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Using the full set of the LHC Higgs data from the runs at 7 and 8 TeV centerof mass energies that have been released by the ATLAS and CMS collaborations,we determine the couplings of the Higgs particle to fermions and gauge bosonsas well as its parity or CP composition. We consider ratios of production crosssections times decay branching fractions in which the theoretical (and someexperimental) uncertainties as well as as some ambiguities from new physicscancel out. A fit of both the signal strengths in the various search channelsthat have been conducted, H -> Z Z, W W, gamma gamma, tau tau and b b, andtheir ratios shows that the observed ~126 GeV particle has couplings tofermions and gauge bosons that are Standard Model-like already at the 68%confidence level (CL). From the signal strengths in which the theoreticaluncertainty is taken to be a bias, the particle is shown to be at most 68%CP-odd at the 99%CL and the possibility that it is a pure pseudoscalar state isexcluded at the 4 sigma level when including both the experimental andtheoretical uncertainties. The signal strengths also measure the invisibleHiggs decay width which, with the same type of uncertainty analysis, is shownto be Gamma_H^inv / Gamma_H^SM < 0.52 at the 68%CL.

The couplings of the Higgs boson and its CP properties from fits of the signal strengths and their ratios at the 7+8 TeV LHC