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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...
Autores principales: | , , , , |
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Lenguaje: | eng |
Publicado: |
2016
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Materias: | |
Acceso en línea: | https://dx.doi.org/10.1016/j.physletb.2017.05.007 http://cds.cern.ch/record/2156812 |
_version_ | 1780950696101675008 |
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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 |
record_format | invenio |
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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