Gravitational energy loss in high energy particle collisions: ultrarelativistic plunge into a multidimensional black hole

TL;DR

This paper studies gravitational energy loss when a high-energy particle plunges into a higher-dimensional black hole, providing numerical results on emitted radiation and quasinormal modes relevant for TeV-scale black hole production.

Contribution

It offers the first detailed numerical analysis of gravitational radiation from ultrarelativistic infalls into multidimensional black holes, including energy spectra and quasinormal modes.

Findings

Quantified gravitational energy emission spectra and total energy loss.

Computed quasinormal modes for various perturbation types.

Discussed implications for black hole production at TeV energies.

Abstract

We investigate the gravitational energy emission of an ultrarelativistic particle radially falling into a D-dimensional black hole. We numerically integrate the equations describing black hole gravitational perturbations and obtain energy spectra, total energy and angular distribution of the emitted gravitational radiation. The black hole quasinormal modes for scalar, vector, and tensor perturbations are computed in the WKB approximation. We discuss our results in the context of black hole production at the TeV scale.