Two-loop five-point all plus helicity Yang-Mills amplitude

TL;DR

This paper re-computes a complex two-loop five-point Yang-Mills amplitude using advanced techniques, revealing its underlying simplicity and providing insights into its structure.

Contribution

It introduces an augmented recursion approach to determine sub-leading poles in the amplitude calculation.

Findings

Successfully re-derived the amplitude with simplified structure

Demonstrated the effectiveness of augmented recursion methods

Enhanced understanding of amplitude's mathematical properties

Abstract

We re-compute the recently derived two-loop five-point all plus Yang-Mills amplitude using Unitarity and Recursion. Recursion requires augmented recursion to determine the sub-leading pole. Using these methods the simplicity of this amplitude is understood.