Observed 95% CL upper limits on B(H→ 2γ_d+X) for different γ_d masses and a 125 GeV Higgs boson, as a function of the dark-photon mean proper decay length cτ. The limits are shown for all search channels combined, assuming an FRVZ signal model. The hatched band denotes the region in which the branching ratio is larger than unity.

Observed 95% CL upper limits on B(H→ 2γ_d+X) for a γ_d mass of 100 MeV, as a function of the dark-photon mean proper decay length cτ. The solid black curve shows the observed exclusion limit from their statistical combination. The hatched band denotes the region in which the branching ratio is larger than unity.

Observed 95% CL upper limits on B(H→ 2γ_d+X) for a γ_d mass of 10 GeV, as a function of the dark-photon mean proper decay length cτ. The solid black curve shows the observed exclusion limit from their statistical combination. The hatched band denotes the region in which the branching ratio is larger than unity.

Acceptance times efficiency extrapolated as a function of cτ_γd for the μDPJ channel (SR_μ), obtained for the different FRVZ MC signal mass points.

Acceptance times efficiency extrapolated as a function of cτ_γd for the low E_T^miss caloDPJ channel (SR_c^L), obtained for the different FRVZ MC signal mass points.

Acceptance times efficiency extrapolated as a function of cτ_γd for the high E_T^miss caloDPJ channel (SR_c^H), obtained for the different FRVZ MC signal mass points.

Observed (solid line) and expected (dashed line) 95% CL upper limits on B(H→ 2γ_d+X) for FRVZ processes with a 125 GeV Higgs boson as a function of dark photon mean proper decay length for the ggF, WH and VBF analyses. The full combination is shown as solid or dashed black lines for a dark photon mass of 17 MeV.

Observed (solid line) and expected (dashed line) 95% CL upper limits on B(H→ 2γ_d+X) for FRVZ processes with a 125 GeV Higgs boson as a function of dark photon mean proper decay length for the ggF, WH and VBF analyses. The full combination is shown as solid or dashed black lines for a dark photon mass of 50 MeV.

Observed (solid line) and expected (dashed line) 95% CL upper limits on B(H→ 2γ_d+X) for FRVZ processes with a 125 GeV Higgs boson as a function of dark photon mean proper decay length for the ggF, WH and VBF analyses. The full combination is shown as solid or dashed black lines for a dark photon mass of 400 MeV.

Observed (solid line) and expected (dashed line) 95% CL upper limits on B(H→ 2γ_d+X) for FRVZ processes with a 125 GeV Higgs boson as a function of dark photon mean proper decay length for the ggF, WH and VBF analyses. The full combination is shown as solid or dashed black lines for a dark photon mass of 900 MeV.

Observed (solid line) and expected (dashed line) 95% CL upper limits on B(H→ 2γ_d+X) for FRVZ processes with a 125 GeV Higgs boson as a function of dark photon mean proper decay length for the ggF, WH and VBF analyses. The full combination is shown as solid or dashed black lines for a dark photon mass of 2 GeV.

Observed (solid line) and expected (dashed line) 95% CL upper limits on B(H→ 2γ_d+X) for FRVZ processes with a 125 GeV Higgs boson as a function of dark photon mean proper decay length for the ggF, WH and VBF analyses. The full combination is shown as solid or dashed black lines for a dark photon mass of 6 GeV.

Observed (solid line) and expected (dashed line) 95% CL upper limits on B(H→ 2γ_d+X) for FRVZ processes with a 125 GeV Higgs boson as a function of dark photon mean proper decay length for the ggF, WH and VBF analyses. The full combination is shown as solid or dashed black lines for a dark photon mass of 15 GeV.

Observed 95% CL upper limits on B(H→ 2γ_d+X) for different γ_d masses and a 125 GeV Higgs boson, as a function of the dark-photon mean proper decay length cτ. The limits are shown for the SR_μ search channel, assuming an FRVZ signal model. The hatched band denotes the region in which the branching ratio is larger than unity.

Observed 95% CL upper limits on B(H→ 2γ_d+X) for different γ_d masses and a 125 GeV Higgs boson, as a function of the dark-photon mean proper decay length cτ. The limits are shown for the SR_c^L search channel, assuming an FRVZ signal model. The hatched band denotes the region in which the branching ratio is larger than unity.

Observed 95% CL upper limits on B(H→ 2γ_d+X) for different γ_d masses and a 125 GeV Higgs boson, as a function of the dark-photon mean proper decay length cτ. The limits are shown for the SR_c^H search channel, assuming an FRVZ signal model. The hatched band denotes the region in which the branching ratio is larger than unity.

Observed 95% CL upper limits on B(H→ 2γ_d+X) for different γ_d masses and a 125 GeV Higgs boson, as a function of the dark-photon mean proper decay length cτ. The limits are shown for all search channels combined, assuming an FRVZ signal model. The hatched band denotes the region in which the branching ratio is larger than unity.