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Flavor sensitivity to theta_13 and the mass hierarchy for neutrinos from solar WIMP annihilation
High Energy Physics - Phenomenology · Submitted 12 Feb 2010
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim For WIMP-annihilation neutrinos injected with energies in the "sweet region" between 300 MeV and 10 GeV at the Sun's center, a significant and revealing dependence on the neutrino mass hierarchy and the mixing angle theta_13 down to 0.5 degrees is found in the flavor ratios arriving at Earth.
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The abstract, sentence by sentence
The effect of the higher-energy 2nd resonance and the associated adiabatic-to-nonadiabatic transition on neutrino propagation in solar matter is presented. For WIMP-annihilation neutrinos injected with energies in the "sweet region" between 300 MeV and 10 GeV at the Sun's center, a significant and revealing dependence on the neutrino mass hierarchy and the mixing angle theta_13 down to 0.5 degrees is found in the flavor ratios arriving at Earth. In addition, the amplification of flavor ratios in the sweet region allows a better discrimination among possible annihilation modes of the solar dark matter. Under mild assumptions on WIMP properties, it is estimated that 200 neutrino events in the sweet region would be required for inferences of theta_13, the mass hierarchy, and the dominant WIMP annihilation mode. Future large-volume, low-energy neutrino detectors are likely needed if the measurement is to be made.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The effect of the higher-energy 2nd resonance and the associated adiabatic-to-nonadiabatic transition on neutrino propagation in solar matter is presented. | contribution 0.92 | 0.71 | 0.05 | asserted 0.94 |
| s1 | For WIMP-annihilation neutrinos injected with energies in the "sweet region" between 300 MeV and 10 GeV at the Sun's center, a significant and revealing dependence on the neutrino mass hierarchy and the mixing angle theta_13 down to 0.5 degrees is found in the flavor ratios arriving at Earth. | result 1.00 | 0.91 | 0.81 | asserted 1.00 |
| s2 | In addition, the amplification of flavor ratios in the sweet region allows a better discrimination among possible annihilation modes of the solar dark matter. | interpretation 0.58 | 0.80 | 0.11 | asserted 0.86 |
| s3 | Under mild assumptions on WIMP properties, it is estimated that 200 neutrino events in the sweet region would be required for inferences of theta_13, the mass hierarchy, and the dominant WIMP annihilation mode. | result 0.74 | 0.81 | 0.17 | hedged possibility 0.51 |
| s4 | Future large-volume, low-energy neutrino detectors are likely needed if the measurement is to be made. | future work 0.93 | 0.16 | 0.07 | hedged possibility 1.00 |
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The paper
Original abstract
The effect of the higher-energy 2nd resonance and the associated adiabatic-to-nonadiabatic transition on neutrino propagation in solar matter is presented. For WIMP-annihilation neutrinos injected with energies in the "sweet region" between 300 MeV and 10 GeV at the Sun's center, a significant and revealing dependence on the neutrino mass hierarchy and the mixing angle theta_13 down to 0.5 degrees is found in the flavor ratios arriving at Earth. In addition, the amplification of flavor ratios in the sweet region allows a better discrimination among possible annihilation modes of the solar dark matter. Under mild assumptions on WIMP properties, it is estimated that 200 neutrino events in the sweet region would be required for inferences of theta_13, the mass hierarchy, and the dominant WIMP annihilation mode. Future large-volume, low-energy neutrino detectors are likely needed if the measurement is to be made.
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How the literature uses it
2 arXiv papers cite this in 2 sentences
Papers citing it
Cites it as background 2 papers
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Propagation of high energy neutrinos from dark matter annihilations in the Sun has been studies both analytically [ref] and numerically [ref] .
Non-standard interactions and neutrinos from dark matter annihilation in the Sun · Evolution of monochromatic WIMP neutrinos in the Sun and Earth · 0.98
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[ref] for recent work on this topic.
Neutrino signals from electroweak bremsstrahlung in solar WIMP annihilation · Introduction · 0.99
What it cites · 25 sentences without a confident label
Contests 1 paper
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The production flavor ratios $w_α(E)$ in the Sun's core and the terrestrial flavor ratios $W_α(E)$ for neutrinos are then related by [ref] :
Neutrino flavor ratios as diagnostic of solar WIMP annihilation · Preliminaries and overview · contest 0.82
Uses data or values from 5 papers
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For a $100$GeV WIMP mass, inspection of the theoretical neutrino spectra in Ref. [ref] suggests a value $∼20%$ for $f_ν$, the fraction of neutrino flux in the sweet region between 0.3 and $10$GeV.
Spectra of neutrinos from dark matter annihilations · (Anti)Neutrino flux from solar WIMP annihilation · 0.98
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The $3σ$ experimental uncertainties in the angles are [ref]
Phenomenology with Massive Neutrinos · Theoretical framework · 1.00
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For our present purposes, it is sufficient to employ the “tribimaximal” values [ref] for the two large mixing angles, i.e., to set $sin^2θ_23^TBM=1/2$ and $sin^2θ_12^TBM=1/3$.
Tri-Bimaximal Mixing and the Neutrino Oscillation Data · Theoretical framework · 0.91
Compares with 1 paper
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It is interesting to note that the bounds on the spin-dependent WIMP cross section inferred from these experimental neutrino-flux constraints are stronger than the bounds coming from direct searches for WIMPs [ref] .
A Search for WIMPs with the First Five-Tower Data from CDMS · (Anti)Neutrino flux from solar WIMP annihilation · 0.80
Cites as background 2 papers
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Some related references that study flavor issues for solar neutrinos arising from WIMP annihilation are listed in Ref. [ref] .
On the Oscillation of Neutrinos Produced by the Annihilation of Dark Matter inside the Sun · Preliminaries and overview · 1.00
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The effect has been well worked out in publications [ref] ; it is somewhat complicated (best addressed with a numerical code), and we will not include it in this paper.
Mass Hierarchy Determination via future Atmospheric Neutrino Detectors · Preliminaries and overview · 0.97
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