Theoretical survey of tidal-charged black holes at the LHC

TL;DR

This paper provides a theoretical analysis of tidal-charged black holes in brane-world models, constraining their parameters and studying their evolution to assess potential risks and signatures at the LHC.

Contribution

It offers a comprehensive theoretical survey of black hole solutions in brane-world scenarios, including parameter constraints and numerical evolution predictions.

Findings

Black holes do not reach hazardous accretion regimes.

Black holes could escape detectors and Earth's gravity, leading to missing energy signatures.

Long-lived black holes might escape the LHC environment.

Abstract

We analyse a family of brane-world black holes which solve the effective four-dimensional Einstein equations for a wide range of parameters related to the unknown bulk/brane physics. We first constrain the parameters using known experimental bounds and, for the allowed cases, perform a numerical analysis of their time evolution, which includes accretion through the Earth. The study is aimed at predicting the typical behavior one can expect if such black holes were produced at the LHC. Most notably, we find that, under no circumstances, would the black holes reach the (hazardous) regime of Bondi accretion. Nonetheless, the possibility remains that black holes live long enough to escape from the accelerator (and even from the Earth's gravitational field) and result in missing energy from the detectors.