The Underlying Event in Herwig++

Abstract

We review the modelling of multiple interactions in the event generator Herwig++ and study implications of recent tuning efforts to LHC data. A crucial ingredient to a successful description of minimum-bias and underlying-event observables is a model for colour reconnection. Improvements to this model, inspired by statistical physics, are presented.

4 pages, 3 figures. Contribution to the DIS 2012 proceedings

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• PYTHIA 6.2 Physics and Manual
• A Brief Introduction to PYTHIA 8.1
• Event generation with SHERPA 1.1
• Herwig++ Physics and Manual
• Multiparton Interactions in Photoproduction at HERA
• Charged-particle multiplicities in pp interactions measured with the ATLAS detector at the LHC
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• Soft Interactions in Herwig