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Richard Corke, Torbjörn Sjöstrand
Interleaved Parton Showers and Tuning Prospects
Abstract
General-purpose Monte Carlo event generators have become important tools
in particle physics, allowing the simulation of exclusive hadronic final
states. In this article we examine the Pythia 8 generator, in particular
focusing on its parton-shower algorithms. Some relevant new additions to
the code are introduced, that should allow for a better description of
data. We also implement and compare with 2 to 3 real-emission QCD matrix
elements, to check how well the shower algorithm fills the phase space
away from the soft and collinear regions. A tuning of the generator to
Tevatron data is performed for two PDF sets and the impact of first new
LHC data is examined.
LU TP 10-26
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