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arXiv · 1211.3068

Prima Facie Evidence against Spin-Two Higgs Impostors

John Ellis·Veronica Sanz·Tevong You
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Abstract

The new particle X recently discovered by the ATLAS and CMS Collaborations is widely expected to have spin zero, but this remains to be determined. The leading alternative is that X has spin two, presumably with graviton-like couplings. We show that measurements of the X particle to pairs of vector bosons constrain such scenarios. In particular, a graviton-like Higgs impostor in scenarios with a warped extra dimension of AdS type is prima facie excluded, principally because they predict too small a ratio between the X couplings to WW and ZZ, compared with that to photons. The data also disfavour universal couplings to pairs of photons and gluons, which would be predicted in a large class of graviton-like models.

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John Ellis, Veronica Sanz, Tevong You. 2012-11-13. Prima Facie Evidence against Spin-Two Higgs Impostors. https://doi.org/10.1016/j.physletb.2013.08.007

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