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Limits on light primordial black holes from high-scale leptogenesis

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arxiv 2305.13369 v2 pith:VOXNIIXA submitted 2023-05-22 hep-ph

Roberta Calabrese , Marco Chianese , Jacob Gunn , Gennaro Miele , Stefano Morisi , Ninetta Saviano This is my paper · ORCID
classification hep-ph
keywords primordialblackholeshigh-scaleleptogenesisasymmetryholelight
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abstract

We investigate the role that the evaporation of light primordial black holes may have played in the production of the baryon asymmetry of the Universe through the high-scale leptogenesis. In particular, for mass of primordial black hole in the range [$10^6$-$10^9$] g, we find a dilution of thermally generated lepton asymmetry via entropy injection in the primordial plasma after the sphaleron freeze-out. As a consequence, we can put strong constraints on the primordial black hole parameters, showing the mutual exclusion limits between primordial black holes and high-scale leptogenesis. Remarkably, we point out an interplay between the upper bound on the initial abundance of primordial black holes and the active neutrino mass scale.

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Cited by 4 Pith papers

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

  1. Baryogenesis via Asymmetric Evaporation of Primordial Black Holes

    hep-ph 2025-08 conditional novelty 6.0 of 10

    Evaporating primordial black holes, biased by a new gravitational interaction, can reproduce the observed baryon asymmetry once entropy dilution and chemical-potential-dependent emission are included.

  2. Primordial black hole induced gravitational waves in $f(R)$ gravity

    astro-ph.CO 2025-08 unverdicted novelty 6.0 of 10

    In R^(1+ε) gravity, exponential growth of scalar perturbations during a PBH-driven early matter era enhances the induced gravitational wave signal, with Ω_GW ∝ f on large scales.

  3. Page Time of Primordial Black Holes in the Standard Model and Beyond

    astro-ph.CO 2025-02 conditional novelty 6.0 of 10

    For Standard Model emission, a Schwarzschild primordial black hole of about 6.23 x 10^14 grams would reach its Page time at the current age of the Universe.

  4. New bounds on Memory Burdened Primordial Black Holes from Big Bang Nucleosynthesis

    astro-ph.CO 2025-06 reject novelty 4.0 of 10

    Memory-burdened primordial black holes lighter than 10^9 grams are newly constrained by Big Bang nucleosynthesis, with a residual unconstrained window around 1-100 grams for suppression index k=2.

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