Constraints on the spin-parity and anomalous HVV couplings of the Higgs boson in proton collisions at 7 and 8 TeV

Constraints on the spin-parity and anomalous 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 H → ZZ,Zγ[superscript ∗],γ[superscript ∗]γ[superscript ∗] → 4ℓ, H → WW → ℓνℓν, and H → γγ decay modes. The full data set recorded by the CMS experiment during the LHC r...

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Bibliographic Details
Main Authors: Apyan, Aram, Barbieri, Richard Alexander, Busza, Wit, Cali, Ivan Amos, Di Matteo, Leonardo, Gomez-Ceballos, Guillelmo, Goncharov, Maxim, Gulhan, Doga Can, Klute, Markus, Lai, Yue Shi, Lee, Yen-Jie, Levin, Andrew Michael, Paus, Christoph M. E., Ralph, Duncan Kelley, Stephans, George S. F., Velicanu, Dragos Alexandru, Veverka, Jan, Wyslouch, Boleslaw, Yang, Mingming, Zanetti, Marco, Luckey Jr, P David, Roland, Christof E, Roland, Gunther M, Sumorok, Konstanty C, Wyslouch, Victoria, Chan, M.
Other Authors: Massachusetts Institute of Technology. Department of Physics
Format: Article
Language:en_US
Published: American Physical Society 2015
Online Access:http://hdl.handle.net/1721.1/98521
https://orcid.org/0000-0002-3831-9071
https://orcid.org/0000-0003-3106-4894
https://orcid.org/0000-0001-6332-5839
https://orcid.org/0000-0001-8983-2169
https://orcid.org/0000-0002-1260-777X
https://orcid.org/0000-0002-9418-6656
https://orcid.org/0000-0002-6047-4211
https://orcid.org/0000-0002-7945-005X
https://orcid.org/0000-0003-3681-0649
https://orcid.org/0000-0003-1486-606X
https://orcid.org/0000-0003-2593-7767
https://orcid.org/0000-0001-9236-6621
https://orcid.org/0000-0002-0869-5631
https://orcid.org/0000-0002-1136-6900
Description
Summary:The study of the spin-parity and tensor structure of the interactions of the recently discovered Higgs boson is performed using the H → ZZ,Zγ[superscript ∗],γ[superscript ∗]γ[superscript ∗] → 4ℓ, H → WW → ℓνℓν, and H → γγ decay modes. The full data set recorded by the CMS experiment during the LHC run 1 is used, corresponding to an integrated luminosity of up to 5.1  fb[superscript −1] at a center-of-mass energy of 7 TeV and up to 19.7  fb[superscript −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 gravitylike couplings, regardless of whether assumptions are made on the production mechanism. Any mixed-parity spin-one state is excluded in the ZZ and 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, Zγ, γγ, and WW is investigated and limits on eleven anomalous contributions are set. Tighter constraints on anomalous HVV interactions are obtained by combining the HZZ and HWW measurements. All observations are consistent with the expectations for the standard model Higgs boson with the quantum numbers J[superscript PC] = 0[superscript ++].

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