Article Dans Une Revue Physical Review Letters Année : 2025

Ultrahigh-Energy Particle Collisions and Heavy Dark Matter at Phase Transitions

Résumé

We initiate the study of “bubbletrons,” by which we mean ultrahigh-energy collisions of the particle shells that generically form at the walls of relativistic bubbles in cosmological first-order phase transitions (PT). As an application, we calculate the maximal dark matter mass MDM that bubbletrons can produce in a U(1) gauge PT, finding MDM∼105/1011/1015  GeV for PT scales vϕ∼10-2/103/109  GeV. Bubbletrons realize a novel link between ultrahigh-energy phenomena and gravitational waves sourced at the PT, from nanohertz to megahertz frequencies.

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hal-04953915 , version 1 (02-06-2025)

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Iason Baldes, Maximilian Dichtl, Yann Gouttenoire, Filippo Sala. Ultrahigh-Energy Particle Collisions and Heavy Dark Matter at Phase Transitions. Physical Review Letters, 2025, 134 (6), pp.061001. ⟨10.1103/PhysRevLett.134.061001⟩. ⟨hal-04953915⟩
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