Skip to main content

Lund University Publications

LUND UNIVERSITY LIBRARIES

Merging meets matching in MC@NLO

Frederix, Rikkert LU orcid and Frixione, Stefano (2012) In Journal of High Energy Physics 2012(12).
Abstract

The next-to-leading order accuracy for MC@NLO results exclusive in J light jets is achieved if the computation is based on matrix elements that feature J and J + 1 QCD partons. The simultaneous prediction of observables which are exclusive in different light-jet multiplicities cannot simply be obtained by summing the above results over the relevant range in J; rather, a suitable merging procedure must be defined. We address the problem of such a merging, and propose a solution that can be easily incorporated into existing MC@NLO implementations. We use the automated aMC@NLO framework to illustrate how the method works in practice, by considering the production at the 8 TeV LHC of a Standard Model Higgs in association with up to J = 2... (More)

The next-to-leading order accuracy for MC@NLO results exclusive in J light jets is achieved if the computation is based on matrix elements that feature J and J + 1 QCD partons. The simultaneous prediction of observables which are exclusive in different light-jet multiplicities cannot simply be obtained by summing the above results over the relevant range in J; rather, a suitable merging procedure must be defined. We address the problem of such a merging, and propose a solution that can be easily incorporated into existing MC@NLO implementations. We use the automated aMC@NLO framework to illustrate how the method works in practice, by considering the production at the 8 TeV LHC of a Standard Model Higgs in association with up to J = 2 jets, and of an e + νe pair or a tt̄ pair in association with up to J = 1 jet.

(Less)
Please use this url to cite or link to this publication:
author
and
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Monte Carlo Simulations, NLO Computations
in
Journal of High Energy Physics
volume
2012
issue
12
article number
061
publisher
Springer
external identifiers
  • scopus:84876213005
ISSN
1029-8479
DOI
10.1007/JHEP12(2012)061
language
English
LU publication?
no
id
7578849b-7152-4952-a32f-a864a3087475
date added to LUP
2019-05-28 15:24:10
date last changed
2025-04-04 15:03:12
@article{7578849b-7152-4952-a32f-a864a3087475,
  abstract     = {{<p>The next-to-leading order accuracy for MC@NLO results exclusive in J light jets is achieved if the computation is based on matrix elements that feature J and J + 1 QCD partons. The simultaneous prediction of observables which are exclusive in different light-jet multiplicities cannot simply be obtained by summing the above results over the relevant range in J; rather, a suitable merging procedure must be defined. We address the problem of such a merging, and propose a solution that can be easily incorporated into existing MC@NLO implementations. We use the automated aMC@NLO framework to illustrate how the method works in practice, by considering the production at the 8 TeV LHC of a Standard Model Higgs in association with up to J = 2 jets, and of an e <sup>+</sup> ν<sub>e</sub> pair or a tt̄ pair in association with up to J = 1 jet.</p>}},
  author       = {{Frederix, Rikkert and Frixione, Stefano}},
  issn         = {{1029-8479}},
  keywords     = {{Monte Carlo Simulations; NLO Computations}},
  language     = {{eng}},
  number       = {{12}},
  publisher    = {{Springer}},
  series       = {{Journal of High Energy Physics}},
  title        = {{Merging meets matching in MC@NLO}},
  url          = {{http://dx.doi.org/10.1007/JHEP12(2012)061}},
  doi          = {{10.1007/JHEP12(2012)061}},
  volume       = {{2012}},
  year         = {{2012}},
}