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

Das, Goutam; Degrande, Céline; Hirschi, Valentin; Maltoni, Fabio; Shao, Hua-Sheng

Abstract

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 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.

Citation

Das, G., Degrande, C., Hirschi, V., Maltoni, F., & Shao, H. (2017). NLO predictions for the production of a spin-two particle at the LHC. Physics Letters B, 770, 507-513. https://doi.org/10.1016/j.physletb.2017.05.007

• Journal Article Type: Article
• Acceptance Date: May 2, 2017
• Online Publication Date: May 8, 2017
• Publication Date: Jul 10, 2017
• Deposit Date: Jul 28, 2017
• Publicly Available Date: Jul 28, 2017
• Journal: Physics Letters B
• Print ISSN: 0370-2693
• Publisher: Elsevier
• Peer Reviewed: Peer Reviewed
• Volume: 770
• Pages: 507-513
• DOI: https://doi.org/10.1016/j.physletb.2017.05.007
• Public URL: https://durham-repository.worktribe.com/output/1372242