After a brief introduction to the Herwig7 multi-purpose event generator, I will discuss the necessary steps for implementing an angularly ordered (AO) electroweak (EW) parton shower in Herwig 7. This includes the calculation of the helicity-dependent EW branching functions that correspond to the full range of final-state EW parton shower, in addition to the initial-state EW gauge vector boson radiations. The results are successfully embedded in the AO Herwig 7 shower algorithm and have undergone a set of comprehensive and conclusive performance tests. Furthermore, I will showcase the use of this EW parton shower algorithm, alongside the existing QCD plus QED AO shower, to predict the angular distributions of W± bosons in LHC events with high transverse momentum jets. These results are compared against the explicitly generated underlying events as well as the existing ATLAS data to show the effectiveness of the newly implemented QCD plus QED plus EW AO parton shower scheme. This talk is based on an ongoing project Peter within the Herwig Project.
Zoom link: IPPP Seminars (Friday at 2 pm UK time)
Meeting ID: 994 2012 4988