How difficult it would be to detect cosmic neutrino background?

Vogel, P.

doi:10.1063/1.4915587

Cited by 15 publications

(16 citation statements)

References 28 publications

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“…Directly measuring the CNB remains extremely challenging [62][63][64]. Those ideas based on the electroweak potential on electrons caused by the cosmic neutrino sea [65], an O(G F ) effect, depend on the net lepton number in neutrinos which today we know cannot be large as explained earlier and also would be washed out in the limit of nonrelativistic neutrinos.…”

Section: Detection Perspectivesmentioning

confidence: 99%

Grand Unified Neutrino Spectrum at Earth: Sources and Spectral Components

Vitagliano,

Tamborra,

Raffelt

2019

Preprint

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We briefly review the dominant neutrino fluxes at Earth from different sources and present the Grand Unified Neutrino Spectrum ranging from meV to PeV energies. For each energy band and source, we discuss both theoretical expectations and experimental data. This compact review should be useful as a brief reference to those interested in neutrino astronomy, fundamental particle physics, dark-matter detection, high-energy astrophysics, geophysics, and other related topics.

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Section: Detection Perspectivesmentioning

confidence: 99%

Grand Unified Neutrino Spectrum at Earth: Sources and Spectral Components

Vitagliano,

Tamborra,

Raffelt

2019

Preprint

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“…Capturing relic neutrinos is not only rewarding from the point of view of what we can learn about neutrino properties, but also because it would be a further confirmation of the standard Big Bang cosmological model. Different ideas on how to achieve such a detection have been proposed [552][553][554][555][556][557][558][559][560][561][562][563], ranging from absorption dips in the ultra-high-energy (UHE) neutrino fluxes due to their annihilation with relic neutrinos at the Z boson resonance, to forces generated by coherent scattering of the relic bath on a pendulum and measured by laser interferometers. Most of these proposed methods are impractical from the experimental point of view.…”

Section: G Prospects From Relic Neutrino Direct Detectionmentioning

confidence: 99%

Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects

Salas

Gariazzo

Mena

et al. 2018

Front. Astron. Space Sci.

194

197

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The ordering of the neutrino masses is a crucial input for a deep understanding of flavor physics, and its determination may provide the key to establish the relationship among the lepton masses and mixings and their analogous properties in the quark sector. The extraction of the neutrino mass ordering is a data-driven field expected to evolve very rapidly in the next decade. In this review, we both analyze the present status and describe the physics of subsequent prospects. Firstly, the different current available tools to measure the neutrino mass ordering are described. Namely, reactor, long-baseline (accelerator and atmospheric) neutrino beams, laboratory searches for beta and neutrinoless double beta decays and observations of the cosmic background radiation and the large scale structure of the universe are carefully reviewed. Secondly, the results from an up-to-date comprehensive global fit are reported: the Bayesian analysis to the 2018 publicly available oscillation and cosmological data sets provides strong evidence for the normal neutrino mass ordering versus the inverted scenario, with a significance of 3.5 standard deviations. This preference for the normal neutrino mass ordering is mostly due to neutrino oscillation measurements. Finally, we shall also emphasize the future perspectives for unveiling the neutrino mass ordering. In this regard, apart from describing the expectations from the aforementioned probes, we also focus on those arising from alternative and novel methods, as 21 cm cosmology, core-collapse supernova neutrinos and the direct detection of relic neutrinos.10 Here, σ 8 corresponds to the normalization of the matter power spectrum on scales of 8h −1 Mpc, see Equation (13). 11 The thermal SZ thermal effect consists on a spectral distortion on CMB photons which arrive along the line of sight of a cluster.

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“…We now calculate the acceleration of a test mass due to momentum transfer by the neutral scattering of relic neutrinos. This idea has already been discussed by several authors [23,24,[35][36][37][38][39][40][41][42], however, there remains some disagreement in the scaling of this effect with the relic neutrino mass and temperature which we will attempt to resolve here. We will work in the flavour basis, noting that the weak eigenstate masses and number densities are related to those in the mass basis by m να "…”

Section: Coherent Neutrino Scatteringmentioning

confidence: 75%

Updated detection prospects for relic neutrinos using coherent scattering

Shergold

2021

Preprint

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We review the existing proposals to detect relic neutrinos using the coherent scattering of a neutrino wind on a test mass. By considering the transformation of the neutrino momentum between reference frames, we demonstrate that the induced acceleration scales with the square of the neutrino mass for unclustered neutrinos, contrary to the existing literature. In addition, we show that there is a large contribution to this effect from coherent neutrino-electron scattering, which can exceed the neutrino-nucleus component by nearly an order of magnitude. Unfortunately, we find that even with this enhancement there are no existing experiments or proposals capable of detecting relic neutrinos using this method.

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How difficult it would be to detect cosmic neutrino background?

Cited by 15 publications

References 28 publications

Grand Unified Neutrino Spectrum at Earth: Sources and Spectral Components

Grand Unified Neutrino Spectrum at Earth: Sources and Spectral Components

Neutrino Mass Ordering from Oscillations and Beyond: 2018 Status and Future Prospects

Updated detection prospects for relic neutrinos using coherent scattering

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