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Higher-order QCD effects in the Higgs to ZZ search channel at the LHC

Frederix, Rikkert LU orcid and Grazzini, Massimiliano (2008) In Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics 662(4). p.353-359
Abstract

We present a consistent analysis of the signal as well as the irreducible background for the search of the SM Higgs boson in the ZZ decay channel at the LHC. Soft-gluons effects are resummed up to next-to-leading logarithmic accuracy, and the results are compared to those obtained with fixed order calculations and the MC@NLO event generator. The soft-gluon effects are typically modest but should be taken into account when precise predictions are demanded. Our results show that the signal over background ratio can be significantly enhanced with a cut on the transverse momentum pT Z Z of the ZZ pair. We also introduce a fully transverse angular variable that could give information about the... (More)

We present a consistent analysis of the signal as well as the irreducible background for the search of the SM Higgs boson in the ZZ decay channel at the LHC. Soft-gluons effects are resummed up to next-to-leading logarithmic accuracy, and the results are compared to those obtained with fixed order calculations and the MC@NLO event generator. The soft-gluon effects are typically modest but should be taken into account when precise predictions are demanded. Our results show that the signal over background ratio can be significantly enhanced with a cut on the transverse momentum pT Z Z of the ZZ pair. We also introduce a fully transverse angular variable that could give information about the CP nature of the Higgs boson.

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Please use this url to cite or link to this publication:
author
and
publishing date
type
Contribution to journal
publication status
published
subject
in
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
volume
662
issue
4
pages
7 pages
publisher
Elsevier
external identifiers
  • scopus:41949127856
ISSN
0370-2693
DOI
10.1016/j.physletb.2008.03.030
language
English
LU publication?
no
id
6df63d16-76cb-4ec7-afc4-927534349180
date added to LUP
2019-05-28 14:52:13
date last changed
2022-01-31 21:04:34
@article{6df63d16-76cb-4ec7-afc4-927534349180,
  abstract     = {{<p>We present a consistent analysis of the signal as well as the irreducible background for the search of the SM Higgs boson in the ZZ decay channel at the LHC. Soft-gluons effects are resummed up to next-to-leading logarithmic accuracy, and the results are compared to those obtained with fixed order calculations and the MC@NLO event generator. The soft-gluon effects are typically modest but should be taken into account when precise predictions are demanded. Our results show that the signal over background ratio can be significantly enhanced with a cut on the transverse momentum p<sub>T</sub>                            <sup>Z Z</sup> of the ZZ pair. We also introduce a fully transverse angular variable that could give information about the CP nature of the Higgs boson.</p>}},
  author       = {{Frederix, Rikkert and Grazzini, Massimiliano}},
  issn         = {{0370-2693}},
  language     = {{eng}},
  month        = {{05}},
  number       = {{4}},
  pages        = {{353--359}},
  publisher    = {{Elsevier}},
  series       = {{Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics}},
  title        = {{Higher-order QCD effects in the Higgs to ZZ search channel at the LHC}},
  url          = {{http://dx.doi.org/10.1016/j.physletb.2008.03.030}},
  doi          = {{10.1016/j.physletb.2008.03.030}},
  volume       = {{662}},
  year         = {{2008}},
}