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NLO predictions for the production of a spin-two particle at the LHC

We obtain predictions accurate at the next-to-leading order in QCD for the production of a generic spin-two particle in the most relevant channels at the LHC: production in association with coloured particles (inclusive, one jet, two jets and $t\bar t$), with vector bosons ($Z,W^\pm,\gamma$) and wit...

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Detalles Bibliográficos
Autores principales: Das, Goutam, Degrande, Celine, Hirschi, Valentin, Maltoni, Fabio, Shao, Hua-Sheng
Lenguaje:eng
Publicado: 2016
Materias:
Acceso en línea:https://dx.doi.org/10.1016/j.physletb.2017.05.007
http://cds.cern.ch/record/2156812
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author Das, Goutam
Degrande, Celine
Hirschi, Valentin
Maltoni, Fabio
Shao, Hua-Sheng
author_facet Das, Goutam
Degrande, Celine
Hirschi, Valentin
Maltoni, Fabio
Shao, Hua-Sheng
author_sort Das, Goutam
collection CERN
description We obtain predictions accurate at the next-to-leading order in QCD for the production of a generic spin-two particle in the most relevant channels at the LHC: production in association with coloured particles (inclusive, one jet, two jets and $t\bar t$), with vector bosons ($Z,W^\pm,\gamma$) and with the Higgs boson. We present total and differential cross sections as well as branching ratios as a function of the mass and the collision energy also considering the case of non-universal couplings to standard model particles. We find that the next-to-leading order corrections give rise to sizeable $K$ factors for many channels, in some cases exposing the unitarity-violating behaviour of non-universal couplings scenarios, and in general greatly reduce the theoretical uncertainties. Our predictions are publicly available in the MadGraph5\_aMC@NLO framework and can, therefore, be directly used in experimental simulations of spin-two particle production for arbitrary values of the mass and couplings.
id cern-2156812
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2016
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spelling cern-21568122022-08-10T12:31:18Zdoi:10.1016/j.physletb.2017.05.007http://cds.cern.ch/record/2156812engDas, GoutamDegrande, CelineHirschi, ValentinMaltoni, FabioShao, Hua-ShengNLO predictions for the production of a spin-two particle at the LHChep-exParticle Physics - Experimenthep-phParticle Physics - PhenomenologyWe obtain predictions accurate at the next-to-leading order in QCD for the production of a generic spin-two particle in the most relevant channels at the LHC: production in association with coloured particles (inclusive, one jet, two jets and $t\bar t$), with vector bosons ($Z,W^\pm,\gamma$) and with the Higgs boson. We present total and differential cross sections as well as branching ratios as a function of the mass and the collision energy also considering the case of non-universal couplings to standard model particles. We find that the next-to-leading order corrections give rise to sizeable $K$ factors for many channels, in some cases exposing the unitarity-violating behaviour of non-universal couplings scenarios, and in general greatly reduce the theoretical uncertainties. Our predictions are publicly available in the MadGraph5\_aMC@NLO framework and can, therefore, be directly used in experimental simulations of spin-two particle production for arbitrary values of the mass and couplings.We obtain predictions accurate at the next-to-leading order in QCD for the production of a generic spin-two particle in the most relevant channels at the LHC: production in association with coloured particles (inclusive, one jet, two jets and tt¯ ), with vector bosons ( Z,W±,γ ) and with the Higgs boson. We present total and differential cross sections as well as branching ratios as a function of the mass and the collision energy also considering the case of non-universal couplings to standard model particles. We find that the next-to-leading order corrections give rise to sizeable K factors for many channels, in some cases exposing the unitarity-violating behaviour of non-universal couplings scenarios, and in general greatly reduce the theoretical uncertainties. Our predictions are publicly available in the MadGraph 5_a MC@NLO framework and can, therefore, be directly used in experimental simulations of spin-two particle production for arbitrary values of the mass and couplings.CERN-TH-2016-122CP3-16-25IPPP-16-42MCNET-16-17SLAC-PUB-16528arXiv:1605.09359oai:cds.cern.ch:21568122016-05-30
spellingShingle hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
Das, Goutam
Degrande, Celine
Hirschi, Valentin
Maltoni, Fabio
Shao, Hua-Sheng
NLO predictions for the production of a spin-two particle at the LHC
title NLO predictions for the production of a spin-two particle at the LHC
title_full NLO predictions for the production of a spin-two particle at the LHC
title_fullStr NLO predictions for the production of a spin-two particle at the LHC
title_full_unstemmed NLO predictions for the production of a spin-two particle at the LHC
title_short NLO predictions for the production of a spin-two particle at the LHC
title_sort nlo predictions for the production of a spin-two particle at the lhc
topic hep-ex
Particle Physics - Experiment
hep-ph
Particle Physics - Phenomenology
url https://dx.doi.org/10.1016/j.physletb.2017.05.007
http://cds.cern.ch/record/2156812
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