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

By V. Khachatryan, A. Sirunyan, A. Tumasyan, W. Adam, T. Bergauer, M. Dragicevic, J. Erö, M. Friedl, Rudolf Frühwirth, V. Ghete and 2,102 more. 2015

438 citations recorded by the source corpus.

The study of the spin-parity and tensor structure of the interactions of the recently discovered Higgs boson is performed using the H to ZZ, Z gamma*, gamma* gamma* to 4 l, H to WW to l nu l nu, and H to 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 inverse femtobarns at a center-of-mass energy of 7 TeV and up to 19.7 inverse femtobarns 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 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, Z gamma, gamma gamma, 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[PC]=0[++].

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/a93adb74c12235de358836fdc41766b0f88ad966

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In Nuclear and High Energy Physics

Citations in the corpus

Constraining anomalous Higgs boson couplings to the heavy flavor fermions using matrix element techniques (2016, methodology): “analysis of HVV processes with LHC data by the CMS [2,3,52,53,55,57,91] and ATLAS [5,59,60] experiments and phenomenological studies supporting this development [61–63].”
Measurements of the Higgs boson production and decay rates and coupling strengths using pp collision data at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\o (2015, positive): “A similar combination has been published by the CMS Collaboration [26].”
Higgs Physics at the HL-LHC and HE-LHC (2019, background): “total cross section from these coefficients is parametrised in terms of their fractional contribution to onshell H ! 2e2μ decays via the fractions fai and phases ai [269, 270].”
Evidence for the associated production of the Higgs boson and a top quark pair with the ATLAS detector (2017, neutral): “[17] CMS Collaboration, Constraints on the spin-parity and”
Study of the spin and parity of the Higgs boson in diboson decays with the ATLAS detector (2015, neutral): “[4,5].”
Measurements of properties of the Higgs boson decaying into the four-lepton final state in pp collisions at s=13$$ \sqrt{s}=13 $$ TeV (2017, methodology): “Measurements performed by the ATLAS and CMS Collaborations using this decay channel with the LHC Run 1 data include the determination of the mass and spin-parity of the boson [14–18], its width [19–21], the fiducial cross sections [22, 23], and the tensor structure of its interaction with a pair of ”