scholarly journals Recent Results from IceCube

2018 ◽  
Vol 46 ◽  
pp. 1860048 ◽  
Author(s):  
Dawn Williams
Keyword(s):  
Energy Range ◽  
Neutrino Oscillation ◽  
Atmospheric Neutrino ◽  
High Energy ◽  
South Pole ◽  
Neutrino Interactions ◽  
Diffuse Flux ◽  
High Energy Neutrinos

The IceCube Neutrino Observatory is a cubic kilometer detector located at the geographic South Pole. IceCube was designed to detect high-energy neutrinos from cosmic sources, and the DeepCore extension of IceCube enables the study of atmospheric neutrino interactions down to energies of a few GeV. IceCube has detected a diffuse flux of neutrinos in the energy range from 100 TeV to several PeV, the properties of which are inconsistent with an atmospheric origin, and has also published competitive limits on atmospheric neutrino oscillation parameters and other neutrino properties. This paper presents the latest results from IceCube and prospects for future upgrades and expansions of the detector.

Limits on the Diffuse Flux of Ultra-High Energy Neutrinos from the RICE Experiment

2003 ◽  
Author(s):  
J. Adams ◽  
Chris Allen ◽  
A. Bean ◽  
David Z. Besson ◽  
D. J. Box ◽  
...  
Keyword(s):  
High Energy ◽  
Ultra High Energy ◽  
Diffuse Flux ◽  
High Energy Neutrinos ◽  
Ultra High Energy Neutrinos

STATUS AND PERSPECTIVES OF DOUBLE BETA DECAY — WINDOW TO NEW PHYSICS BEYOND THE STANDARD MODEL OF PARTICLE PHYSICS

1998 ◽  
Vol 13 (23) ◽  
pp. 3953-3992 ◽  
Author(s):  
H. V. KLAPDOR-KLEINGROTHAUS
Keyword(s):  
Standard Model ◽  
Beta Decay ◽  
Neutrino Oscillation ◽  
Atmospheric Neutrino ◽  
Large Angle ◽  
High Energy ◽  
New Physics ◽  
Double Beta Decay ◽  
Boson Mass ◽  
Electron Mass

Nuclear double beta decay provides an extraordinarily broad potential to search for beyond Standard Model physics, probing already now the TeV scale, on which new physics should manifest itself. These possibilities are reviewed here. First, the results of present generation experiments are presented. The most sensitive one of them — the Heidelberg–Moscow experiment in the Gran Sasso — probes the electron mass now in the sub eV region and will reach a limit of ~ 0.1 eV in a few years. Basing to a large extent on the theoretical work of the Heidelberg Double Beta Group in the last two years, results are obtained also for SUSY models (R-parity breaking, sneutrino mass), leptoquarks (leptoquark–Higgs coupling), compositeness, right-handed W boson mass and others. These results are comfortably competitive to corresponding results from high-energy accelerators like TEVATRON, HERA, etc. Second, future perspectives of ββ research are discussed. A new Heidelberg experimental proposal (GENIUS) is presented which would allow one to increase the sensitivity for Majorana neutrino masses from the present level of at best 0.1 eV down to 0.01 or even 0.001 eV. Its physical potential would be a breakthrough into the multi-TeV range for many beyond standard models. Its sensitivity for neutrino oscillation parameters would be higher than that for all present terrestrial neutrino oscillation experiments and of those planned for the future. It could probe directly the atmospheric neutrino problem and even the large angle solution of the solar neutrino problem. It would further, already in a first step, using only 100 kg of natural Ge detectors, cover almost the full MSSM parameter space for prediction of neutralinos as cold dark matter, making the experiment competitive to LHC in the search for supersymmetry.

scholarly journals INTER-DIVISION IX-X WORKING GROUP ENCOURAGING THE INTERNATIONAL DEVELOPMENT OF ANTARCTIC ASTRONOMY

2008 ◽  
Vol 4 (T27A) ◽  
pp. 328-329
Author(s):  
Michael Burton ◽  
Carlos A. Abia ◽  
John E. Carlstrom ◽  
Vincent Coudé du Foresto ◽  
Xiangqun Cui ◽  
...  
Keyword(s):  
Dark Energy ◽  
Equation Of State ◽  
International Development ◽  
Working Group ◽  
High Energy ◽  
South Pole ◽  
The South ◽  
South Pole Telescope ◽  
The Us ◽  
High Energy Neutrinos

Two major astronomical experiments are underway at the US Amundsen-Scott South Pole Station. The first is the South Pole Telescope, a 10m sub-millimetre telescope designed to measure primary and secondary anisotropies in the CMBR, with the aim of placing constraints on the equation of state for dark energy. The second is the IceCube neutrino observatory, which will be a cubic kilometre array designed to image sources of high energy neutrinos.

scholarly journals e- discrimination at high energy in the JUNO detector

2019 ◽  
Vol 209 ◽  
pp. 01011
Author(s):  
Giulio Settanta ◽  
Stefano Maria Mari ◽  
Cristina Martellini ◽  
Paolo Montini
Keyword(s):  
Neutrino Oscillation ◽  
Liquid Scintillator ◽  
Detection Threshold ◽  
Atmospheric Neutrino ◽  
Neutrino Flux ◽  
Cosmic Ray ◽  
Energy Detection ◽  
High Energy ◽  
Low Energy ◽  
Temporal Behaviour

Cosmic Ray and neutrino oscillation physics can be studied by using atmospheric neutrinos. JUNO (Jiangmen Underground Neutrino Observatory) is a large liquid scintillator detector with low energy detection threshold and excellent energy resolution. The detector performances allow the atmospheric neutrino oscillation measurements. In this work, a discrimination algorithm for different reaction channels of neutrino-nucleon interactions in the JUNO liquid scintillator, in the GeV/sub-GeV energy region, is presented. The atmospheric neutrino flux is taken as reference, considering $\mathop {{v_\mu }}\limits^{( - )} $ and $\mathop {{v_e}}\limits^{( - )} $. The different temporal behaviour of the classes of events have been exploited to build a timeprofile-based discrimination algorithm. The results show a good selection power for $\mathop {{v_e}}\limits^{( - )} $ CC events, while the $\mathop {{v_\mu }}\limits^{( - )} $ CC component suffers of an important contamination from NC events at low energy, which is under study. Preliminary results are presented.

scholarly journals EFFECTS OF NEUTRINO OSCILLATION ON THE SUPERNOVA RELIC NEUTRINO BACKGROUND

1996 ◽  
Vol 05 (05) ◽  
pp. 519-527 ◽  
Author(s):  
TOMONORI TOTANI ◽  
KATSUHIKO SATO
Keyword(s):  
Energy Range ◽  
Neutrino Oscillation ◽  
Magnetic Moment ◽  
Upper Bound ◽  
Event Rate ◽  
High Energy ◽  
Mass Hierarchy ◽  
Majorana Neutrinos ◽  
Standard Calculation ◽  
Neutrino Background

We investigate to what extent the oscillation or conversion of neutrinos enhances the expected event rate of the supernova relic neutrino background (SRN) at the SuperKamiokande detector (SK). The SRN [Formula: see text] can be almost completely exchanged with vμ-like neutrinos by the MSW oscillation under the inverse mass hierarchy with Δm2~ 10−8–105[eV2], or by the magnetic moment of Majorana neutrinos with μv≳10−12μB and Δm2~10−4–10° [eV2]. In the standard calculation of the SRN flux, the event rate of the SRN [Formula: see text] at the SK in the observable energy range of 15–40 MeV can be enhanced from 1.2 yr−1 to 2.4 yr−1 if all [Formula: see text] are exchanged with vμ-like neutrinos. The enhancement is prominent especially in the high energy range (≳ 25 MeV). In the astrophysically optimistic calculation, the event rate becomes as high as 9.4 yr−1. Because the theoretical upper bound of the SRN events without oscillation is about 5 yr−1 taking into account the various astrophysical uncertainties, we might have to resort to the neutrino oscillation if more than 5 events in a year, as well as a significantly harder spectrum, were observed in the SK.

SEARCHES FOR A DIFFUSE FLUX OF EXTRATERRESTRIAL MUON NEUTRINOS WITH THE ICECUBE OBSERVATORY

2009 ◽  
Vol 18 (10) ◽  
pp. 1603-1607
Author(s):  
◽  
LEVENT DEMIRÖRS
Keyword(s):  
Cosmic Ray ◽  
High Energy ◽  
Muon Neutrinos ◽  
Atmospheric Neutrinos ◽  
South Pole ◽  
The South ◽  
Diffuse Flux

The IceCube observatory is currently being contructed at the South Pole. Scheduled to be completed in 2011, it already offers a large increase in sensitivity over its predecessor, the AMANDA detector. This increase is expected to improve significantly the search for extraterrestrial neutrinos which are currently under way. One of the key searches at the IceCube observatory is for a diffuse flux of high energy extraterrestrial muon neutrinos, in excess of that observed from cosmic-ray induced atmospheric neutrinos. In this paper, we will review results obtained with the AMANDA and early IceCube detectors as well as give an outlook on upcoming analyses.

MONOLITH: A MASSIVE MAGNETIZED TRACKING CALORIMETER FOR THE STUDY OF ATMOSPHERIC NEUTRINO OSCILLATIONS

2001 ◽  
Vol 16 (supp01b) ◽  
pp. 736-738
Author(s):  
◽  
FRANCESCO TERRANOVA
Keyword(s):  
Neutrino Oscillation ◽  
Neutrino Oscillations ◽  
Atmospheric Neutrino ◽  
Cosmic Ray ◽  
High Energy ◽  
Neutrino Beam ◽  
Muon Neutrinos ◽  
Matter Effects ◽  
Sensitivity Range ◽  
Atmospheric Muon

MONOLITH is a proposed massive (34 kton) magnetized tracking calorimeter at the Gran Sasso laboratory in Italy, optimized for the detection of high energy atmospheric muon neutrinos. The main goal is to establish (or reject) the neutrino oscillation hypothesis through an explicit observation of the full first oscillation swing. The Δm2 sensitivity range for this measurement comfortably covers the complete Super-Kamiokande allowed region. Other measurements include studies of matter effects and the up/down ratio of NC events, the study of cosmic ray muons in the multi-TeV range, and auxiliary measurements from the CERN to Gran Sasso neutrino beam.

An upper limit on the diffuse flux of high energy neutrinos obtained with the Baikal detector NT-96

2000 ◽  
Vol 14 (2) ◽  
pp. 61-66 ◽  
Author(s):  
V.A. Balkanov ◽  
I.A. Belolaptikov ◽  
L.B. Bezrukov ◽  
N.M. Budnev ◽  
A.G. Chensky ◽  
...  
Keyword(s):  
High Energy ◽  
Diffuse Flux ◽  
Upper Limit ◽  
High Energy Neutrinos

scholarly journals Gravitational waves and neutrinos joint searches in the Mediterranean Sea

2019 ◽  
Vol 207 ◽  
pp. 02009
Author(s):  
Bruny Baret
Keyword(s):  
Gravitational Waves ◽  
Mediterranean Sea ◽  
High Energy ◽  
Point Sources ◽  
High Energies ◽  
Diffuse Flux ◽  
High Energy Neutrinos ◽  
The Mediterranean ◽  
Degree Level

The recent detection of gravitational waves (GW) have launched effectively the field of multimessenger astronomy. High energy neutrinos (HEN) have been detected as a diffuse flux and show indications of transient point sources. They can bring crucial informations on cataclysmic cosmic events by identifying hadrons acceleration to high energies and pointing back to the source at the degree level which is an asset for follow-up of GW events with photonic telescopes. We will review the current searches for joint sources of gravitational waves and high energy neutrinos performed with the ANTARES telescope and the perspectives offered by its successor KM3NeT.

Sign in / Sign up

Export Citation Format

Share Document