Matching N3LO QCD calculations to parton showers
(2021) In Journal of High Energy Physics 2021(11).- Abstract
The search for new interactions and particles in high-energy collider physics relies on precise background predictions. This has led to many advances in combining precise fixed-order cross-section calculations with detailed event generator simulations. In recent years, fixed-order qcd calculations of inclusive cross sections at n3lo precision have emerged, followed by an impressive progress at producing differential results. Once differential results become publicly available, it would be prudent to embed these into event generators to allow the community to leverage these advances. This note offers some concrete thoughts on me+ps matching at third order in qcd. As a method for testing these thoughts, a toy calculation of... (More)
The search for new interactions and particles in high-energy collider physics relies on precise background predictions. This has led to many advances in combining precise fixed-order cross-section calculations with detailed event generator simulations. In recent years, fixed-order qcd calculations of inclusive cross sections at n3lo precision have emerged, followed by an impressive progress at producing differential results. Once differential results become publicly available, it would be prudent to embed these into event generators to allow the community to leverage these advances. This note offers some concrete thoughts on me+ps matching at third order in qcd. As a method for testing these thoughts, a toy calculation of e+e− → uu¯ at O(αs3) is constructed, and combined with an event generator through unitary matching. The toy implementation may serve also as blueprint for high-precision qcd predictions at future lepton colliders. As a byproduct of the n3lo matching formula, a new nnlo+ps formula for processes with “additional” jets is obtained.
(Less)
- author
- Prestel, Stefan LU
- organization
- publishing date
- 2021-11
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Perturbative QCD, Resummation
- in
- Journal of High Energy Physics
- volume
- 2021
- issue
- 11
- article number
- 41
- publisher
- Springer
- external identifiers
-
- scopus:85118973774
- ISSN
- 1029-8479
- DOI
- 10.1007/JHEP11(2021)041
- language
- English
- LU publication?
- yes
- additional info
- Publisher Copyright: © 2021, The Author(s).
- id
- 568950e9-de9b-4b12-8ba5-4ed21eddd722
- date added to LUP
- 2021-11-27 19:36:27
- date last changed
- 2024-04-20 16:39:17
@article{568950e9-de9b-4b12-8ba5-4ed21eddd722,
abstract = {{<p>The search for new interactions and particles in high-energy collider physics relies on precise background predictions. This has led to many advances in combining precise fixed-order cross-section calculations with detailed event generator simulations. In recent years, fixed-order qcd calculations of inclusive cross sections at n3lo precision have emerged, followed by an impressive progress at producing differential results. Once differential results become publicly available, it would be prudent to embed these into event generators to allow the community to leverage these advances. This note offers some concrete thoughts on me+ps matching at third order in qcd. As a method for testing these thoughts, a toy calculation of e<sup>+</sup>e<sup>−</sup> → uu¯ at O(αs3) is constructed, and combined with an event generator through unitary matching. The toy implementation may serve also as blueprint for high-precision qcd predictions at future lepton colliders. As a byproduct of the n3lo matching formula, a new nnlo+ps formula for processes with “additional” jets is obtained.</p>}},
author = {{Prestel, Stefan}},
issn = {{1029-8479}},
keywords = {{Perturbative QCD; Resummation}},
language = {{eng}},
number = {{11}},
publisher = {{Springer}},
series = {{Journal of High Energy Physics}},
title = {{Matching N3LO QCD calculations to parton showers}},
url = {{http://dx.doi.org/10.1007/JHEP11(2021)041}},
doi = {{10.1007/JHEP11(2021)041}},
volume = {{2021}},
year = {{2021}},
}