Aachen 2019 – scientific programme

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T: Fachverband Teilchenphysik

T 70: QCD (Experiment)

T 70.5: Talk

Wednesday, March 27, 2019, 17:00–17:15, H10

Tuning studies of the Pythia8 generator using LEP and LHC data — •Thea Engler, Andrea Knue, and Gregor Herten — University of Freiburg, Institute of Physics

For the simulation of particle physics processes in high energy physics, Monte Carlo (MC) generators are heavily used. The different parton shower and hadronisation models have parameters which cannot be deduced from first principles, but which can be varied in a well-defined range in order to find the best values to describe the data distributions well (MC tuning). The tuning step is done by varying several parameters, performing an interpolation for each bin of the distribution and comparing the simulated distributions to data. This is done with the Professor framework. In this talk a tune of the Pythia8 generator using data from both the LEP and the LHC experiments is presented. The focus lies on the tuning of the hadronisation model.