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Sensitivity floor for primordial black holes with neutrino searches

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arxiv 2312.06108 v2 pith:MJR2THHA submitted 2023-12-11 hep-ph astro-ph.COastro-ph.HE

Qishan Liu , Kenny C. Y. Ng This is my paper · ORCID
classification hep-phastro-ph.COastro-ph.HE
keywords neutrinopbhsabovebackgroundblackconstraintsdetectorsdsnb
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

Primordial black holes~(PBHs) formed in the early Universe are well-motivated dark matter~(DM) candidates over a wide range of masses. These PBHs could emit detectable signals in the form of photons, electrons, and neutrinos through Hawking radiation. We consider the null observations of astrophysical $\bar{\nu}_{e}$ flux from several neutrino detectors and set new constraints on the PBHs as the dominant DM component to be above $6.4\times10^{15}\,{\rm g}$. We also estimate the expected constraints with JUNO for the prospects in the near future. Lastly, we note that the diffuse supernova neutrino background~(DSNB) is an unavoidable isotropic background. We thus estimate the sensitivity floor for PBH parameter space due to the DSNB and show that it is challenging for neutrino detectors to identify PBHs as they constitute 100\% of the DM above a mass of 9$\times10^{15}$g.

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Cited by 2 Pith papers

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score. Full citation record

  1. Probing Memory-Burdened Primordial Black Holes with High-Energy Neutrinos

    hep-ph 2026-08 conditional novelty 6.0 of 10

    For memory-burdened primordial black holes, a log-normal mass function can produce neutrino abundance limits several orders of magnitude stronger than a monochromatic population with the same median mass, with current...

  2. Searching for Dark Matter with MeVCube

    hep-ph 2025-01 conditional novelty 4.0 of 10

    Using Fisher forecasting, the author shows that a 2U to 12U MeVCube CubeSat could probe new dark matter parameter space for evaporating primordial black holes and MeV-scale decaying or annihilating dark matter.

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