Standard Model Baryon Number Violation Seeded by Black Holes

Abstract

We show that black holes with a Schwarzschild radius of the order of the electroweak scale may act as seeds for the baryon number violation within the Standard model via sphaleron transitions. The corresponding rate is faster than the one in the pure vacuum and baryon number violation around black holes can take place during the evolution of the universe after the electroweak phase transition. We show however that this does not pose any threat for a pre-existing baryon asymmetry in the universe.

arXiv comment6 pages, 2 figures. v2: matching published version

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• Black hole induced false vacuum decay from first principles
• Limits on light primordial black holes from high-scale leptogenesis
• Light burden of memory: Constraining primordial black holes with high-energy neutrinos
• Black Hole Production of Monopoles in the Early Universe
• Impact of memory-burdened black holes on primordial gravitational waves in light of Pulsar Timing Array
• High-energy gamma-ray emission from memory-burdened primordial black holes
• Black Holes and Baryon Number Violation: Unveiling the Origins of Early Galaxies and the Low-Mass Gap
• Search for the baryon number and lepton number violating decays ${\tau }^{-}\to \Lambda {\pi }^{-}$ and ${\tau }^{-}\to \bar{\Lambda }{\pi }^{-}$ at Belle II