Eur. Phys. J. C (2016) 76: 39
https://doi.org/10.1140/epjc/s10052-015-3871-1

Regular Article - Theoretical Physics

Merging weak and QCD showers with matrix elements

¹ Department of Astronomy and Theoretical Physics, Lund University, 22362, Lund, Sweden
² SLAC National Accelerator Laboratory, Menlo Park, CA, 94025, USA

^* e-mail: prestel@slac.stanford.edu

Received: 9 November 2015
Accepted: 26 December 2015
Published online: 22 January 2016

Abstract

We present a consistent way of combining associated weak boson radiation in hard dijet events with hard QCD radiation in Drell–Yan-like scatterings. This integrates multiple tree-level calculations with vastly different cross sections, QCD- and electroweak parton-shower resummation into a single framework. The new merging strategy is implemented in the Pythia event generator and predictions are confronted with LHC data. Improvements over the previous strategy are observed. Results of the new electroweak-improved merging at a future 100 TeV proton collider are also investigated.