A search for decays of the Higgs boson to invisible particles in events with a top-antitop quark pair or a vector boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV

The CMS collaboration
Eur.Phys.J.C 83 (2023) 933, 2023.

Abstract
A search for decays to invisible particles of Higgs bosons produced in association with a top-antitop quark pair or a vector boson, which both decay to a fully hadronic final state, has been performed using proton-proton collision data collected at $\sqrt{s}$ = 13 TeV by the CMS experiment at the LHC, corresponding to an integrated luminosity of 138 fb$^{-1}$. The 95% confidence level upper limit set on the branching fraction of the 125 GeV Higgs boson to invisible particles, $\mathcal{B}$(H $\to$ inv), is 0.54 (0.39 expected), assuming standard model production cross sections. The results of this analysis are combined with previous $\mathcal{B}$(H $\to$ inv) searches carried out at $\sqrt{s}$ = 7, 8, and 13 TeV in complementary production modes. The combined upper limit at 95% confidence level on $\mathcal{B}$(H $\to$ inv) is 0.15 (0.08 expected).

  • ttH and VH limits on the H$\to$inv. branching fraction

    Data from Figure 6

    10.17182/hepdata.137761.v1/t1

    Observed and expected 95% CL upper limits on ${{(\sigma_{\text{H}}/\sigma_{\text{H}}^{\mathrm{SM}}) \times {{\mathcal{B}(\text{H} \to \text{inv})}}}}$ for hadronic final states of ttH and...

  • Run1+Run2 H$\to$inv upper limits

    Data from Figure 7

    10.17182/hepdata.137761.v1/t2

    Observed and expected 95% CL upper limits on ${{(\sigma_{\text{H}}/\sigma_{\text{H}}^{\mathrm{SM}}) \times {{\mathcal{B}(\text{H} \to \text{inv})}}}}$ for the VBF, ttH, VH and ggH...

  • Run2 H$\to$inv upper limits

    Additional material

    10.17182/hepdata.137761.v1/t3

    Observed and expected 95% CL upper limits on ${{(\sigma_{\text{H}}/\sigma_{\text{H}}^{\mathrm{SM}}) \times {{\mathcal{B}(\text{H} \to \text{inv})}}}}$ for the VBF, ttH, VH and ggH...

  • H$\to$inv upper limits per data-taking period

    Additional material

    10.17182/hepdata.137761.v1/t4

    Observed and expected 95% CL upper limits on ${{(\sigma_{\text{H}}/\sigma_{\text{H}}^{\mathrm{SM}}) \times {{\mathcal{B}(\text{H} \to \text{inv})}}}}$ for the combined VBF, ttH, VH and...

  • H$\to$inv upper limits by final state

    Additional material

    10.17182/hepdata.137761.v1/t5

    Observed and expected 95% CL upper limits on ${{(\sigma_{\text{H}}/\sigma_{\text{H}}^{\mathrm{SM}}) \times {{\mathcal{B}(\text{H} \to \text{inv})}}}}$ for the VBF, ttH(lep), ttH(had), V(qq)H, Z(ll)H,...

  • Upper limits on SI dark matter nucleon cross section

    Data from Figure 8

    10.17182/hepdata.137761.v1/t6

    The 90% CL upper limits on the spin-independent DM-nucleon scattering cross section in Higgs-portal models, assuming a scalar, fermionic or...

  • Postfit event yields in ttH SR

    Data from Table 6 / Figure 5.

    10.17182/hepdata.137761.v1/t7

    Postfit event yields in each category and hadronic recoil bin of the ttH category SR for the different background and...

  • Postfit event yields in VH SR

    Data from Table 6 / Figure 5.

    10.17182/hepdata.137761.v1/t8

    Postfit event yields in each category and hadronic recoil bin of the VH category SR for the different background and...

  • Postfit event yields in ttH single-electron CR

    Data from Figure 3.

    10.17182/hepdata.137761.v1/t9

    Postfit event yields in each category and $p\mathrm{_{T}^{miss}}$ bin of the ttH category e$+$jets CR for the different background processes...

  • Postfit event yields in the VH single-electron CR

    Data from Figure 3.

    10.17182/hepdata.137761.v1/t10

    Postfit event yields in each category and $p\mathrm{_{T}^{miss}}$ bin of the VH category e$+$jets CR for the different background processes...

  • Postfit event yields in the ttH single-muon CR

    Data from Figure 2.

    10.17182/hepdata.137761.v1/t11

    Postfit event yields in each category and $p\mathrm{_{T}^{miss}}$ bin of the ttH category $\mu+$jets CR for the different background processes...

  • Postfit event yields in the VH single-muon CR

    Data from Figure 2.

    10.17182/hepdata.137761.v1/t12

    Postfit event yields in each category and $p\mathrm{_{T}^{miss}}$ bin of the VH category $\mu+$jets CR for the different background processes...

  • Postfit event yields in the ttH dilepton CRs

    Data from Figure 4.

    10.17182/hepdata.137761.v1/t13

    Postfit event yields in each category and $p\mathrm{_{T}^{miss}}$ bin of the ttH category ee$+$jets, $\mu\mu+$jets, and $\ell\ell+$jets CRs for the...

  • Postfit event yields in the VH dilepton and photon CRs

    Data from Figure 4.

    10.17182/hepdata.137761.v1/t14

    Postfit event yields in each category and $p\mathrm{_{T}^{miss}}$ bin of the VH category ee$+$jets, $\mu\mu+$jets, and $\gamma+$jets CRs for the...

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