Affect of brane thickness on microscopic tidal-charged black holes

TL;DR

This paper explores how the thickness of the brane affects the lifetime and growth of microscopic tidal-charged black holes, with implications for their detectability and energy signatures in experiments.

Contribution

It introduces the dependence of black hole properties on brane thickness and analyzes the resulting phenomenological consequences for black hole evaporation and growth.

Findings

Longer black hole lifetimes with increased brane thickness

Potential for black holes to escape detectors and Earth

TeV-scale black holes cannot grow via Bondi accretion

Abstract

We study the phenomenological implications stemming from the dependence of the tidal charge on the brane thickness $L$ for the evaporation and decay of microscopic black holes. In general, the larger $L$, the longer are the black hole life-times and the greater their maximum mass for those cases in which the black hole can grow. In particular, we again find that tidal-charged black holes might live long enough to escape the detectors and even the gravitational field of the Earth, thus resulting in large amounts of missing energy. However, under no circumstances could TeV-scale black holes grow enough to enter the regime of Bondi accretion.