scholarly journals Reconciling neutrino flux from heavy dark matter decay and recent events at IceCube

2014 ◽  
Vol 2014 (6) ◽  
Author(s):  
Atri Bhattacharya ◽  
Mary Hall Reno ◽  
Ina Sarcevic
Keyword(s):  
Dark Matter ◽  
Neutrino Flux

scholarly journals Does dark matter affect the solar neutrino flux?

Nature ◽  
1986 ◽  
Vol 320 (6057) ◽  
pp. 38-39 ◽  
Author(s):  
A. De Rújula ◽  
S.L. Glashow ◽  
L. Hall
Keyword(s):  
Dark Matter ◽  
Solar Neutrino ◽  
Neutrino Flux ◽  
Solar Neutrino Flux

scholarly journals Supergravity Model of Inflation and Explaining IceCube HESE Data via PeV Dark Matter Decay

2020 ◽  
Vol 2020 ◽  
pp. 1-14
Author(s):  
Girish Kumar Chakravarty ◽  
Najimuddin Khan ◽  
Subhendra Mohanty
Keyword(s):  
Dark Matter ◽  
Scalar Field ◽  
Neutrino Flux ◽  
Gauge Coupling ◽  
Susy Breaking ◽  
Particle Spectrum ◽  
Energy Particle ◽  
Hidden Sector ◽  
Kähler Potential ◽  
Gut Scale

We construct a unified model of inflation and PeV dark matter with an appropriate choice of no-scale Kähler potential, superpotential, and gauge kinetic function in terms of MSSM fields and hidden sector Polonyi field. The model is consistent with the CMB observations and can explain the PeV neutrino flux observed at IceCube HESE. A Starobinsky-like Higgs-sneutrino plateau inflation is obtained from the D-term SUGRA potential while F-term being subdominant during inflation. To get PeV dark matter, SUSY breaking at PeV scale is achieved through Polonyi field. This sets the scale for soft SUSY breaking parameters m0,m1/2,A0 at the GUT scale in terms of the parameters of the model. The low-energy particle spectrum is obtained by running the RGEs. We show that the ~125 GeV Higgs and the gauge coupling unification can be obtained in this model. The 6 PeV bino-type dark matter is a subdominant fraction (~11%) of the relic density, and its decay gives the PeV scale neutrino flux observed at IceCube by appropriately choosing the couplings of the R-parity violating operators. Also, we find that there is degeneracy in scalar field parameters γ,β and coupling ζ value in producing the correct amplitude of CMB power spectrum. However, the value of parameter tanβ=1.8, which is tightly fixed from the requirement of PeV scale SUSY breaking, removes the degeneracy in the values of the scalar field parameters to provide a unique solution for inflation. In this way, it brings the explanation for dark matter, PeV neutrinos, and inflation within the same framework.

ICECUBE-DEEPCORE-PINGU: FUNDAMENTAL NEUTRINO AND DARK MATTER PHYSICS AT THE SOUTH POLE

2011 ◽  
Vol 26 (39) ◽  
pp. 2899-2915 ◽  
Author(s):  
D. JASON KOSKINEN
Keyword(s):  
Dark Matter ◽  
Atmospheric Neutrino ◽  
Neutrino Flux ◽  
Neutrino Telescope ◽  
Low Energy ◽  
Atmospheric Neutrinos ◽  
South Pole ◽  
The South ◽  
Original Design ◽  
Successful Observation

The IceCube neutrino observatory at the South Pole uses 1 km3 of instrumented ice to detect both astrophysical and atmospheric neutrinos. Expanding the capabilities of the original design, the DeepCore sub-array is a low-energy extension to IceCube which will collect [Formula: see text] atmospheric neutrinos a year. The high statistics sample will allow DeepCore to make neutrino oscillation measurements at higher energies and longer baselines than current experiments. The first successful observation of neutrino induced cascades in a neutrino telescope has recently been observed in DeepCore, which upon further cultivation should help refine atmospheric neutrino flux models. Besides the fundamental neutrino physics, the low-energy reach of DeepCore, down to as low as 10 GeV, and multi-megaton effective volume will enhance indirect searches for WIMP-like dark matter. A new proposal seeking to lower the energy reach down to [Formula: see text] GeV known as the Phased IceCube Next Generation Upgrade (or PINGU) will also be described.

scholarly journals On the τ flavor of the cosmic neutrino flux

2021 ◽  
Vol 2021 (7) ◽  
Author(s):  
Yasaman Farzan
Keyword(s):  
Dark Matter ◽  
Degrees Of Freedom ◽  
Neutrino Flux ◽  
High Energy ◽  
New Physics ◽  
Beyond The Standard Model ◽  
New Era ◽  
The Standard Model ◽  
Cosmic Neutrino ◽  
Standard Picture

Abstract Observation of high energy cosmic neutrinos by ICECUBE has ushered in a new era in exploring both cosmos and new physics beyond the Standard Model (SM). In the standard picture, although mostly νμ and νe are produced in the source, oscillation will produce ντen route. Certain beyond SM scenarios, like interaction with ultralight DM can alter this picture. Thus, the flavor composition of the cosmic neutrino flux can open up the possibility of exploring certain beyond the SM scenarios that are inaccessible otherwise. We show that the τ flavor holds a special place among the neutrino flavors in elucidating new physics. Interpreting the two anomalous events observed by ANITA as ντ events makes the tau flavor even more intriguing. We study how the detection of the two tau events by ICECUBE constrains the interaction of the neutrinos with ultralight dark matter and discuss the implications of this interaction for even higher energy cosmic neutrinos detectable by future radio telescopes such as ARA, ARIANNA and GRAND. We also revisit the 3 + 1 neutrino scheme as a solution to the two anomalous ANITA events and clarify a misconception that exists in the literature about the evolution of high energy neutrinos in matter within the 3 + 1 scheme with a possibility of scattering off nuclei. We show that the existing bounds on the flux of ντ with energy of EeV rules out this solution for the ANITA events. We show that the 3 + 1 solution can be saved from both this bound and from the bound on the extra relativistic degrees of freedom in the early universe by turning on the interaction of neutrinos with ultralight dark matter.

scholarly journals Unstable gravitino dark matter and neutrino flux

2009 ◽  
Vol 2009 (01) ◽  
pp. 029-029 ◽  
Author(s):  
Laura Covi ◽  
Michael Grefe ◽  
Alejandro Ibarra ◽  
David Tran
Keyword(s):  
Dark Matter ◽  
Neutrino Flux
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