Automated evaluation of electroweak Sudakov logarithms in SHERPA

  title={Automated evaluation of electroweak Sudakov logarithms in SHERPA},
  author={Enrico Bothmann and Davide Napoletano},
  journal={arXiv: High Energy Physics - Phenomenology},
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… 

Four lepton production and the accuracy of QED FSR

We scrutinise the ability of the primary QED final-state resummation tools, combined with electroweak virtual corrections, to reproduce the exact next-to-leading order electroweak calculation in the

On the W&Y interpretation of high-energy Drell-Yan measurements

High-energy neutral and charged Drell--Yan differential cross-section measurements are powerful probes of quark-lepton contact interactions that produce growing-with-energy effects. This paper

Reducing negative weights in Monte Carlo event generation with Sherpa

An increase in theoretical precision of Monte Carlo event generators is typically accompanied by an increased need for computational resources. One major obstacle are negative weighted events, which

Higher-order EW corrections in ZZ and ZZj production at the LHC

Abstract We consider the production of a pair of Z bosons at the LHC and study the inclusion of EW corrections in theoretical predictions at fixed order and based on multijet-merged parton-shower

Les Houches 2021: Physics at TeV Colliders: Report on the Standard Model Precision Wishlist

Les Houches activities in 2021 were truncated due to the lack of an in-person component. However, given the rapid progress in the field, and the restart of the LHC, we wanted to continue the

Muon Collider Physics Summary

The perspective of designing muon colliders with high energy and luminosity, which is being investigated by the International Muon Collider Collaboration, has triggered a growing interest in their

One-loop electroweak Sudakov logarithms: a revisitation and automation

This work revisits the algorithm of Denner and Pozzorini for the calculation of one-loop electroweak Sudakov logarithms and extends it to NLO EW corrections to squared matrix-elements that involve also QCD corrections on top of subleading LO terms and proposes a new approach in which the QED component is consistently removed.

Interleaved resonance decays and electroweak radiation in the Vincia parton shower

We propose a framework for high-energy interactions in which resonance decays and electroweak branching processes are interleaved with the QCD evolution in a single common sequence of decreasing

Vector boson scattering processes: Status and prospects

Interleaved Resonance Decays and Electroweak Radiation in Vincia

We propose a framework for high-energy interactions in which resonance decays and electroweak branching processes are interleaved with the QCD evolution in a single common sequence of decreasing



Electroweak Sudakov corrections to new physics searches at the LHC.

It is shown that the Sudakov corrections to the relevant observables can grow up to -40% at sqrt[s ]= 14 TeV for the standard selection cuts used by the ATLAS and CMS Collaborations, and the contribution due to undetected real radiation of massive gauge bosons is included.

Electroweak-correction effects in gauge-boson pair production at the CERN LHC

We have studied the eect of one-loop logarithmic electroweak radiative corrections on WZ and W production processes at the LHC. We present analytical results for the leading-logarithmic electroweak

The complete NLO corrections to dijet hadroproduction

A bstractWe study the production of jets in hadronic collisions, by computing all contributions proportional to αSnαm, with n + m = 2 and n + m = 3. These correspond to leading and next-to-leading

Electroweak corrections to W-boson pair production at the LHC

A bstractVector-boson pair production ranks among the most important Standard-Model benchmark processes at the LHC, not only in view of on-going Higgs analyses. These processes may also help to gain

Two-loop electroweak corrections at high energies

One-loop leading logarithms in electroweak radiative corrections

Abstract. We present results for the complete one-loop electroweak logarithmic corrections for general processes at high energies and fixed angles. Our results are applicable to arbitrary matrix

Full NLO corrections to 3-jet production and R32 at the LHC

We present the evaluation of the complete set of NLO corrections to three-jet production at the LHC. To this end we consider all contributions of O(αn s α m) with n + m = 3 and n + m = 4. This

Implementation of electroweak corrections in the POWHEG BOX: single W production

A bstractWe present a fully consistent implementation of electroweak and strong radiative corrections to single W hadroproduction in the POWHEG BOX framework, treating soft and collinear photon

An automated subtraction of NLO EW infrared divergences

  • M. Schönherr
  • Physics
    The European physical journal. C, Particles and fields
  • 2018
The implementation of the formulated subtraction scheme in the framework of the Sherpa Monte-Carlo event generator, including the restriction of the dipole phase space through the α-parameters and expanding its existing subtraction for NLO QCD calculations, is detailed and numerous internal consistency checks validating the obtained results are presented.