Constraints on anomalous Higgs boson couplings to vector bosons and fermions in its production and decay using the four-lepton final state

CMS Collaboration, Freya Blekman, Emil Sørensen Bols, Jorgen D'Hondt, Jarne Theo De Clercq, Martin Delcourt, Hesham El Faham, Steven Lowette, Alexander Morton, Denise Müller, Abanti Ranadhir Sahasransu, Stefaan Tavernier, Walter Van Doninck, Emil Sørensen Bols, Seth Moortgat, Petra Van Mulders

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Abstract

Studies of $CP$ violation and anomalous couplings of the Higgs boson to vector bosons and fermions are presented. The data were acquired by the CMS experiment at the LHC and correspond to an integrated luminosity of 137 fb$^{-1}$ at a proton-proton collision energy of 13 TeV. The kinematic effects in the Higgs boson's four-lepton decay H $\to$ 4$\ell$ and its production in association with two jets, a vector boson, or top quarks are analyzed, using a full detector simulation and matrix element techniques to identify the production mechanisms and to increase sensitivity to the Higgs boson tensor structure of the Higgs boson interactions. A simultaneous measurement is performed of up to five Higgs boson couplings to electroweak vector bosons (HVV), two couplings to gluons (Hgg), and two couplings to top quarks (Htt). The $CP$ measurement in the Htt interaction is combined with the recent measurement in the H $\to$ $\gamma\gamma$ channel. The results are presented in the framework of anomalous couplings and are also interpreted in the framework of effective field theory, including the first study of $CP$ properties of the Htt and effective Hgg couplings from a simultaneous analysis of the gluon fusion and top-associated processes. The results are consistent with the standard model of particle physics.
Original languageEnglish
Article number052004
Number of pages51
JournalPhys. Rev. D
Volume104
Issue number5
DOIs
Publication statusPublished - 17 Sep 2021

Bibliographical note

Replaced with the published version. Added the journal reference and the DOI. All the figures and tables can be found at http://cms-results.web.cern.ch/cms-results/public-results/publications/HIG-19-009 (CMS Public Pages)

Keywords

  • hep-ex

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