Dark Spinors Hawking Radiation in String Theory Black Holes

TL;DR

This paper derives the Hawking radiation spectrum for Kerr-Sen black holes considering dark spinors, showing that black holes can emit particles beyond the standard model, supporting the universality of black hole radiation.

Contribution

It introduces the tunnelling method for dark spinor particles in Kerr-Sen black holes, extending Hawking radiation analysis beyond standard model particles.

Findings

Dark spinors can tunnel across black hole horizons, contributing to Hawking radiation.

Black hole radiation spectrum includes particles beyond the standard model.

Supports the universality of Hawking radiation for all particle types.

Abstract

The Hawking radiation spectrum of Kerr-Sen axion-dilaton black holes is derived, in the context of dark spinors tunnelling across the horizon. Since a black hole has a well defined temperature, it should radiate in principle all the standard model particles, similar to a black body at that temperature. We investigate the tunnelling of mass dimension one spin-1/2 dark fermions, that are beyond the standard model and are prime candidates to the dark matter. Their interactions with the standard model matter and gauge fields are suppressed by at least one power of unification scale, being restricted just to the Higgs field and to the graviton likewise. The tunnelling method for the emission and absorption of mass dimension one particles across the event horizon of Kerr-Sen axion-dilaton black holes is shown here to provide further evidence for the universality of black hole radiation, further encompassing particles beyond the standard model.