Pair Production of small Black Holes in Heterotic String Theories

TL;DR

This paper investigates the pair production of small BPS black holes in heterotic string theories, calculating tree-level amplitudes and cross sections, and discusses implications for models with extra dimensions and more general black hole types.

Contribution

It provides the first detailed computation of pair production amplitudes for small BPS black holes in heterotic string frameworks, including energy and angular distribution analysis.

Findings

Computed tree-level amplitudes for black hole pair production

Analyzed energy and angular distributions of the process

Discussed implications for models with large extra dimensions

Abstract

We study pair production of small BPS BH's in heterotic strings compactified on tori and in the FHSV model. After recalling the identification of small BH's in the perturbative BPS spectrum, we compute the tree-level amplitudes for processes initiated by massless vector bosons or gravitons. We then analyze the resulting cross sections in terms of energy and angular distributions. Finally, we briefly comment on scenari with large extra dimensions and on generalizations of our results to non-BPS, non-extremal and rotating BH's.