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

May 30, 2016
7 pages
Published in:
  • Phys.Lett.B 770 (2017) 507-513
  • Published: Jul 10, 2017
e-Print:
Report number:
  • CERN-TH-2016-122,
  • CP3-16-25,
  • IPPP-16-42,
  • MCNET-16-17,
  • SLAC-PUB-16528

Citations per year

2016201820202022202402468
Abstract: (Elsevier)
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.
Note:
  • LHC
  • Spin-two
  • QCD
  • new physics
  • CERN LHC Coll
  • p p: scattering
  • new particle: production
  • new particle: spin
  • spin: 2
  • new particle: decay