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Impact of the Recoil Scheme on the Accuracy of Angular-Ordered Parton Showers

arXiv:1912.05640
IPPP/19/92
MCnet-19-26
Frascati Phys.Ser. 70 (2019)

by: Ferrario Ravasio, Silvia (Durham U., IPPP) et al.

Abstract:
In these proceedings we present three possible interpretations of the ordering variable implemented in the Herwig7 angular-ordered parton shower. Each interpretation determines a different recoil-scheme prescription and we show how it can impact the logarithmic accuracy of the algorithm. We also present comparisons with LEP data.

Resampling Algorithms for High Energy Physics Simulations

arXiv:1912.02436
LU-TP 19-54
UWTHPH-2019-12
MCnet-19-25

by: Olsson, Jimmy (Royal Inst. Tech., Stockholm) et al.

Abstract:
We demonstrate that the method of interleaved resampling in the context of parton showers can tremendously improve the statistical convergence of weighted parton shower evolution algorithms. We illustrate this by several examples showing significant statistical improvement.