Excluding a Generic Spin-2 Higgs Impostor
arXiv:1310.0151 · doi:10.1016/j.physletb.2013.10.064
Abstract
We argue that the current experimental data in conjunction with perturbative unitarity considerations exclude the possibility that the LHC 125-126 GeV resonance is a generic massive spin-2 particle of either parity. We analyse tree-level Z-spin-2 elastic scattering and demonstrate that perturbative unitarity breaks down at energies $Î\sim 600$ GeV. Furthermore, we find that W,Z-spin-2 interactions contribute to the electroweak oblique parameters in a way that is in gross disagreement with observations.
12 pp, 8 figures; V2: reference added; minor corrections to match published version