Automated evaluation of electroweak Sudakov logarithms in Sherpa

TL;DR

This paper introduces an automated method within Sherpa for calculating electroweak Sudakov logarithms at one-loop level, crucial for precise predictions at high-energy colliders like the LHC and future colliders.

Contribution

It provides the first automated implementation of electroweak Sudakov logarithms in Sherpa, enabling efficient NLO electroweak correction calculations for complex processes.

Findings

Applied to W boson pair production, dijet production, and e+e- with jets.

First estimates of electroweak corrections at high multiplicity.

Demonstrated the importance of these logarithms at collider energies.

Abstract

We present an automated implementation for the calculation of one-loop double and single Sudakov logarithms stemming from electroweak radiative corrections within the Sherpa event generation framework, based on the derivation in[1]. At high energies, these logarithms constitute the leading contributions to the full NLO electroweak corrections. As examples, we show applications for relevant processes at both the LHC and future hadron colliders, namely on-shell W boson pair production, EW-induced dijet production and electron-positron production in association with four jets, providing the first estimate of EW corrections at this multiplicity.