CMS
PUBLISHED
SM
Constraints on the spin-parity and anomalous HVV\mathrm{HVV} couplings of the Higgs boson in proton collisions at 7 and 8 TeV

The study of the spin-parity and tensor structure of the interactions of the recently discovered Higgs boson is performed using the HZZ\mathrm{H} \rightarrow \mathrm{Z} \mathrm{Z}, Zγ\mathrm{Z}\gamma^*, γγ4\gamma^*\gamma^* \rightarrow 4\ell, HWWνν\mathrm{H} \rightarrow \mathrm{W} \mathrm{W} \rightarrow \ell\nu\ell\nu, and Hγγ\mathrm{H} \rightarrow \gamma\gamma decay modes. The full dataset recorded by the CMS experiment during the LHC Run 1 is used, corresponding to an integrated luminosity of up to 5.1~\mathrm{fb}^{-1} at a center-of-mass energy of 7 TeV and up to 19.7~\mathrm{fb}^{-1} at 8 TeV. A wide range of spin-two models is excluded at a 99% confidence level or higher, or at a 99.87% confidence level for the minimal gravity-like couplings, regardless of whether assumptions are made on the production mechanism. Any mixed-parity spin-one state is excluded in the ZZ\mathrm{ZZ} and WW\mathrm{WW } modes at a greater than 99.999% confidence level. Under the hypothesis that the resonance is a spin-zero boson, the tensor structure of the interactions of the Higgs boson with two vector bosons ZZ\mathrm{Z} \mathrm{Z}, Zγ\mathrm{Z}\gamma, γγ\gamma\gamma, and WW\mathrm{W} \mathrm{W} is investigated and limits on eleven anomalous contributions are set. Tighter constraints on anomalous HVV\mathrm{HVV} interactions are obtained by combining the HZZ\mathrm{HZZ} and HWW\mathrm{HWW} measurements. All observations are consistent with the expectations for the standard model Higgs boson with the quantum numbers JPC=0++J^{\mathrm{PC}}=0^{++}.

Edit

Log in to your administrator account to edit.