Neutrino Transition in Dark Matter

Chun, Eung Jin

doi:10.48550/arxiv.2112.05057

Cited by 5 publications

(8 citation statements)

References 28 publications

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“…There are numerous new physics scenarios affecting neutrino oscillations [12,13] including neutrino decay , Lorentz invariance violation and CPT violation [35][36][37][38][39][40][41][42][43][44][45][46][47][48][49][50], background dark matter fields [51][52][53][54][55][56][57][58][59][60][61][62][63][64], neutrino decoherence or wave-packet separation [65][66][67][68][69][70][71][72][73], unitary violation [74][75][76], non-standard neutrino interactions (NSI) [5,[77][78][79][80]…”

Section: New Physics Scenariosmentioning

confidence: 99%

How to identify different new neutrino oscillation physics scenarios at DUNE

Denton

Giarnetti

Meloni

2023

J. High Energ. Phys.

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Next generation neutrino oscillation experiments are expected to measure the remaining oscillation parameters with very good precision. They will have unprecedented capabilities to search for new physics that modify oscillations. DUNE, with its broad band beam, good particle identification, and relatively high energies will provide an excellent environment to search for new physics. If deviations from the standard three-flavor oscillation picture are seen however, it is crucial to know which new physics scenario is found so that it can be verified elsewhere and theoretically understood. We investigate several benchmark new physics scenarios by looking at existing long-baseline accelerator neutrino data from NOvA and T2K and determine at what sensitivity DUNE can differentiate among them. We consider sterile neutrinos and both vector and scalar non-standard neutrino interactions, all with new complex phases, the latter of which could conceivably provide absolute neutrino mass scale information. We find that, in many interesting cases, DUNE will have good model discrimination. We also perform a new fit to NOvA and T2K data with scalar NSI.

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Section: New Physics Scenariosmentioning

confidence: 99%

How to identify different new neutrino oscillation physics scenarios at DUNE

Denton

Giarnetti

Meloni

2023

J. High Energ. Phys.

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“…If mediator is light, the 1/E dependence of the potential shows up at low observable energies. This opens up a possibility to substitute, to some extent, the vacuum mass term in the Hamiltonian by the energy-dependent potential [5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Refractive neutrino masses, ultralight dark matter and cosmology

Sen,

Smirnov

2024

J. Cosmol. Astropart. Phys.

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We consider in detail a possibility that the observed neutrino oscillations are due to refraction on ultralight scalar boson dark matter. We introduce the refractive mass squared, m̃2, and study its properties: dependence on neutrino energy, state of the background, etc. If the background is in a state of cold gas of particles, m̃2 shows a resonance dependence on energy. Above the resonance (E ≫ ER ), we find that m̃2 has the same properties as usual vacuum mass squared. Below the resonance, m̃2 decreases with energy, which (if realised) allows to avoid the cosmological bound on the sum of neutrino masses. Also, m̃2 may depend on time. We consider the validity of the results: effects of multiple interactions with scalars, and modification of the dispersion relation. We show that for values of parameters of the system required to reproduce the observed neutrino masses, perturbativity is broken at low energies, which border above the resonance. If the background is in the state of coherent classical field, the refractive mass does not depend on energy explicitly but may show time dependence. It coincides with the refractive mass in a cold gas at high energies. Refractive nature of neutrino mass can be tested by searches of its dependence on energy and time.

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“…The ULDM is expected to behave as a macroscopic classical field with a background value oscillating with time, which if coupled to Standard Model (SM) particles, results in "time varying constants of nature" [6][7][8]. We are interested in the possibility that the ULDM field couples to neutrinos, thus affecting their masses and mixing [9][10][11][12][13][14][15][16], and in the implications these couplings would have for neutrino oscillations experiments.…”

Section: Introductionmentioning

confidence: 99%

Parametric resonance in neutrino oscillations induced by ultra-light dark matter and implications for KamLAND and JUNO

Losada

Nir

Pérez

et al. 2023

J. High Energ. Phys.

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If Ultra-light dark matter (ULDM) exists and couples to neutrinos, the neutrino oscillation probability might be significantly altered by a parametric resonance. This resonance can occur if the typical frequency of neutrino flavor-oscillations ∆m2/(2E), where ∆m2 is the mass-squared difference of the neutrinos and E is the neutrino energy, matches the oscillation frequency of the ULDM field, determined by its mass, mϕ. The resonance could lead to observable effects even if the ULDM coupling is very small, and even if its typical oscillation period, given by τϕ = 2π/mϕ, is much shorter than the experimental temporal resolution. Defining a small parameter ϵϕ to be the ratio between the contribution of the ULDM field to the neutrino mass and the vacuum value of the neutrino mass, the impact of the resonance is particularly significant if ϵϕmϕL ≳ 4, where L is the distance between the neutrino source and the detector. An outlier in the data collected by the KamLAND experiment which, until now, has been assumed to constitute a statistical fluctuation, or associated with the binning, can actually be explained by such narrow parametric resonance, without affecting the measurements of other current neutrino oscillation experiments. This scenario will be tested by the JUNO experiment.

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Neutrino Transition in Dark Matter

Cited by 5 publications

References 28 publications

How to identify different new neutrino oscillation physics scenarios at DUNE

How to identify different new neutrino oscillation physics scenarios at DUNE

Refractive neutrino masses, ultralight dark matter and cosmology

Parametric resonance in neutrino oscillations induced by ultra-light dark matter and implications for KamLAND and JUNO

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