scholarly journals Measurement of the atmospheric neutrino energy spectrum from 100 GeV to 400 TeV with IceCube

2011 ◽  
Vol 83 (1) ◽  
Author(s):  
R. Abbasi ◽  
Y. Abdou ◽  
T. Abu-Zayyad ◽  
J. Adams ◽  
J. A. Aguilar ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Atmospheric Neutrino ◽  
Neutrino Energy

NEW RESULTS FROM THE K2K EXPERIMENT

2005 ◽  
Vol 20 (14) ◽  
pp. 3055-3058
Author(s):  
◽  
RICHARD GRAN
Keyword(s):  
Energy Spectrum ◽  
Neutrino Oscillation ◽  
Neutrino Energy ◽  
Long Baseline ◽  
Neutrino Oscillation Experiment ◽  
Total Data ◽  
Oscillation Experiment

The K2K long-baseline neutrino oscillation experiment has analyzed all data including the period ending in February 2004. The total data sample is from 8.9 × 1019 protons on target. We observe 108 events at the far detector, Super-Kamiokande, when 150.9 + 11.6 - 10.0 were expected. Further, we observe a distortion of the neutrino energy spectrum which is consistent with νμ to ντ oscillation. The probability that we would observe these results if there is no neutrino oscillation is 0.011%, a 3.9 σ significance.

scholarly journals Measurement of the Solar Neutrino Energy Spectrum Using Neutrino-Electron Scattering

1999 ◽  
Vol 82 (12) ◽  
pp. 2430-2434 ◽  
Author(s):  
Y. Fukuda ◽  
T. Hayakawa ◽  
E. Ichihara ◽  
K. Inoue ◽  
K. Ishihara ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Electron Scattering ◽  
Solar Neutrino ◽  
Neutrino Energy

scholarly journals JUNO sensitivity to low energy atmospheric neutrino spectra

2021 ◽  
Vol 81 (10) ◽  
Author(s):  
Angel Abusleme ◽  
Thomas Adam ◽  
Shakeel Ahmad ◽  
Rizwan Ahmed ◽  
Sebastiano Aiello ◽  
...  
Keyword(s):  
Liquid Scintillator ◽  
Detection System ◽  
Atmospheric Neutrino ◽  
Light Yield ◽  
Theoretical Models ◽  
Neutrino Energy ◽  
Low Energy ◽  
Atmospheric Neutrinos ◽  
Scintillation Light ◽  
Light Pattern

AbstractAtmospheric neutrinos are one of the most relevant natural neutrino sources that can be exploited to infer properties about cosmic rays and neutrino oscillations. The Jiangmen Underground Neutrino Observatory (JUNO) experiment, a 20 kton liquid scintillator detector with excellent energy resolution is currently under construction in China. JUNO will be able to detect several atmospheric neutrinos per day given the large volume. A study on the JUNO detection and reconstruction capabilities of atmospheric $$\nu _e$$ ν e  and $$\nu _\mu $$ ν μ  fluxes is presented in this paper. In this study, a sample of atmospheric neutrino Monte Carlo events has been generated, starting from theoretical models, and then processed by the detector simulation. The excellent timing resolution of the 3” PMT light detection system of JUNO detector and the much higher light yield for scintillation over Cherenkov allow to measure the time structure of the scintillation light with very high precision. Since $$\nu _e$$ ν e  and $$\nu _\mu $$ ν μ  interactions produce a slightly different light pattern, the different time evolution of light allows to discriminate the flavor of primary neutrinos. A probabilistic unfolding method has been used, in order to infer the primary neutrino energy spectrum from the detector experimental observables. The simulated spectrum has been reconstructed between 100 MeV and 10 GeV, showing a great potential of the detector in the atmospheric low energy region.

scholarly journals Characterization of the PeV astrophysical neutrino energy spectrum using down-going tracks

2021 ◽  
Author(s):  
Yang Lyu ◽  
Rasha Abbasi ◽  
Markus Ackermann ◽  
Jenni Adams ◽  
Juanan Aguilar ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Neutrino Energy ◽  
Astrophysical Neutrino

scholarly journals Do hep neutrinos affect the solar neutrino energy spectrum?

1998 ◽  
Vol 436 (3-4) ◽  
pp. 243-250 ◽  
Author(s):  
John N. Bahcall ◽  
Plamen I. Krastev
Keyword(s):  
Energy Spectrum ◽  
Solar Neutrino ◽  
Neutrino Energy

scholarly journals Retrieval of energy spectra for all flavours of neutrinos from core-collapse supernova with multiple detectors

2020 ◽  
Vol 500 (1) ◽  
pp. 319-332
Author(s):  
Hiroki Nagakura
Keyword(s):  
Energy Spectrum ◽  
Three Dimensional ◽  
Large Error ◽  
Neutrino Energy ◽  
Energy Spectra ◽  
Joint Analysis ◽  
Core Collapse ◽  
Neutrino Experiment ◽  
Core Collapse Supernova ◽  
Reaction Channels

ABSTRACT We present a new method by which to retrieve energy spectrum for all falvours of neutrinos from core-collapse supernova (CCSN). In the retrieval process, we do not assume any analytic formulas to express the energy spectrum of neutrinos but rather take a direct way of spectrum reconstruction from the observed data; the singular value decomposition algorithm with a newly developed adaptive energy-gridding technique is adopted. We employ three independent reaction channels having different flavour sensitivity to neutrinos. Two reaction channels, inverse beta decay on proton and elastic scattering on electrons, from a water Cherenkov detector such as Super-Kamiokande (SK) and Hyper-Kamiokande (HK), and a charged current reaction channel with Argon from the Deep Underground Neutrino Experiment (DUNE) are adopted. Given neutrino oscillation models, we iteratively search the neutrino energy spectra at the CCSN source until they provide the consistent event counts in the three reaction channels. We test the capability of our method by demonstrating the spectrum retrieval to a theoretical neutrino data computed by our recent three-dimensional CCSN simulation. Although the energy spectrum with either electron-type or electron-type antineutrinos at the CCSN source has relatively large error compared to that of other species, the joint analysis with HK + DUNE or SK + DUNE will provide precise energy spectrum of all flavours of neutrinos at the source. Finally, we discuss perspectives for improvements of our method by using neutrino data of other detectors.

scholarly journals End of the cosmic neutrino energy spectrum

2014 ◽  
Vol 739 ◽  
pp. 99-101 ◽  
Author(s):  
L.A. Anchordoqui ◽  
V. Barger ◽  
H. Goldberg ◽  
J.G. Learned ◽  
D. Marfatia ◽  
...  
Keyword(s):  
Energy Spectrum ◽  
Neutrino Energy ◽  
Cosmic Neutrino
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