Speaker
Gideon Bella
(High Energy Physics Department)
Description
A detailed study of the di-boson Monte Carlo programs Pythia, MC@NLO and the program of Baur, Han and Ohnemus (BHO) is performed. None of these programs cover all aspects of di-boson production. The BHO code is used to produce event weights emulating anomalous triple gauge couplings in Pythia and MC@NLO events. In the same way, boson spin information which is missing for most di-boson channels in MC@NLO can be introduced as well. This weighting code can be used to study systematic effects related to various aspects of the Monte Carlo generators, e.g. parton distribution functions. A detailed study comparing distributions of event samples generated with these three generators shows a nice agreement for events without jets. Some differences between the three samples are observed for events with jets. Most of these differences can be attributed to the different ways of jet production in the three programs.
