A Higgs impostor in low-scale technicolor
Files
First author draft
Date
2012
DOI
Authors
Eichten, Estia
Lane, Kenneth D.
Martin, Adam
Version
First author draft
OA Version
Citation
Estia Eichten, Kenneth Lane, Adam Martin. 2012. "A Higgs Impostor in Low-Scale Technicolor." https://arxiv.org/abs/1210.5462v2
Abstract
We propose a "Higgs impostor" model for the 125 GeV boson, X, recently discovered at the LHC. It is a technipion, η_T, with I^G J^PC = 0^- 0^-+ expected in this mass region in low-scale technicolor. Its coupling to pairs of standard-model gauge bosons are dimension-five operators whose strengths are determined within the model. It is easy for the gluon fusion rate σ B (gg ⟶ η_T ⟶ 𝛾𝛾) to agree with the measured one, but η_T ⟶ ZZ^*,WW^* are greatly suppressed relative to the standard-model Higgs rates. This is a crucial test of our proposal. In this regard, we assess the most recent data on X decay modes, with a critical discussion of X ⟶ ZZ^* ⟶ 4𝓁. In our model the η_T mixes almost completely with the isovector 𝜋^0_T, giving two similar states, η_L at 125 Gev and η_H higher, possibly in the range 170--190 Gev. Important consequences of this mixing are (1) the only associated production of η_L is via 𝘱T ⟶ Wη_L, and this could be sizable; (2) η_H may soon be accessible in gg ⟶ η_H ⟶ 𝛾𝛾; and (3) LSTC phenomenology at the LHC is substantially modified.