scholarly journals Reducing the solar neutrino background in dark matter searches using polarized helium-3

2016 ◽  
Vol 94 (5) ◽  
Author(s):  
Tarso Franarin ◽  
Malcolm Fairbairn
Keyword(s):  
Dark Matter ◽  
Solar Neutrino ◽  
Helium 3 ◽  
Neutrino Background ◽  
Polarized Helium

Neutrino emission from the collapse of ∼104 M⊙ Population III supermassive stars

2021 ◽  
Vol 508 (1) ◽  
pp. 828-841
Author(s):  
Chris Nagele ◽  
Hideyuki Umeda ◽  
Koh Takahashi ◽  
Takashi Yoshida ◽  
Kohsuke Sumiyoshi
Keyword(s):  
Dark Matter ◽  
Massive Star ◽  
Direct Detection ◽  
Mass Range ◽  
Core Collapse ◽  
Low Density ◽  
Large Radius ◽  
Neutrino Luminosity ◽  
Neutrino Background ◽  
Population Iii

ABSTRACT We calculate the neutrino signal from Population III supermassive star (SMS) collapse using a neutrino transfer code originally developed for core-collapse supernovae and massive star collapse. Using this code, we are able to investigate the SMS mass range thought to undergo neutrino trapping (∼104 M⊙), a mass range which has been neglected by previous works because of the difficulty of neutrino transfer. For models in this mass range, we observe a neutrino sphere with a large radius and low density compared to typical massive star neutrino spheres. We calculate the neutrino light curve emitted from this neutrino sphere. The resulting neutrino luminosity is significantly lower than the results of a previous analytical model. We briefly discuss the possibility of detecting a neutrino burst from an SMS or the neutrino background from many SMSs and conclude that the former is unlikely with current technology, unless the SMS collapse is located as close as 1 Mpc, while the latter is also unlikely even under very generous assumptions. However, the SMS neutrino background is still of interest as it may serve as a source of noise in proposed dark matter direct detection experiments.

scholarly journals THE DARK-MATTER WORLD: ARE THERE DARK-MATTER GALAXIES?

2012 ◽  
Vol 10 ◽  
pp. 1-12
Author(s):  
W-Y. PAUCHY HWANG
Keyword(s):  
Dark Matter ◽  
Time Span ◽  
Neutrino Masses ◽  
Ordinary Matter ◽  
Cosmic Neutrino Background ◽  
Cosmic Neutrino ◽  
Neutrino Background

We attempt to answer whether neutrinos and antineutrinos, such as those in the cosmic neutrino background, would clusterize among themselves or even with other dark-matter particles, under certain time span, say 1 Gyr. With neutrino masses in place, the similarity with the ordinary matter increases and so is our confidence for neutrino clustering if time is long enough. In particular, the clusterings could happen with some seeds (cf. see the text for definition), the chance in the dark-matter world to form dark-matter galaxies increases. If the dark-matter galaxies would exist in a time span of 1 Gyr, then they might even dictate the formation of the ordinary galaxies (i.e. the dark-matter galaxies get formed first); thus, the implications for the structure of our Universe would be tremendous.

scholarly journals Neutrino Masses, Neutrino Oscillations and Dark Matter

1990 ◽  
Vol 121 ◽  
pp. 213-230
Author(s):  
Haim Harari
Keyword(s):  
Dark Matter ◽  
Solar Neutrino ◽  
Neutrino Oscillations ◽  
Mass Range ◽  
Neutrino Masses ◽  
Direct Measurements ◽  
Theoretical Considerations

AbstractWe discuss bounds on neutrino masses using an analysis based on direct measurements, cosmological bounds, oscillation experiments, the solar neutrino puzzle and theoretical considerations on neutrino decays. We present four possible solutions for the mass range of the three neutrino flavors. We outline experiments which can distinguish among these solutions and discuss their implications for the cosmological dark matter problem.

scholarly journals Readout strategies for directional dark matter detection beyond the neutrino background

2015 ◽  
Vol 92 (6) ◽  
Author(s):  
Ciaran A. J. O’Hare ◽  
Anne M. Green ◽  
Julien Billard ◽  
Enectali Figueroa-Feliciano ◽  
Louis E. Strigari
Keyword(s):  
Dark Matter ◽  
Dark Matter Detection ◽  
Neutrino Background ◽  
Matter Detection

Solar neutrino searches and cold dark matter

1988 ◽  
Vol 205 (4) ◽  
pp. 553-558 ◽  
Author(s):  
Keith A. Olive ◽  
Mark Srednicki
Keyword(s):  
Dark Matter ◽  
Solar Neutrino ◽  
Cold Dark Matter

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
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