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The ATLAS and CMS collaborations have recently shown data suggesting thepresence of a Higgs boson in the vicinity of 125 GeV. We show that a two-Higgsdoublet model spectrum, with the pseudo-scalar state being the lightest, couldbe responsible for the diphoton signal events. In this model, the other scalarsare considerably heavier and are not excluded by the current LHC data. If thisassumption is correct, future LHC data should show a strengthening of the$\gamma\gamma$ signal, while the signals in the $ZZ^{(*)}\to 4\ell $ and$WW^{(*)}\to 2\ell 2\nu$ channels should diminish and eventually disappear, dueto the absence of diboson tree-level couplings of the CP-odd state. The heavierCP-even neutral scalars can now decay into channels involving the CP-odd lightscalar which, together with their larger masses, allow them to avoid theexisting bounds on Higgs searches. We suggest additional signals to confirmthis scenario at the LHC, in the decay channels of the heavier scalars into$AA$ and $AZ$. Finally, this inverted two-Higgs doublet spectrum ischaracteristic in models where fermion condensation leads to electroweaksymmetry breaking. We show that in these theories it is possible to obtain theobserved diphoton signal at or somewhat above of the prediction for thestandard model Higgs for the typical values of the parameters predicted.

Is the LHC Observing the Pseudo-scalar State of a Two-Higgs Doublet Model ?