Parton-shower uncertainties with Herwig 7: benchmarks at leading order

Johannes Bellm; Graeme Nail; Simon Plätzer; Peter Schichtel; Andrzej Siódmok

doi:10.1140/epjc/s10052-016-4506-x

Parton-shower uncertainties with Herwig 7: benchmarks at leading order

Johannes Bellm, Graeme Nail, Simon Plätzer, Peter Schichtel, Andrzej Siódmok

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Abstract

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.

Original language	English
Article number	665
Number of pages	19
Journal	European Physical Journal C
Volume	76
Issue number	12
DOIs	https://doi.org/10.1140/epjc/s10052-016-4506-x
Publication status	Published - 2 Dec 2016

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Cite this

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abstract = "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.",

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AU - Bellm, Johannes

AU - Nail, Graeme

AU - Plätzer, Simon

AU - Schichtel, Peter

AU - Siódmok, Andrzej

PY - 2016/12/2

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JO - European Physical Journal C

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Parton-shower uncertainties with Herwig 7: benchmarks at leading order

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