All-Order Corrections and Multi-Jet Rates

TL;DR

This paper presents an all-order theoretical framework for describing multi-jet processes at hadron colliders, focusing on t-channel singularities and their role in radiative corrections, with illustrative examples of scattering processes.

Contribution

It introduces a novel all-order approximation method based on t-channel singularities for multi-jet processes at hadron colliders.

Findings

All non-suppressed helicity amplitudes at tree level are dominated by t-channel poles.

The all-order approximation captures key features of radiative corrections in multi-jet events.

Similarities between qQ and qg scattering processes are demonstrated.

Abstract

We discuss results from a recently proposed all-order description of hard, radiative corrections to certain multi-jet processes at hadron colliders. The description is based on obtaining an all-order estimate of the t-channel singularities of scattering amplitudes. As a simple example, we illustrate the similarities between qQ and qg-scattering. In particular, we discuss how at tree-level, all non-suppressed helicity-amplitudes for these processes consist of a pure t-channel pole. This structure is used in the construction of all-order approximations.