Geometric cross sections of rotating strings and black holes

TL;DR

This paper investigates the production cross section of highly excited rotating strings in high-energy collisions, revealing geometric behavior similar to black hole production, thus strengthening the string-black hole correspondence.

Contribution

It demonstrates that the cross section for rotating strings exhibits geometric features akin to black hole production, highlighting a new aspect of the string-black hole correspondence.

Findings

Cross section shows geometric behavior in specific angular momentum and impact parameter regions.

Similar geometric patterns are observed in black hole production cross sections.

Supports the correspondence between highly excited strings and black holes.

Abstract

We study the production cross section of a highly excited string with fixed angular momentum from an ultra-high energy collision of two light strings. We find that the cross section exhibits geometric behavior in a certain region of angular-momentum/impact-parameter space. This geometric behavior is common to the differential cross sections of a black hole production with fixed angular momentum and thus we see another correspondence between strings and black holes.