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Non-Standard Models, Solar Neutrinos, and Large \theta_{13}
High Energy Physics - Phenomenology · Submitted 24 May 2013
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim We conclude that the data in this critical region is still too poor to determine whether any of these models, or LMA, is the best description of the data.
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The abstract, sentence by sentence
Solar neutrino experiments have yet to see directly the transition region between matter-enhanced and vacuum oscillations. The transition region is particularly sensitive to models of non-standard neutrino interactions and propagation. We examine several such non-standard models, which predict a lower-energy transition region and a flatter survival probability for the ^{8}B solar neutrinos than the standard large-mixing angle (LMA) model. We find that while some of the non-standard models provide a better fit to the solar neutrino data set, the large measured value of \theta_{13} and the size of the experimental uncertainties lead to a low statistical significance for these fits. We have also examined whether simple changes to the solar density profile can lead to a flatter ^{8}B survival probability than the LMA prediction, but find that this is not the case for reasonable changes. We conclude that the data in this critical region is still too poor to determine whether any of these models, or LMA, is the best description of the data.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | Solar neutrino experiments have yet to see directly the transition region between matter-enhanced and vacuum oscillations. | gap 0.75 | 0.07 | 0.02 | asserted 0.98 |
| s1 | The transition region is particularly sensitive to models of non-standard neutrino interactions and propagation. | background 0.99 | 0.06 | 0.02 | asserted 1.00 |
| s2 | We examine several such non-standard models, which predict a lower-energy transition region and a flatter survival probability for the ^{8}B solar neutrinos than the standard large-mixing angle (LMA) model. | contribution 0.87 | 0.44 | 0.04 | asserted 0.96 |
| s3 | We find that while some of the non-standard models provide a better fit to the solar neutrino data set, the large measured value of \theta_{13} and the size of the experimental uncertainties lead to a low statistical significance for these fits. | result 0.96 | 0.96 | 0.17 | asserted 1.00 |
| s4 | We have also examined whether simple changes to the solar density profile can lead to a flatter ^{8}B survival probability than the LMA prediction, but find that this is not the case for reasonable changes. | result 0.90 | 0.96 | 0.03 | asserted 1.00 |
| s5 | We conclude that the data in this critical region is still too poor to determine whether any of these models, or LMA, is the best description of the data. | interpretation 0.85 | 0.75 | 0.95 | asserted 0.99 |
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The paper
Original abstract
Solar neutrino experiments have yet to see directly the transition region between matter-enhanced and vacuum oscillations. The transition region is particularly sensitive to models of non-standard neutrino interactions and propagation. We examine several such non-standard models, which predict a lower-energy transition region and a flatter survival probability for the ^{8}B solar neutrinos than the standard large-mixing angle (LMA) model. We find that while some of the non-standard models provide a better fit to the solar neutrino data set, the large measured value of \theta_{13} and the size of the experimental uncertainties lead to a low statistical significance for these fits. We have also examined whether simple changes to the solar density profile can lead to a flatter ^{8}B survival probability than the LMA prediction, but find that this is not the case for reasonable changes. We conclude that the data in this critical region is still too poor to determine whether any of these models, or LMA, is the best description of the data.
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References
How the literature uses it
7 arXiv papers cite this in 7 sentences
Papers citing it · 5 sentences without a confident label
Uses its method or tool 1 paper
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The assumed Standard Solar Model (SSM) is the BS05OP model, and survival probabilities are calculated using [ref] .
Theia: An advanced optical neutrino detector · CNO neutrino flux · 0.93
Cites it as background 1 paper
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And finally, the sensitivity of atmospheric [ref] and solar data [ref] to NSI has been extensively studied as well.
A COHERENT Search Strategy for Beyond Standard Model Neutrino Interactions · Introduction · 0.91
What it cites · 6 sentences without a confident label
Uses the method or tool of 2 papers
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To test a given oscillation hypothesis against the SNO survival probability, we use the prescription described in Refs. [ref] and [ref] .
Combined Analysis of all Three Phases of Solar Neutrino Data from the Sudbury Neutrino Observatory · Data Sets and Approach · 0.94
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For the day-night effect we use the procedure described in Ref. [ref] , modeling the Earth as two spherical shells of constant density.
A simple analytic three-flavour description of the day-night effect in the solar neutrino flux · Data Sets and Approach · 1.00
Uses data or values from 2 papers
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For the dominant $θ_12$ and $Δm^2_21$ parameters we use constraints from KamLAND [ref] , and constrain $θ_13$ by the results of the Daya Bay [ref] and RENO [ref] collaborations.
Observation of Reactor Electron Antineutrino Disappearance in the RENO Experiment · Data Sets and Approach · 1.00
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For the `realtime' experiments, which measure exclusive fluxes, we include the most recent SNO results [ref] for $^8$B, the measurements of S-K I [ref] , S-K II [ref] , and S-K III [ref] (which are also $^8$B), and the measurements of Borexino for $^7$Be [ref] , $^8$B [ref] , and $pep$ [ref] .
Combined Analysis of all Three Phases of Solar Neutrino Data from the Sudbury Neutrino Observatory · Data Sets and Approach · 1.00
Cites as background 2 papers
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While many future experiments [ref] are planned to terrestrially observe matter-enhanced oscillations, and thus look for non-standard effects, to date the only large observed matter enhancement is for solar neutrinos.
Letter of Intent: The Hyper-Kamiokande Experiment --- Detector Design and Physics Potential --- · Introduction · 0.91
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While many future experiments [ref] are planned to terrestrially observe matter-enhanced oscillations, and thus look for non-standard effects, to date the only large observed matter enhancement is for solar neutrinos.
The 2010 Interim Report of the Long-Baseline Neutrino Experiment Collaboration Physics Working Groups · Introduction · 0.91
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