Dasgupta, M;
Dreyer, FA;
Hamilton, K;
Monni, PF;
Salam, GP;
(2018)
Logarithmic accuracy of parton showers: a fixed-order study.
Journal of High Energy Physics
(9)
, Article 33. 10.1007/JHEP09(2018)033.
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Abstract
We formulate some first fundamental elements of an approach for assessing the logarithmic accuracy of parton-shower algorithms based on two broad criteria: their ability to reproduce the singularity structure of multi-parton matrix elements, and their ability to reproduce logarithmic resummation results. We illustrate our approach by considering properties of two transverse-momentum ordered final-state showers, examining features up to second order in the strong coupling. In particular we identify regions where they fail to reproduce the known singular limits of matrix elements. The characteristics of the shower that are responsible for this also affect the logarithmic resummation accuracies of the shower, both in terms of leading (double) logarithms at subleading N_{C} and next-to-leading (single) logarithms at leading N_{C}.
| Type: | Article |
|---|---|
| Title: | Logarithmic accuracy of parton showers: a fixed-order study |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1007/JHEP09(2018)033 |
| Publisher version: | https://doi.org/10.1007/JHEP09(2018)033 |
| Language: | English |
| Additional information: | © The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/). |
| Keywords: | NLO Computations, QCD Phenomenology |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > Dept of Physics and Astronomy |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10054884 |
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