Pseudo-Dirac Neutrinos, a Challenge for Neutrino Telescopes

Dan Hooper; John F. Beacom; John G. Learned; Nicole F. Bell; Sandip Pakvasa; Thomas J. Weiler

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Pseudo-Dirac Neutrinos, a Challenge for Neutrino Telescopes

John F. Beacom, Nicole F. Bell, Dan Hooper, John G. Learned, Sandip Pakvasa, Thomas J. Weiler

High Energy Physics - Phenomenology · Submitted 10 Jul 2003

abstract compiled · 2026-09-23 · no language-model review

The authors' main claim However, it may be possible to distinguish pseudo-Dirac from Dirac neutrinos using high-energy astrophysical neutrinos.

how it is stated · hedged possibility 1.00 read the record →

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arXiv IDhep-ph/0307151 (version 2)

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CitationDan Hooper, John F. Beacom, John G. Learned, Nicole F. Bell, Sandip Pakvasa, Thomas J. Weiler. "Pseudo-Dirac Neutrinos, a Challenge for Neutrino Telescopes." arXiv:hep-ph/0307151 (2003). https://pith.science/paper/NJDWCADS

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What the abstract itself states, as probabilities: claims first 0.03 · states limitation 0.21 · human participants 0.02 · controlled comparison 0.17 · randomized assignment 0.01 · states quantitative result 0.95 · compares with prior results 0.61 · mentions code or data availability 0.01.

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Neutrinos may be pseudo-Dirac states, such that each generation is actually composed of two maximally-mixed Majorana neutrinos separated by a tiny mass difference. The usual active neutrino oscillation phenomenology would be unaltered if the pseudo-Dirac splittings are $\delta m^2 \alt 10^{-12}$ eV$^2$; in addition, neutrinoless double beta decay would be highly suppressed. However, it may be possible to distinguish pseudo-Dirac from Dirac neutrinos using high-energy astrophysical neutrinos. By measuring flavor ratios as a function of $L/E$, mass-squared differences down to $\delta m^2 \sim 10^{-18}$ eV$^2$ can be reached. We comment on the possibility of probing cosmological parameters with neutrinos.

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#	sentence	role	the authors' own work	states the main conclusion	strength
s0	Neutrinos may be pseudo-Dirac states, such that each generation is actually composed of two maximally-mixed Majorana neutrinos separated by a tiny mass difference.	background 0.99	0.07	0.07	hedged possibility 1.00
s1	The usual active neutrino oscillation phenomenology would be unaltered if the pseudo-Dirac splittings are $\delta m^2 \alt 10^{-12}$ eV$^2$; in addition, neutrinoless double beta decay would be highly suppressed.	background 0.81	0.15	0.08	asserted 0.75
s2	However, it may be possible to distinguish pseudo-Dirac from Dirac neutrinos using high-energy astrophysical neutrinos.	contribution 0.59	0.10	0.40	hedged possibility 1.00
s3	By measuring flavor ratios as a function of $L/E$, mass-squared differences down to $\delta m^2 \sim 10^{-18}$ eV$^2$ can be reached.	result 0.83	0.44	0.57	asserted 0.77
s4	We comment on the possibility of probing cosmological parameters with neutrinos.	future work 0.86	0.26	0.05	hedged possibility 0.55

What kind of paper the classifier reports this is: theoretical result 0.58 · evidence from argument 0.69.

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Original abstract

Neutrinos may be pseudo-Dirac states, such that each generation is actually composed of two maximally-mixed Majorana neutrinos separated by a tiny mass difference. The usual active neutrino oscillation phenomenology would be unaltered if the pseudo-Dirac splittings are $\delta m^2 \alt 10^{-12}$ eV$^2$; in addition, neutrinoless double beta decay would be highly suppressed. However, it may be possible to distinguish pseudo-Dirac from Dirac neutrinos using high-energy astrophysical neutrinos. By measuring flavor ratios as a function of $L/E$, mass-squared differences down to $\delta m^2 \sim 10^{-18}$ eV$^2$ can be reached. We comment on the possibility of probing cosmological parameters with neutrinos.

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How the literature uses it

62 arXiv papers cite this in 88 sentences

Each citing sentence is taken from the citing paper's LaTeX source and typed by Pith's classifier. A label appears at probability 0.8 or more (0.95 for support), a contest at 0.7 or more; the quoted words are the citing authors'. How each label was checked · JSON

Papers citing it · 61 sentences without a confident label

Contests it 1 paper

This assertion was taken to be true by others [ref] , yet we want to stress that this claim is not correct, as can be seen from the eqs.

Quasi Dirac neutrino oscillations · Introduction · contest 0.79

Uses its data or values 1 paper

The disappearance bounds of muons come from long-baseline experiments [ref] and atmospheric experiments [ref] , $Δm^2 ≲10^-4 eV^2$ and $sin^22θ≥10^-2$.

Boomerang mechanism explaining the excess radio background · Appendix: Boomerang mechanism versus neutrino oscillation constraints · 0.92

Compares with it 1 paper

This technique has the advantage over prior proposals, see, e.g., Refs. [ref] , in that it is within experimental capabilities and mitigates the astrophysical source modeling uncertainties by correlating neutrino observations from different sources at the same $L/E$.

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Cites it as support 1 paper

This is why pseudo-Dirac splittings far below any laboratory sensitivity remain accessible over astrophysical baselines [ref] .

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Cites it as background 23 papers

Typical new physics includes the energy-dependent leptonic mixing matrix [ref] , neutrino-decay [ref] , non-unitary mixing [ref] , pseudo-Dirac neutrinos [ref] , neutrino secret interactions [ref] , etc [ref] .

The Nonsymmetric Flavor Transition Matrix and the Apparent P violation · Introduction · 0.93
Recent observed astrophysical neutrino events in the TeV-PeV energy range [ref] provide a probe to explore new physics such as Lorentz invariance violation [ref] , neutrino decay [ref] , pseudo-Dirac neutrinos [ref] , non-unitary leptonic mixing matrix [ref] , non-standard interaction (NSI) [ref] .

Influences of non-standard interactions on PeV neutrino events with and without a $L_{\alpha}-L_{\beta}$ symmetry · Introduction · 0.85
The flavor composition of the high energy cosmic neutrino flux has been extensively studied by many people [ref] , since the possibility of flavor tagging of high energy neutrinos was advanced in Ref. [ref] .

Signatures of sterile neutrino mixing in high-energy cosmic neutrino flux · Introduction · 0.97

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