Sterile neutrino dark matter production in presence of nonstandard neutrino self-interactions: An EFT approach

Benso, Cristina; Rodejohann, Werner; Sen, Manibrata; Ujjayini, Ramachandran, Aaroodd

doi:10.1103/physrevd.105.055016

Cited by 15 publications

(9 citation statements)

References 45 publications

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“…From a flavor point of view, it is important to appreciate that the most stringent bounds exist in the electron and the muon sector, with substantially weaker bounds for tau-neutrinos. Self-interactions of active neutrinos have also been shown to assist in successful production of sterile neutrino dark matter, alleviating astrophysical bounds arising from unobservation of X-rays [6,9,[35][36][37][38].…”

Section: Introductionmentioning

confidence: 99%

Neutrino secret self-interactions: a booster shot for the cosmic neutrino background

Das¹,

Perez-Gonzalez²,

Sen³

2022

Preprint

Self Cite

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Neutrinos might interact among themselves through forces that have so far remained hidden. Throughout the history of the Universe, such secret interactions could lead to scatterings between the neutrinos from supernova explosions and the non-relativistic relic neutrinos left over from the Big Bang. Such scatterings can boost the cosmic neutrino background (CνB) to energies of O(MeV), making it, in principle, observable in experiments searching for the diffuse supernova neutrino background. Assuming a model-independent four-Fermi interaction, we determine the upscattered cosmic neutrino flux, and derive constraints on such secret interactions from the latest results from Super-Kamiokande. Furthermore, we also study prospects for detection of the boosted flux in future lead-based coherent elastic neutrino-nucleus scattering experiments.

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Section: Introductionmentioning

confidence: 99%

Neutrino secret self-interactions: a booster shot for the cosmic neutrino background

Das¹,

Perez-Gonzalez²,

Sen³

2022

Preprint

Self Cite

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“…As a consequence, a lot of alternative production mechanisms have been considered, involving resonant production in the presence of a large lepton asymmetry [5], scalar decay [6][7][8][9][10][11], new interactions of the SM neutrinos [12][13][14][15], an extended gauge sector [16][17][18], or interactions between the sterile neutrino and a new scalar [19][20][21].…”

Section: Introductionmentioning

confidence: 99%

Curing Sterile Neutrino Dark Matter with a Dark Force

Kersten¹

2022

Proceedings of Neutrino Oscillation Workshop — PoS(NOW2022)

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We propose a novel mechanism to generate sterile neutrinos 𝜈 𝑠 in the early Universe, by converting ordinary neutrinos 𝜈 𝑎 in scattering processes 𝜈 𝑠 𝜈 𝑎 → 𝜈 𝑠 𝜈 𝑠 . After initial production by oscillations, this leads to an exponential growth in the 𝜈 𝑠 abundance. We show that such a production regime naturally occurs for self-interacting 𝜈 𝑠 , and that this opens up significant new parameter space where 𝜈 𝑠 make up all of the observed dark matter.

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“…As the self-interactions between neutrinos are theoretically possible, they have also been explored to analyse the possibility of KeV-sterile neutrino as a viable WDM candidate by proposing modified Dodelson-Widrow (DW) mechanism induced through non-standard neutrino self interactions [22][23][24]. The standard DW mechanism allows the production of sterile neutrino DM for an appropriate values of active-sterile neutrino mixing angle [25] and around KeV-scale mass.…”

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confidence: 99%

“…As relic abundance produced through standard DW mechanism can be recasted into the parameter space of m νs − sin 2 2θ, it has been shown that the entire parameter space of m νs − sin 2 2θ consistent with sterile neutrino DM has been ruled out by X-Ray observations and the observation of 3.5 KeV X-Ray line [28][29][30][31][32][33][34][35][36][37]. However, it has been discussed in [22][23][24] that the DW mechanism can be modified by taking into account the production of active neutrinos through self-interaction. Interestingly, the modified version of the same would allow the right value of relic abundance of KeV-sterile neutrino for the range of active-sterile neutrino mixing angle yet unconstrained by X-Ray observations [22][23][24].…”

mentioning

confidence: 99%

“…However, it has been discussed in [22][23][24] that the DW mechanism can be modified by taking into account the production of active neutrinos through self-interaction. Interestingly, the modified version of the same would allow the right value of relic abundance of KeV-sterile neutrino for the range of active-sterile neutrino mixing angle yet unconstrained by X-Ray observations [22][23][24]. Another interesting approach to avoid X-Ray bounds without considering neutrino non-standard self-interactions is studied in [38].…”

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confidence: 99%

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Synergy Between Hubble Tension Motivated Self-Interacting Neutrino and KeV-Sterile Neutrino Dark Matter

Dhuria¹,

Abinas²

2023

Preprint

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The discrepancy between the value of Hubble constant measured by CMB observations and local low-redshift based observations has proposed many solutions which require the existence of Physics beyond Standard Model (SM). One of the interesting solutions is based on considering the strong self-interaction between Standard Model (SM) neutrinos through an additional scalar/vector mediator. Interestingly, the strong self-interaction between SM neutrinos also play an important role in obtaining KeV-sterile neutrino as a viable Dark Matter (DM) candidate through the famous Dodelson-Widrow mechanism. In this work, we have tried to find the synergy between the parameter space of active-sterile neutrino mixing vs mass of sterile neutrino allowed by Hubble tension solution and the requirement of getting KeV-sterile neutrino as DM candidate. Interestingly, we get a large amount of parameter space that is consistent with both the requirements and also free from X-Ray constraints. Finally, we have embedded this scenario in a consistent supersymmetric model of particle physics. In this framework, we have shown that the value of sterile neutrino mass, SM neutrino mass and the required mixing angle can be naturally obtained by considering the supersymmetry breaking scale to be around O(10) TeV. Thus, it would give an interesting testing ground for supersymmetry as well as signatures of Warm Dark Matter (WDM).

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Sterile neutrino dark matter production in presence of nonstandard neutrino self-interactions: An EFT approach

Cited by 15 publications

References 45 publications

Neutrino secret self-interactions: a booster shot for the cosmic neutrino background

Neutrino secret self-interactions: a booster shot for the cosmic neutrino background

Curing Sterile Neutrino Dark Matter with a Dark Force

Synergy Between Hubble Tension Motivated Self-Interacting Neutrino and KeV-Sterile Neutrino Dark Matter

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