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arXiv · 1609.09612

On the new LHC resonance

Paolo Cea
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Abstract

We present an alternative interpretation within the Standard Model of the new LHC resonance at $125 \; GeV$. We further elaborate on our previous proposal that the resonance at 125 GeV could be interpreted as a pseudoscalar meson with quantum number $J^{PC} = 0^{- +}$. We develop a phenomenological approach where this pseudoscalar mimics the decays of the Standard Model Higgs boson in the vector boson decay channels. We propose that the true Higgs boson should be a heavy resonance with mass of $750 \, GeV$ as argued in Ref.~\cite{Cea:2012}. We determine the most relevant decay modes and estimate the partial decay widths and branching ratios. We also discuss briefly the experimental signatures of this heavy Higgs boson. Finally, we attempt a comparison of our theoretical expectations with recent data at $\sqrt{s} =13 \,TeV$ from ATLAS and CMS experiments in the so-called golden channel. We find that the available experimental data could be consistent with the heavy Higgs scenario.

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Paolo Cea. 2016-09-30. On the new LHC resonance. https://arxiv.org/abs/1609.09612

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