  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.
