Journal article
Logarithmic accuracy of parton showers: A fixed-order study
- 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 NCand next-to-leading (single) logarithms at leading NC.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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(Preview, Version of record, pdf, 923.1KB, Terms of use)
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- Publisher copy:
- 10.1007/JHEP09(2018)033
Authors
- Publisher:
- Springer
- Journal:
- Journal of High Energy Physics More from this journal
- Volume:
- 2018
- Issue:
- 9
- Pages:
- 33
- Publication date:
- 2018-09-07
- Acceptance date:
- 2018-08-26
- DOI:
- ISSN:
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1029-8479
- Keywords:
- Pubs id:
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pubs:936104
- UUID:
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uuid:c8d943c9-f1fb-4418-97b4-996182312612
- Local pid:
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pubs:936104
- Source identifiers:
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936104
- Deposit date:
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2018-11-29
Terms of use
- Copyright holder:
- Dasgupta et al
- Copyright date:
- 2018
- Notes:
- © The Author(s) 2018. This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.
- Licence:
- CC Attribution (CC BY)
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