Multiple Partonic Interaction Developments in Herwig++
Abstract
We briefly review the status of the multiple partonic interaction model in the Herwig++ event generator. First, we show how a change in the colour structure of an event in Herwig++ results in a significant improvement in the description of soft inclusive observables in pp interactions at s=900 GeV. Then we present a comparison of some model results to ATLAS Underlying Event data at s=7 TeV.
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