Black Hole Evaporation Beyond the Standard Model of Particle Physics

Abstract

The observation of an evaporating black hole would provide definitive information on the elementary particles present in nature. In particular, it could discover or exclude particles beyond those present in the standard model of particle physics. We consider a wide range of motivated scenarios beyond the standard model and identify those which would be best probed in the event of an observation. For those models we define representative benchmark parameters and characterise the photon spectra as a function of time. For the supersymmetric benchmark model, where most of the new particles produce secondary photons, we provide secondary spectra and discuss the subtle interplay between faster black hole evaporation and an increased flux of secondary photons. Finally, we discuss the impact of these models on future experimental analysis strategies.

Asymptotically‐Flat Black Hole Solutions in Symmergent Gravity

“…But, irrespective of their nature, they can contribute to the Hawking radiation and affect the evaporation rate of the black hole. To be definitive, the Hawking emission rate of any particle species i is given by [133][134][135][136][137]…”

Determining the spin of light primordial black holes with Hawking radiation

“…In this article, we therefore study the full Hawking photon spectra of PBHs with temperatures roughly between 10 MeV and 200 GeV, corresponding to PBH masses from 10 12 kg down to 5 × 10 7 kg, respectively, which are significantly evaporating today but are sufficiently cold for us to ignore any contributions from potential new particles with masses above the electroweak scale (see e.g. [54,55] for the effects of new heavy particles on PBH evaporation). We will also ignore photons from ALP decays, since string axions typically have large decay constants (above the GUT scale) and therefore very long lifetimes/small decay rates.…”