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Interleaved parton showers and tuning prospects

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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 → 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.

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  1. Theoretical High Energy Physics, Department of Astronomy and Theoretical Physics, Lund University, Sölvegatan 14A, S-223 62, Lund, Sweden

    Richard Corke & Torbjörn Sjöstrand

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  1. Richard Corke
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Corke, R., Sjöstrand, T. Interleaved parton showers and tuning prospects. J. High Energ. Phys. 2011, 32 (2011). https://doi.org/10.1007/JHEP03(2011)032

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