Parton Showers, Event Generators and Resummation 2018

Session

PS and R

6 Jun 2018, 11:30

Lundmarksalen (Department of Theoretical Physics and Astronomy, Lund University)

40. Jets and threshold summation in Deductor

Davison Soper (University of Oregon)

06/06/2018, 11:30

I use the shower generator Deductor to explore the effects of threshold summation and out of cone energy on the one jet cross section. I also examine the two jet cross section with a rapidity gap.

32. Merging High Energy with Soft and Collinear Logarithms using HEJ and PYTHIA

Helen Brooks (IPPP/Durham University)

06/06/2018, 11:55

Abstract We present a method to combine the all-order treatment of the High Energy Jets exclusive partonic Monte Carlo (HEJ) with the parton shower of Pythia8, while retaining the logarithmic accuracy of both. This procedure enables the generation of fully realistic and hadronised events with HEJ. Furthermore, the combination of the two all-order treatments leads to improvements in the quality...

41. Comparing parton showers and NLL resummation

Daniel Reichelt

06/06/2018, 12:20

A systematic study of differences between NLL resummation and parton showers is presented. While large logarithms arising from the IR structure of QCD can be resummed to higher logarithmic accuracy for specific observables, numerical calculations based on parton showers are formally correct to LL only. However, they incorporate additional effects like local momentum conservation, which are...