results

IceCube and ANTARES are the world-largest neutrino telescopes. They are successfully taking data, producing a wealth of scientific results. Whereas their main goal is the detection of cosmic neutrinos with energies in the TeV-PeV range, both have demonstrated their capability to measure neutrino oscillations by studying atmospheric neutrinos with energies of 10–50 GeV. After recalling the methods of these measurements and the first published results of these searches, the potential of existing, and planned low-energy extensions of IceCube and KM3Net are discussed. These new detectors will be able to improve the knowledge of the atmospheric neutrino oscillation parameters, and in particular they might help to understand the neutrino mass hierarchy. Such studies, which use atmospheric neutrinos, could be complemented by measurements in a long-baseline neutrino beam, which is discussed as a long-term future option.

scholarly journals Neutrino Telescopes and High-Energy Cosmic Neutrinos

Universe ◽  
2020 ◽  
Vol 6 (2) ◽  
pp. 30 ◽  
Author(s):  
Andrea Palladino ◽  
Maurizio Spurio ◽  
Francesco Vissani
Keyword(s):  
Cosmic Rays ◽  
Review Paper ◽  
High Energy ◽  
Current Status ◽  
Neutrino Telescopes ◽  
Secondary Particles ◽  
Terrestrial Atmosphere ◽  
Icecube Detector ◽  
Cosmic Neutrino ◽  
Neutrino Astrophysics

In this review paper, we present the main aspects of high-energy cosmic neutrino astrophysics. We begin by describing the generic expectations for cosmic neutrinos, including the effects of propagation from their sources to the detectors. Then we introduce the operating principles of current neutrino telescopes, and examine the main features (topologies) of the observable events. After a discussion of the main background processes, due to the concomitant presence of secondary particles produced in the terrestrial atmosphere by cosmic rays, we summarize the current status of the observations with astrophysical relevance that have been greatly contributed by IceCube detector. Then, we examine various interpretations of these findings, trying to assess the best candidate sources of cosmic neutrinos. We conclude with a brief perspective on how the field could evolve within a few years.

scholarly journals THEORETICAL OVERVIEW OF NEUTRINO PROPERTIES

2008 ◽  
Vol 23 (26) ◽  
pp. 4255-4272 ◽  
Author(s):  
ZHI-ZHONG XING
Keyword(s):  
Mass Spectrum ◽  
Neutrino Physics ◽  
Neutrino Oscillations ◽  
Ultrahigh Energy ◽  
Neutrino Telescopes ◽  
Flavor Oscillations ◽  
The Road ◽  
Neutrino Astrophysics ◽  
Massive Neutrinos ◽  
Theoretical Overview

I give an overview of some basic properties of massive neutrinos. The first part of this talk is devoted to three fundamental questions about three known neutrinos and to their flavor issues — the mass spectrum, mixing pattern and CP violation. The second part of this talk is to highlight a few hot topics at the frontiers of neutrino physics and neutrino astrophysics, including the naturalness and testability of TeV seesaw mechanisms at the LHC, effects of nonstandard interactions on neutrino oscillations, flavor distributions of ultrahigh-energy cosmic neutrinos at neutrino telescopes, collective flavor oscillations of supernova neutrinos, flavor effects in thermal leptogenesis, the GSI anomaly and Mössbauer neutrino oscillations, and so on. I finally make some concluding remarks for the road ahead.

scholarly journals Measurement of Atmospheric Neutrino Oscillations with Very Large Volume Neutrino Telescopes

2015 ◽  
Vol 2015 ◽  
pp. 1-24 ◽  
Author(s):  
J. P. Yáñez ◽  
A. Kouchner
Keyword(s):  
Neutrino Oscillation ◽  
Neutrino Mass ◽  
Large Volume ◽  
Neutrino Oscillations ◽  
Atmospheric Neutrino ◽  
Atmospheric Neutrinos ◽  
Neutrino Telescopes ◽  
The Way

Neutrino oscillations have been probed during the last few decades using multiple neutrino sources and experimental set-ups. In the recent years, very large volume neutrino telescopes have started contributing to the field. First ANTARES and then IceCube have relied on large and sparsely instrumented volumes to observe atmospheric neutrinos for combinations of baselines and energies inaccessible to other experiments. Using this advantage, the latest result from IceCube starts approaching the precision of other established technologies and is paving the way for future detectors, such as ORCA and PINGU. These new projects seek to provide better measurements of neutrino oscillation parameters and eventually determine the neutrino mass ordering. The results from running experiments and the potential from proposed projects are discussed in this review, emphasizing the experimental challenges involved in the measurements.

scholarly journals A review of neutrino properties Neutrino oscillations - a historical overview and its projection

2018 ◽  
Vol 182 ◽  
pp. 02087
Author(s):  
Peter Minkowski
Keyword(s):  
Gauge Group ◽  
Neutrino Oscillations ◽  
Heavy Neutrino ◽  
Historical Overview ◽  
Wolfgang Pauli ◽  
Neutral Fermion ◽  
Oscillation Cycle ◽  
Neutrino Telescopes ◽  
Symmetric Complex ◽  
Selection Of

In a first part neutrino properties are presented from the beginnings through the letter of Wolfgang Pauli on 4. December 1930 suggesting a new neutral fermion to the “Radioactive Ladies and Gentlemen” at a Conference in Tübingen, contributing to the first oscillation cycle, based on my review at the meeting “Neutrino Telescopes in Venice” in 2005. cited in [1]. In the remaining part I shall present a selection of neutrino properties featuring the structure of mass and mixing of the light and heavy neutrino flavors, a symmetric, complex 6 by 6 matrix within the unifying SO10 gauge group, and present prospects for the detection of the leptonflavor violating processes Bs → μe; B → K μ e, also such involving b-flavored baryons .

scholarly journals AMBIGUITY IN SOURCE FLUX OF COSMIC/ASTROPHYSICAL NEUTRINOS: EFFECTS OF BI-MAXIMAL MIXING AND QUANTUM-GRAVITY INDUCED DECOHERENCE

2001 ◽  
Vol 16 (14) ◽  
pp. 917-925 ◽  
Author(s):  
D. V. AHLUWALIA
Keyword(s):  
Quantum Gravity ◽  
Neutrino Oscillations ◽  
Neutrino Flux ◽  
High Energy ◽  
Length Scale ◽  
Neutrino Detectors ◽  
Astrophysical Neutrinos ◽  
Cosmic Neutrino ◽  
Existing Data ◽  
Good Flavor

For high energy cosmic neutrinos Athar, Jeźabek, and Yasuda (AJY) have recently shown that the existing data on neutrino oscillations suggest that cosmic neutrino flux at the AGN/GRB source, F(νe):F(νμ):F(ντ) ≈ 1:2:0, oscillates to F(νe):F(νμ):F(ντ) ≈ 1:1:1. These results can be confirmed at AMANDA, Baikal, ANTARES and NESTOR, and other neutrino detectors with a good flavor resolution. Here, we rederive the AJY result from quasi bi-maximal mixing, and show that observation of F(νe):F(νμ):F(ντ) ≈ 1:1:1 does not necessarily establish cosmic neutrino flux at the AGN/GRB source to be F(νe):F(νμ):F(ντ) ≈ 1:2:0. We also note that if the length scale for the quantum-gravity induced decoherence for astrophysical neutrinos is of the order of a Mpc, then independent of the MNS matrix, the Liu–Hu–Ge (LHG) mechanism would lead to flux equalization for the cosmic/astrophysical neutrinos.

scholarly journals The Antares And Km3Net Neutrino Telescopes: Status And Outlook For Acoustic Studies

2019 ◽  
Vol 216 ◽  
pp. 01004
Author(s):  
Véronique Van Elewyck
Keyword(s):  
Atmospheric Neutrino ◽  
Neutrino Flux ◽  
High Energy ◽  
Neutrino Telescope ◽  
Mass Hierarchy ◽  
Neutrino Mass Hierarchy ◽  
Neutrino Telescopes ◽  
Cosmic Neutrino ◽  
Under Construction

The ANTARES detector has been operating continuously since 2007 in the Mediterranean Sea, demonstrating the feasibility of an undersea neutrino telescope. Its superior angular resolution in the reconstruction of neutrino events of all flavors results in unprecedented sensitivity for neutrino source searches in the southern sky at TeV energies, so that valuable constraints can be set on the origin of the cosmic neutrino flux discovered by theIceCube detector. The next generation KM3NeT neutrino telescope is now under construction, featuring two detectors with the same technology but different granularity: ARCA designed to search for high energy (TeV-PeV) cosmic neutrinos and ORCA designed to study atmospheric neutrino oscillations at the GeV scale, focusing on the determination of the neutrino mass hierarchy. Both detectors use acoustic devices for positioning calibration, and provide testbeds for acoustic neutrino detection.

scholarly journals ANTARES-IceCube combined search for neutrino pointsources in the Southern Hemisphere

2019 ◽  
Vol 207 ◽  
pp. 02008
Author(s):  
Giulia Illuminati
Keyword(s):  
Maximum Likelihood ◽  
Southern Hemisphere ◽  
Maximum Likelihood Method ◽  
Point Sources ◽  
Field Of View ◽  
Likelihood Method ◽  
Neutrino Telescopes ◽  
Discovery Potential ◽  
Cosmic Neutrino

A search for cosmic neutrino point-like sources covering the Southern hemisphere is presented, using 9 years and 7 years of data from the ANTARES and IceCube neutrino telescopes, respectively. The advantageous field of view of ANTARES as well as the high statistics provided by IceCube are exploited to open a window in the Southern sky where the sensitivity to point-sources improves by a factor ~ 2 compared to individual analyses. An unbinned maximum likelihood method is used to search for a localised excess of muon events over the expected background. Before applying the method to the unblinded dataset, the sensitivity and discovery potential of the search are computed through dedicated pseudo-experiments.

COSMIC NEUTRINO PHYSICS AND ASTROPHYSICS

2005 ◽  
Vol 20 (06) ◽  
pp. 1168-1179 ◽  
Author(s):  
THOMAS J. WEILER
Keyword(s):  
Neutrino Physics ◽  
Cosmic Rays ◽  
Particle Physics ◽  
Neutrino Telescopes ◽  
High Energies ◽  
Cosmic Neutrino ◽  
Neutrino Astronomy ◽  
The Way

Over the next decade or two, neutrino telescopes will map out the neutrino sky, analogous to the way the electromagnetic sky has been mapped for centuries. Like light and unlike cosmic-rays, the neutrinos will point back to their sources. Unlike light, the neutrinos are not attenuated at high energies and so will allow us to see farther into space, and deeper into sources. We illustrate with specific examples the promise which neutrino astronomy at energies from a TeV to a ZeV holds to study astrophysics and particle physics.

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