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Search for sterile neutrinos at reactors
High Energy Physics - Phenomenology · Submitted 24 Jul 2011
abstract compiled · 2026-09-23 · no language-model review
The authors' main claim On the other hand, in the case of an experimental fast neutron reactor Joyo, because of its small size, sensitivity to $\sin^22\theta_{14}$ can be as good as 0.03 for $\Delta m^2 \sim$ several eV$^2$ with the Bugey-like detector setup.
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The abstract, sentence by sentence
The sensitivity to the sterile neutrino mixing at very short baseline reactor neutrino experiments is investigated. In the case of conventional (thermal neutron) reactors it is found that the sensitivity is lost for $\Delta m^2 \gtrsim$ 1 eV$^2$ due to smearing of the reactor core size. On the other hand, in the case of an experimental fast neutron reactor Joyo, because of its small size, sensitivity to $\sin^22\theta_{14}$ can be as good as 0.03 for $\Delta m^2 \sim$ several eV$^2$ with the Bugey-like detector setup.
background contribution method result interpretation main claim
| # | sentence | role | the authors' own work | states the main conclusion | strength |
|---|---|---|---|---|---|
| s0 | The sensitivity to the sterile neutrino mixing at very short baseline reactor neutrino experiments is investigated. | contribution 0.96 | 0.58 | 0.06 | asserted 0.55 |
| s1 | In the case of conventional (thermal neutron) reactors it is found that the sensitivity is lost for $\Delta m^2 \gtrsim$ 1 eV$^2$ due to smearing of the reactor core size. | result 0.93 | 0.82 | 0.17 | asserted 1.00 |
| s2 | On the other hand, in the case of an experimental fast neutron reactor Joyo, because of its small size, sensitivity to $\sin^22\theta_{14}$ can be as good as 0.03 for $\Delta m^2 \sim$ several eV$^2$ with the Bugey-like detector setup. | result 1.00 | 0.75 | 0.64 | asserted 0.55 |
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The paper
Original abstract
The sensitivity to the sterile neutrino mixing at very short baseline reactor neutrino experiments is investigated. In the case of conventional (thermal neutron) reactors it is found that the sensitivity is lost for $\Delta m^2 \gtrsim$ 1 eV$^2$ due to smearing of the reactor core size. On the other hand, in the case of an experimental fast neutron reactor Joyo, because of its small size, sensitivity to $\sin^22\theta_{14}$ can be as good as 0.03 for $\Delta m^2 \sim$ several eV$^2$ with the Bugey-like detector setup.
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How the literature uses it
4 arXiv papers cite this in 5 sentences
Papers citing it · 4 sentences without a confident label
Uses its method or tool 1 paper
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To evaluate the sensitivity to $sin^22θ_14$, let us introduce the following $χ^2$ which was adopted in Ref. [ref] (See Ref. [ref] for details): [equation] $χ^2$ stands for a quantity which expresses how much deviation we have between the numbers of events with and without oscillations, compared with the experimental errors.
Search for sterile neutrinos at reactors with a small core · Sensitivity to $sin^22θ_14$ by a spectral analysis · 1.00
What it cites · 33 sentences without a confident label
Uses the method or tool of 2 papers
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To evaluate the sensitivity to $sin^22θ_14$, we introduce the following $χ^2$ which was adopted in Ref. [ref] : [equation] Here, $m^A_i$ is the number of events to be measured at the near ($A=N$) and far ($A=F$) for the $i$-th energy bin with the neutrino oscillation[ As we will see below, in the spectrum analysis, unlike in the rate one, it is not necessary for the near detector to have events without oscillation, since the dominant term in $χ^2$ looks at the difference between the maximum and minimum of the oscillation pattern.
A formula for the sensitivity to sin^2{2theta_13} in reactor experiments with a spectral analysis · Sensitivity to $sin^22θ_14$ by a spectral analysis · 1.00
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By choosing the bins in such a way that $t^A_i=t^A$, Eq. ([ref]) becomes [equation] Let us redefine the variables [equation] and let us introduce a vector notation [equation] Following the discussions in the Appendix A in [ref] , the matrix element of the covariance matrix can be obtained as the expectation value of $y^A_i y^B_j$: [equation] where the normalization $N$ is defined in such a way that $⟨1 ⟩=1$.
Systematic limits on sin^2{2theta_{13}} in neutrino oscillation experiments with multi-reactors · Derivation of the covariance matrix · 0.92
Uses data or values from 1 paper
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Since the best fit value obtained in Ref. [ref] is $Δm^2_41 ∼2$eV$^2$, an experiment using an experimental fast neutron reactor offers a promising possibility.
The Reactor Antineutrino Anomaly · Discussion and Conclusion · 0.84
Cites as background 10 papers
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Since the LSND group announced the anomaly which suggests neutrino oscillations with mass squared difference of $O$(1) eV$^2$ [ref] , schemes with sterile neutrinos have attracted a lot of attention.
Evidence for Neutrino Oscillations from the Observation of Electron Anti-neutrinos in a Muon Anti-Neutrino Beam · Introduction · 0.80
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Since the LSND group announced the anomaly which suggests neutrino oscillations with mass squared difference of $O$(1) eV$^2$ [ref] , schemes with sterile neutrinos have attracted a lot of attention.
Evidence for $\bar\nu_\mu\to\bar\nu_e$ Oscillations from the LSND Experiment at LAMPF · Introduction · 0.80
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Since the LSND group announced the anomaly which suggests neutrino oscillations with mass squared difference of $O$(1) eV$^2$ [ref] , schemes with sterile neutrinos have attracted a lot of attention.
Evidence for nu_mu -> nu_e Neutrino Oscillations from LSND · Introduction · 0.80
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