Angular profile of emission of non-zero spin fields from a higher-dimensional black hole

TL;DR

This paper investigates how the rotation of higher-dimensional black holes affects the angular distribution of Hawking radiation emitted by particles with non-zero spin, proposing a method to infer black hole angular momentum from emission patterns.

Contribution

It provides a detailed analysis of the angular emission profiles of spinning higher-dimensional black holes, linking emission shape to black hole angular momentum.

Findings

Angular distribution of emission depends on black hole spin.

Emission shape can serve as an indicator of black hole angular momentum.

Non-zero spin particles exhibit helicity-dependent emission patterns.

Abstract

Recent works have included the effect of rotation on simulations of black hole events at the LHC, showing that the angular momentum of the black hole cannot be ignored and it makes a non-trivial contribution for most of the lifetime of the black hole. A key consequence of the rotation of the black hole is that the Hawking radiation is no longer isotropic, making it more difficult to infer space-time parameters from measurements of the emitted particles. In this letter we study the angular distribution of the Hawking emission of non-zero spin particles with specific helicity on the brane. We argue that the shape of the distribution could be used as a measure of the angular momentum of the black hole.