NNLO antenna subtraction with two hadronic initial states

TL;DR

This paper extends the antenna subtraction method to handle processes with two initial-state hadrons at NNLO, detailing the construction, phase space transformations, and integration of subtraction terms.

Contribution

It introduces initial-initial antennae for NNLO calculations, advancing the subtraction method for hadron collider processes.

Findings

Construction of initial-initial antennae detailed

Phase space transformations for subtraction implemented

Integration of subtraction terms discussed

Abstract

We discuss the extension of the antenna subtraction method to include two hadrons in the initial state (initial-initial antennae) at next-to-next-to-leading order. We sketch the construction of the subtraction terms and the required phase space transformations. We discuss the integration of the subtraction terms in detail.