NNLO Antenna Subtraction with One Hadronic Initial State

TL;DR

This paper extends the antenna subtraction method to NNLO calculations involving one hadronic initial state, improving precision in high-energy particle collision predictions.

Contribution

It introduces the extension of the antenna subtraction method to include initial states with one hadron at NNLO, detailing the subtraction terms and integration techniques.

Findings

Integrated antenna functions match known NNLO coefficient functions.

Reduction of integrals to master integrals simplifies calculations.

Method enhances NNLO accuracy for processes with initial-state hadrons.

Abstract

In this talk we present the extension of the antenna subtraction method to include initial states containing one hadron at NNLO. We sketch the requirements for the different necessary subtraction terms, and we explain how the antenna functions are integrated over the appropriate phase space by reducing the integrals to a small set of master integrals. Where applicable, our results for the integrated antennae were cross-checked against the known NNLO coefficient functions for deep inelastic scattering processes.