Jet vetoing and Herwig++
arXiv:1103.4811 · doi:10.1007/JHEP01(2012)078
Abstract
We investigate the simulation of events with gaps between jets with a veto on additional radiation in the gap in Herwig++. We discover that the currently-used random treatment of radiation in the parton shower is generating some unphysical behaviour for wide-angle gluon emission in QCD 2 to 2 scatterings. We explore this behaviour quantitatively by making the same assumptions as the parton shower in the analytical calculation. We then modify the parton shower algorithm in order to correct the simulation of QCD radiation.
18 pages, 11 figures
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- A theoretical study of top-mass measurements at the LHC using NLO+PS generators of increasing accuracy
- W and Z bosons in association with two jets using the POWHEG method
- Probing higher-order corrections in dijet production at the LHC
- Effects of subleading color in a parton shower
- Herwig++ 2.6 Release Note
- Top-mass observables: all-orders behaviour, renormalons and NLO + Parton Shower effects