Observed and expected 95% CL upper limits on the product of the production cross section ($\sigma$) and the branching fraction, obtained after combining all categories with 138 $\mathrm{fb}^{−1}$ of data at $\sqrt{s}$ = 13 TeV for $\mathrm{V'}$ to $VV$ + $VH$ signal in HVT model C.

Total signal efficiency including all event categories as a function of the resonance mass $M_X$ for all DY/ggF signal models under consideration. The estimates from MC simulation (markers) are interpolated with a functional form (lines).

Total signal efficiency including all event categories as a function of the resonance mass $M_X$ for all VBF signal models under consideration. The estimates from MC simulation (markers) are interpolated with a functional form (lines).

Observed and expected 95% CL upper limits on the product of the cross section of a Z' resonance decaying to a pair of SM bosons.

Observed and expected 95% CL upper limits on the product of the cross section of a V' resonance decaying to a pair of SM bosons.

Observed and expected 95% CL upper limits on the product of the cross section of a V' resonance decaying to a pair of SM bosons.

Observed and expected 95% CL upper limits on the product of the cross section of a graviton decaying to a pair of SM bosons.

Observed and expected 95% CL upper limits on the product of the Z' cross section and the Z' -> WW branching fraction as a function of the Z' resonance mass.

Observed and expected 95% CL upper limits on the product of the bulk graviton cross section and the G -> WW branching fraction as a function of the G resonance mass.

Observed and expected 95% CL upper limits on the product of the W' cross section and the W' -> WZ branching fraction as a function of the W' resonance mass.

Observed and expected 95% CL upper limits on the product of the bulk graviton cross section and the G -> ZZ branching fraction as a function of the G resonance mass.

Observed and expected 95% CL upper limits on the product of the W' cross section and the W' -> WH branching fraction as a function of the W' resonance mass.

Observed and expected 95% CL upper limits on the product of the Z' cross section and the Z' -> ZH branching fraction as a function of the Z' resonance mass.

Observed and expected 95% CL upper limits on the product of the bulk graviton cross section and the G -> HH branching fraction as a function of the G resonance mass.

Distribution of $m_{jj}$ in data and simulation for events in the signal regions of the low-mass search. The points show the data while the filled histograms show the background contributions. The gray band shows the statistical and systematic uncertainties in the background, while the dashed vertical region ("Higgs") shows the expected SM Higgs boson mass range, which is excluded from this analysis. A 600 GeV bulk graviton signal prediction is represented by the black dashed histogram; for visibility, the signal cross-section is increased by a factor of 50. The background normalization is derived from the final fit to the $m_{VZ}$ observable in data.

The m$_{j}$ distributions of the events in data, compared to the expected background shape, for the high-mass analysis in the electron channel, for the high-purity category. The expected background shape is extracted from a fit to the data sidebands (Z+jets) or derived from simulation ("top quark" and "VV"). The dashed region around the background sum represents the uncertainty in the Z+jets distribution, while the dashed vertical region ("Higgs") shows the expected SM Higgs boson mass range, excluded from the analysis.

The m$_{j}$ distributions of the events in data, compared to the expected background shape, for the high-mass analysis in the electron channel, for the low-purity category. The expected background shape is extracted from a fit to the data sidebands (Z+jets) or derived from simulation ("top quark" and "VV"). The dashed region around the background sum represents the uncertainty in the Z+jets distribution, while the dashed vertical region ("Higgs") shows the expected SM Higgs boson mass range, excluded from the analysis.

The m$_{j}$ distributions of the events in data, compared to the expected background shape, for the high-mass analysis in the muon channel, for the high-purity category. The expected background shape is extracted from a fit to the data sidebands (Z+jets) or derived from simulation ("top quark" and "VV"). The dashed region around the background sum represents the uncertainty in the Z+jets distribution, while the dashed vertical region ("Higgs") shows the expected SM Higgs boson mass range, excluded from the analysis.

The m$_{j}$ distributions of the events in data, compared to the expected background shape, for the high-mass analysis in the muon channel, for the low-purity category. The expected background shape is extracted from a fit to the data sidebands (Z+jets) or derived from simulation ("top quark" and "VV"). The dashed region around the background sum represents the uncertainty in the Z+jets distribution, while the dashed vertical region ("Higgs") shows the expected SM Higgs boson mass range, excluded from the analysis.

Expected and observed distributions of the resonance candidate mass $m_{\text{VZ}}$ in the high-mass analysis, in the electron channel, high-purity category. The shaded area represents the post-fit uncertainty in the background. The expected contribution from W' signal candidates with mass $m_{\text{X}} = 2000$ GeV, normalized to a cross section of 100 fb$^{-1}$, is also shown.

Expected and observed distributions of the resonance candidate mass $m_{\text{VZ}}$ in the high-mass analysis, in the electron channel, low-purity category. The shaded area represents the post-fit uncertainty in the background. The expected contribution from W' signal candidates with mass $m_{\text{X}} = 2000$ GeV, normalized to a cross section of 100 fb$^{-1}$, is also shown.

Expected and observed distributions of the resonance candidate mass $m_{\text{VZ}}$ in the high-mass analysis, in the muon channel, high-purity category. The shaded area represents the post-fit uncertainty in the background. The expected contribution from W' signal candidates with mass $m_{\text{X}} = 2000$ GeV, normalized to a cross section of 100 fb$^{-1}$, is also shown.

Expected and observed distributions of the resonance candidate mass $m_{\text{VZ}}$ in the high-mass analysis, in the muon channel, low-purity category. The shaded area represents the post-fit uncertainty in the background. The expected contribution from W' signal candidates with mass $m_{\text{X}} = 2000$ GeV, normalized to a cross section of 100 fb$^{-1}$, is also shown.

Sideband $m_{ZV}$ distribution for the low-mass search in the merged V, untagged category, after fitting the sideband data alone. The points show the data while the filled histograms show the background contributions. Electron and muon categories are combined. The gray band indicates the statistical and post-fit systematic uncertainties in the normalization and shape of the background. Larger bin widths are used at higher values of $m_{ZV}$; the bin widths are indicated by the horizontal error bars.

Sideband $m_{ZV}$ distribution for the low-mass search in the merged V, tagged category, after fitting the sideband data alone. The points show the data while the filled histograms show the background contributions. Electron and muon categories are combined. The gray band indicates the statistical and post-fit systematic uncertainties in the normalization and shape of the background. Larger bin widths are used at higher values of $m_{ZV}$; the bin widths are indicated by the horizontal error bars.

Sideband $m_{ZV}$ distribution for the low-mass search in the resolved V, untagged category, after fitting the sideband data alone. The points show the data while the filled histograms show the background contributions. Electron and muon categories are combined. The gray band indicates the statistical and post-fit systematic uncertainties in the normalization and shape of the background. Larger bin widths are used at higher values of $m_{ZV}$; the bin widths are indicated by the horizontal error bars.

Sideband $m_{ZV}$ distribution for the low-mass search in the resolved V, tagged category, after fitting the sideband data alone. The points show the data while the filled histograms show the background contributions. Electron and muon categories are combined. The gray band indicates the statistical and post-fit systematic uncertainties in the normalization and shape of the background. Larger bin widths are used at higher values of $m_{ZV}$; the bin widths are indicated by the horizontal error bars.

The signal region $m_{VZ}$ distribution for the low-mass search, in the the merged V, untagged category, after fitting the signal and sideband regions. Electron and muon categories are combined. A 600 GeV bulk graviton signal prediction is represented by the black dashed histogram. The gray band indicates the statistical and post-fit systematic uncertainties in the normalization and shape of the background. Larger bin widths are used at higher values of $m_{VZ}$; the bin widths are indicated by the horizontal error bars.

The signal region $m_{VZ}$ distribution for the low-mass search, in the the merged V, tagged category, after fitting the signal and sideband regions. Electron and muon categories are combined. A 600 GeV bulk graviton signal prediction is represented by the black dashed histogram. The gray band indicates the statistical and post-fit systematic uncertainties in the normalization and shape of the background. Larger bin widths are used at higher values of $m_{VZ}$; the bin widths are indicated by the horizontal error bars.

The signal region $m_{VZ}$ distribution for the low-mass search, in the the resolved V, untagged category, after fitting the signal and sideband regions. Electron and muon categories are combined. A 600 GeV bulk graviton signal prediction is represented by the black dashed histogram. The gray band indicates the statistical and post-fit systematic uncertainties in the normalization and shape of the background. Larger bin widths are used at higher values of $m_{VZ}$; the bin widths are indicated by the horizontal error bars.

The signal region $m_{VZ}$ distribution for the low-mass search, in the the resolved V, tagged category, after fitting the signal and sideband regions. Electron and muon categories are combined. A 600 GeV bulk graviton signal prediction is represented by the black dashed histogram. The gray band indicates the statistical and post-fit systematic uncertainties in the normalization and shape of the background. Larger bin widths are used at higher values of $m_{VZ}$; the bin widths are indicated by the horizontal error bars.

Observed and expected 95% CL upper limit on $\sigma_{W'} Br(W' \to ZW)$ as a function of the resonance mass, taking into account all statistical and systematic uncertainties. The electron and muon channels and the various categories used in the analysis are combined together. The green (inner) and yellow (outer) bands represent the 68% and 95% coverage of the expected limit in the background-only hypothesis.

Observed and expected 95% CL upper limit on $\sigma_{G} Br(G \to ZZ)$ as a function of the resonance mass, taking into account all statistical and systematic uncertainties. The electron and muon channels and the various categories used in the analysis are combined together. The green (inner) and yellow (outer) bands represent the 68% and 95% coverage of the expected limit in the background-only hypothesis.

Observed local p-values for W' narrow resonances as a function of the resonance mass.

Observed local p-values for G narrow resonances as a function of the resonance mass.