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

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

doi:10.1016/j.physletb.2017.05.007

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

Journal Article · Mon May 08 00:00:00 EDT 2017 · Physics Letters. B

DOI:https://doi.org/10.1016/j.physletb.2017.05.007· OSTI ID:1373119

^[1]; Degrande, Céline ^[2]; Hirschi, Valentin ^[3]; Maltoni, Fabio ^[4];

^[5]

Saha Inst. of Nuclear Physics, Kolkata (India). Theory Division
Durham Univ. (United Kingdom). Inst. for Particle Physics Phenomenology, Dept. of Physics
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Univ. Catholique de Louvain (Belgium). Centre for Cosmology, Particle Physics and Phenomenology (CP3)
European Organization for Nuclear Research (CERN), Geneva (Switzerland). Theoretical Physics Dept.

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. Here, 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.

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Research Organization:: SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: 291377; PITN-GA-2012-315877; PBELP2 146525; AC02-76SF00515

OSTI ID:: 1373119

Journal Information:: Physics Letters. B, Vol. 770, Issue C; ISSN 0370-2693

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 20 works

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