https://doi.org/10.1140/epjc/s10052-016-4506-x
Regular Article - Theoretical Physics
Parton-shower uncertainties with Herwig 7: benchmarks at leading order
1
Department of Physics, IPPP, Durham University, Durham, UK
2
Particle Physics Group, School of Physics and Astronomy, University of Manchester, Manchester, UK
3
Institute for Theoretical Physics, Karlsruhe Institute of Technology, Karlsruhe, Germany
4
TH Department, CERN, Geneva, Switzerland
5
The Henryk Niewodniczanski Institute of Nuclear Physics in Cracow, Polish Academy of Sciences, Kraków, Poland
* e-mail: simon.platzer@durham.ac.uk
Received:
20
May
2016
Accepted:
11
November
2016
Published online:
2
December
2016
We perform a detailed study of the sources of perturbative uncertainty in parton-shower predictions within the Herwig 7 event generator. We benchmark two rather different parton-shower algorithms, based on angular-ordered and dipole-type evolution, against each other. We deliberately choose leading order plus parton shower as the benchmark setting to identify a controllable set of uncertainties. This will enable us to reliably assess improvements by higher-order contributions in a follow-up work.
© The Author(s), 2016
