Example description

Example description

Example description

Observed and expected 95% CL upper limits on the nonresonant HH production via vector boson fusion cross section obtained for both single-lepton and dilepton channels, and from their combination

Observed and expected 95% CL upper limits on the nonresonant HH production cross section for two different benchmark scenarios “JHEP04(2016)01” and “JHEP03(2020)91”

Observed and expected 95% CL upper limits on the nonresonant HH production cross section as a function of the Higgs boson self-coupling strength modifier κλ All Higgs boson couplings other than λ are assumed to have the values predicted by the SM

Observed and expected 95% CL upper limits on the nonresonant HH production via VBF cross section as a function of the effective coupling κ2V. The ggF contribution in this case is set to the SM expectation. All other Higgs boson couplings are assumed to have the values predicted by the SM.

Observed and expected 95% CL upper limits on the nonresonant HH production cross section as a function of the effective coupling c2. All other Higgs boson couplings are assumed to have the values predicted in the SM

The expected upper $68\%$ exclusions for the nominal $\sigma$ cross section in the plane of $m_{\phi}$ and $T_D$, for various $m_S$ values, for the case $m_{A'}=1.0$ GeV ($A' \rightarrow \pi^+\pi^-$ with $\mathcal{BR}=100\%$).

The expected lower $68\%$ exclusions for the nominal $\sigma$ cross section in the plane of $m_{\phi}$ and $T_D$, for various $m_S$ values, for the case $m_{A'}=1.0$ GeV ($A' \rightarrow \pi^+\pi^-$ with $\mathcal{BR}=100\%$).

The $95\%$ CL observed upper limits on the cross section shown as a functions of $T_D$ and the pseudoscalar mass $m_{\phi}$ for $m_S = 300$ GeV, for the case $m_{A'}=1.0$ GeV ($A' \rightarrow \pi^+\pi^-$ with $\mathcal{BR}=100\%$).

The $95\%$ CL observed upper limits on the cross section shown as a functions of $T_D$ and the pseudoscalar mass $m_{\phi}$ for $m_S = 600$ GeV, for the case $m_{A'}=1.0$ GeV ($A' \rightarrow \pi^+\pi^-$ with $\mathcal{BR}=100\%$).

The $95\%$ CL observed upper limits on the cross section shown as a functions of $T_D$ and the pseudoscalar mass $m_{\phi}$ for $m_S = 1000$ GeV, for the case $m_{A'}=1.0$ GeV ($A' \rightarrow \pi^+\pi^-$ with $\mathcal{BR}=100\%$).

The observed exclusions for the nominal $\sigma$ cross section in the plane of $m_{\phi}$ and $T_D$, for various $m_S$ values, for the case $m_{A'} = 0.5$ GeV ($A' \rightarrow e^+e^-, \mu^+\mu^-, \pi^+\pi^-$ with $\mathcal{BR} = 40, 40, 20\%$).

The expected exclusions for the nominal $\sigma$ cross section in the plane of $m_{\phi}$ and $T_D$, for various $m_S$ values, for the case $m_{A'} = 0.5$ GeV ($A' \rightarrow e^+e^-, \mu^+\mu^-, \pi^+\pi^-$ with $\mathcal{BR} = 40, 40, 20\%$).

The expected upper $68\%$ exclusions for the nominal $\sigma$ cross section in the plane of $m_{\phi}$ and $T_D$, for various $m_S$ values, for the case $m_{A'} = 0.5$ GeV ($A' \rightarrow e^+e^-, \mu^+\mu^-, \pi^+\pi^-$ with $\mathcal{BR} = 40, 40, 20\%$).

The expected lower $68\%$ exclusions for the nominal $\sigma$ cross section in the plane of $m_{\phi}$ and $T_D$, for various $m_S$ values, for the case $m_{A'} = 0.5$ GeV ($A' \rightarrow e^+e^-, \mu^+\mu^-, \pi^+\pi^-$ with $\mathcal{BR} = 40, 40, 20\%$).

The observed exclusions for the nominal $\sigma$ cross section in the plane of $m_{\phi}$ and $T_D$, for various $m_S$ values, for the case $m_{A'} = 0.7$ GeV ($A' \rightarrow e^+e^-, \mu^+\mu^-, \pi^+\pi^-$ with $\mathcal{BR} = 15, 15, 70\%$).

The expected exclusions for the nominal $\sigma$ cross section in the plane of $m_{\phi}$ and $T_D$, for various $m_S$ values, for the case $m_{A'} = 0.7$ GeV ($A' \rightarrow e^+e^-, \mu^+\mu^-, \pi^+\pi^-$ with $\mathcal{BR} = 15, 15, 70\%$).

The expected upper $68\%$ exclusions for the nominal $\sigma$ cross section in the plane of $m_{\phi}$ and $T_D$, for various $m_S$ values, for the case $m_{A'} = 0.7$ GeV ($A' \rightarrow e^+e^-, \mu^+\mu^-, \pi^+\pi^-$ with $\mathcal{BR} = 15, 15, 70\%$).

The expected lower $68\%$ exclusions for the nominal $\sigma$ cross section in the plane of $m_{\phi}$ and $T_D$, for various $m_S$ values, for the case $m_{A'} = 0.7$ GeV ($A' \rightarrow e^+e^-, \mu^+\mu^-, \pi^+\pi^-$ with $\mathcal{BR} = 15, 15, 70\%$).

For a selection of signal samples in era 2018 with $m_{\phi} = T_D = 3$ GeV, the relative efficiencies and the total efficiency with respect to the selection on the generator-level $H_T$,$H^{gen}_T > 1000$ GeV.

The $95\%$ CL cross section limit for all values of $m_{A'}$, $T_D$, $m_{\phi}$, and $m_S$ used in the scan.

Expected and observed 95% CL upper limits on $|V_\mathrm{N}|^2$ as a function of $m_\mathrm{N}$ for the mixing scenario ($r_e$, $r_\mu$, $r_\tau$) = (0.33, 0.33, 0.33) and in the Majorana scenario.

Expected and observed 95% CL upper limits on $|V_\mathrm{N}|^2$ as a function of $m_\mathrm{N}$ for the mixing scenario ($r_e$, $r_\mu$, $r_\tau$) = (0.0, 1.0, 0.0) and in the Dirac-like scenario.

Expected and observed 95% CL upper limits on $|V_\mathrm{N}|^2$ as a function of $m_\mathrm{N}$ for the mixing scenario ($r_e$, $r_\mu$, $r_\tau$) = (0.0, 0.5, 0.5) and in the Dirac-like scenario.

Expected and observed 95% CL upper limits on $|V_\mathrm{N}|^2$ as a function of $m_\mathrm{N}$ for the mixing scenario ($r_e$, $r_\mu$, $r_\tau$) = (0.5, 0.5, 0.0) and in the Dirac-like scenario.

Expected and observed 95% CL upper limits on $|V_\mathrm{N}|^2$ as a function of $m_\mathrm{N}$ for the mixing scenario ($r_e$, $r_\mu$, $r_\tau$) = (0.33, 0.33, 0.33) and in the Dirac-like scenario.

Observed 95% CL lower limits on $c\tau_\mathrm{N}$ as functions of the mixing ratios ($r_e$, $r_\mu$, $r_\tau$) for a fixed N mass of 1.0 GeV in the Majorana scenario.

Observed 95% CL lower limits on $c\tau_\mathrm{N}$ as functions of the mixing ratios ($r_e$, $r_\mu$, $r_\tau$) for a fixed N mass of 1.5 GeV in the Majorana scenario.

Observed 95% CL lower limits on $c\tau_\mathrm{N}$ as functions of the mixing ratios ($r_e$, $r_\mu$, $r_\tau$) for a fixed N mass of 2.0 GeV in the Majorana scenario.

Observed 95% CL lower limits on $c\tau_\mathrm{N}$ as functions of the mixing ratios ($r_e$, $r_\mu$, $r_\tau$) for a fixed N mass of 1.0 GeV in the Dirac-like scenario.

Observed 95% CL lower limits on $c\tau_\mathrm{N}$ as functions of the mixing ratios ($r_e$, $r_\mu$, $r_\tau$) for a fixed N mass of 1.5 GeV in the Dirac-like scenario.

Observed 95% CL lower limits on $c\tau_\mathrm{N}$ as functions of the mixing ratios ($r_e$, $r_\mu$, $r_\tau$) for a fixed N mass of 2.0 GeV in the Dirac-like scenario.

Observed profiled likelihood on $f_{\Lambda1}$ using Approach 1. The signal strength modifiers are treated as free parameters. Axis scales are varied to improve the visibility of important features.

Expected profiled likelihood on $f_{a3}$ using Approach 1. The signal strength modifiers are treated as free parameters.

Observed profiled likelihood on $f_{a3}$ using Approach 1. The signal strength modifiers are treated as free parameters.

Expected profiled likelihood on $f_{\Lambda1}^{Z\gamma}$ using Approach 1. The signal strength modifiers are treated as free parameters.

Observed profiled likelihood on $f_{\Lambda1}^{Z\gamma}$ using Approach 1. The signal strength modifiers are treated as free parameters.

Expected profiled likelihood on $f_{a2}$ using Approach 2. The other two anomalous coupling cross section fractions are fixed to zero. The signal strength modifiers are treated as free parameters. Axis scales are varied to improve the visibility of important features.

Observed profiled likelihood on $f_{a2}$ using Approach 2. The other two anomalous coupling cross section fractions are fixed to zero. The signal strength modifiers are treated as free parameters. Axis scales are varied to improve the visibility of important features.

Expected profiled likelihood on $f_{\Lambda1}$ using Approach 2. The other two anomalous coupling cross section fractions are fixed to zero. The signal strength modifiers are treated as free parameters. Axis scales are varied to improve the visibility of important features.

Observed profiled likelihood on $f_{\Lambda1}$ using Approach 2. The other two anomalous coupling cross section fractions are fixed to zero. The signal strength modifiers are treated as free parameters. Axis scales are varied to improve the visibility of important features.

Expected profiled likelihood on $f_{a3}$ using Approach 2. The other two anomalous coupling cross section fractions are fixed to zero. The signal strength modifiers are treated as free parameters.

Observed profiled likelihood on $f_{a3}$ using Approach 2. The other two anomalous coupling cross section fractions are fixed to zero. The signal strength modifiers are treated as free parameters.

Expected profiled likelihood on $f_{a2}$ using Approach 2. The other two anomalous coupling cross section fractions are left floating in the fit. The signal strength modifiers are treated as free parameters. Axis scales are varied to improve the visibility of important features.

Observed profiled likelihood on $f_{a2}$ using Approach 2. The other two anomalous coupling cross section fractions are left floating in the fit. The signal strength modifiers are treated as free parameters. Axis scales are varied to improve the visibility of important features.

Expected profiled likelihood on $f_{\Lambda1}$ using Approach 2. The other two anomalous coupling cross section fractions are left floating in the fit. The signal strength modifiers are treated as free parameters. Axis scales are varied to improve the visibility of important features.

Observed profiled likelihood on $f_{\Lambda1}$ using Approach 2. The other two anomalous coupling cross section fractions are left floating in the fit. The signal strength modifiers are treated as free parameters. Axis scales are varied to improve the visibility of important features.

Expected profiled likelihood on $f_{a3}$ using Approach 2. The other two anomalous coupling cross section fractions are left floating in the fit. The signal strength modifiers are treated as free parameters.

Observed profiled likelihood on $f_{a3}$ using Approach 2. The other two anomalous coupling cross section fractions are left floating in the fit. The signal strength modifiers are treated as free parameters.

Expected profiled likelihood on the $\delta c_{Z}$ coupling of the SMEFT Higgs basis.

Observed profiled likelihood on the $\delta c_{Z}$ coupling of the SMEFT Higgs basis.

Expected profiled likelihood on the $c_{Z\Box}$ coupling of the SMEFT Higgs basis.

Observed profiled likelihood on the $c_{Z\Box}$ coupling of the SMEFT Higgs basis.

Expected profiled likelihood on the $c_{ZZ}$ coupling of the SMEFT Higgs basis.

Observed profiled likelihood on the $c_{ZZ}$ coupling of the SMEFT Higgs basis.

Expected profiled likelihood on the $\tilde{c}_{ZZ}$ coupling of the SMEFT Higgs basis.

Observed profiled likelihood on the $\tilde{c}_{ZZ}$ coupling of the SMEFT Higgs basis.

Expected profiled likelihood on $f_{a3}^{ggH}$. The signal strength modifiers and the CP-odd HVV anomalous coupling cross section fraction are treated as free parameters.

Observed profiled likelihood on $f_{a3}^{ggH}$. The signal strength modifiers and the CP-odd HVV anomalous coupling cross section fraction are treated as free parameters.

The 95% CL limits on $|V_{\mu N}|^2$ as a function of the HNL mass for a Majorana HNL.

The 95% CL limits on $|V_{\tau N}|^2$ as a function of the HNL mass for a Majorana HNL.

The 95% CL limits on $|V_{\tau N}|^2$ as a function of the HNL mass for a Majorana HNL.

The 95% CL limits on $|V_{eN}|^2$ as a function of the HNL mass for a Dirac HNL.

The 95% CL limits on $|V_{eN}|^2$ as a function of the HNL mass for a Dirac HNL.

The 95% CL limits on $|V_{\mu N}|^2$ as a function of the HNL mass for a Dirac HNL.

The 95% CL limits on $|V_{\mu N}|^2$ as a function of the HNL mass for a Dirac HNL.

The 95% CL limits on $|V_{\tau N}|^2$ as a function of the HNL mass for a Dirac HNL.

The 95% CL limits on $|V_{\tau N}|^2$ as a function of the HNL mass for a Dirac HNL.

Comparison of the number of predicted background events and the observed events in search regions La. The predicted background yields are shown with the values of the normalizations and nuisance parameters obtained in the background-only fit applied.

Comparison of the number of predicted background events and the observed events in search regions La. The predicted background yields are shown with the values of the normalizations and nuisance parameters obtained in the background-only fit applied.

Signal yields predicted in search regions La as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and an electron neutrino.

Signal yields predicted in search regions La as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and an electron neutrino.

Signal yields predicted in search regions La as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a muon neutrino.

Signal yields predicted in search regions La as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a muon neutrino.

Signal yields predicted in search regions La as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a tau neutrino.

Signal yields predicted in search regions La as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a tau neutrino.

Comparison of the number of predicted background events and the observed events in search regions Lb. The predicted background yields are shown with the values of the normalizations and nuisance parameters obtained in the background-only fit applied.

Comparison of the number of predicted background events and the observed events in search regions Lb. The predicted background yields are shown with the values of the normalizations and nuisance parameters obtained in the background-only fit applied.

Signal yields predicted in search regions Lb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and an electron neutrino.

Signal yields predicted in search regions Lb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and an electron neutrino.

Signal yields predicted in search regions Lb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a muon neutrino.

Signal yields predicted in search regions Lb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a muon neutrino.

Signal yields predicted in search regions Lb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a tau neutrino.

Signal yields predicted in search regions Lb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a tau neutrino.

Comparison of the number of predicted background events and the observed events in search regions Ha. The predicted background yields are shown with the values of the normalizations and nuisance parameters obtained in the background-only fit applied.

Comparison of the number of predicted background events and the observed events in search regions Ha. The predicted background yields are shown with the values of the normalizations and nuisance parameters obtained in the background-only fit applied.

Signal yields predicted in search regions Ha as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and an electron neutrino.

Signal yields predicted in search regions Ha as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and an electron neutrino.

Signal yields predicted in search regions Ha as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a muon neutrino.

Signal yields predicted in search regions Ha as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a muon neutrino.

Signal yields predicted in search regions Ha as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a tau neutrino.

Signal yields predicted in search regions Ha as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a tau neutrino.

Comparison of the number of predicted background events and the observed events in search regions Hb. The predicted background yields are shown with the values of the normalizations and nuisance parameters obtained in the background-only fit applied. Search regions Hb2 and Hb3 are merged for final states including a hadronically decayed tau lepton. This is represented by the value of -1 in the Hb2 entry.

Comparison of the number of predicted background events and the observed events in search regions Hb. The predicted background yields are shown with the values of the normalizations and nuisance parameters obtained in the background-only fit applied. Search regions Hb2 and Hb3 are merged for final states including a hadronically decayed tau lepton. This is represented by the value of -1 in the Hb2 entry.

Signal yields predicted in search regions Hb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and an electron neutrino. Search regions Hb2 and Hb3 are merged for final states including a hadronically decayed tau lepton. This is represented by the value of -1 in the Hb2 entry.

Signal yields predicted in search regions Hb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and an electron neutrino. Search regions Hb2 and Hb3 are merged for final states including a hadronically decayed tau lepton. This is represented by the value of -1 in the Hb2 entry.

Signal yields predicted in search regions Hb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a muon neutrino. Search regions Hb2 and Hb3 are merged for final states including a hadronically decayed tau lepton. This is represented by the value of -1 in the Hb2 entry.

Signal yields predicted in search regions Hb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a muon neutrino. Search regions Hb2 and Hb3 are merged for final states including a hadronically decayed tau lepton. This is represented by the value of -1 in the Hb2 entry.

Signal yields predicted in search regions Hb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a tau neutrino. Search regions Hb2 and Hb3 are merged for final states including a hadronically decayed tau lepton. This is represented by the value of -1 in the Hb2 entry.

Signal yields predicted in search regions Hb as function of HNL mass and coupling strength for a scenario with exclusive coupling between a Majorana HNL and a tau neutrino. Search regions Hb2 and Hb3 are merged for final states including a hadronically decayed tau lepton. This is represented by the value of -1 in the Hb2 entry.

Covariance matrix for the postfit background prediction in signal region bins La.

Covariance matrix for the postfit background prediction in signal region bins La.

Covariance matrix for the postfit background prediction in signal region bins Lb.

Covariance matrix for the postfit background prediction in signal region bins Lb.

Covariance matrix for the postfit background prediction in signal region bins Ha.

Covariance matrix for the postfit background prediction in signal region bins Ha.

Covariance matrix for the postfit background prediction in signal region bins Hb.

Covariance matrix for the postfit background prediction in signal region bins Hb.

Simulated signal yields passing each stage of the low mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and an electron neutrino.

Simulated signal yields passing each stage of the low mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and an electron neutrino.

Simulated signal yields passing each stage of the low mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and a muon neutrino.

Simulated signal yields passing each stage of the low mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and a muon neutrino.

Simulated signal yields passing each stage of the low mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and a tau neutrino.

Simulated signal yields passing each stage of the low mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and a tau neutrino.

Simulated signal yields passing each stage of the high mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and an electron neutrino.

Simulated signal yields passing each stage of the high mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and an electron neutrino.

Simulated signal yields passing each stage of the high mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and a muon neutrino.

Simulated signal yields passing each stage of the high mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and a muon neutrino.

Simulated signal yields passing each stage of the high mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and a tau neutrino.

Simulated signal yields passing each stage of the high mass region selection as function of HNL mass and signal strength. Shown for exclusive coupling between a Majorana HNL and a tau neutrino.

Comparison of hits distributions for events with muons from \zmm between data and simulation, for CSC clusters (left) and DT clusters (right), using data collected in 2017 and the simulation of the corresponding data-taking conditions. The data sample is selected by requiring a two-muon invariant mass consistent with a Z boson and one of the muons is matched to an MDS cluster. Data-to-simulation correction factors are applied to the \zmm simulation. Only statistical uncertainties are included in the figure. Distributions made using data collected in 2016 and 2018 are found to have similar shape as the 2017 data sample.

Comparison of hits distributions for events with muons from \zmm between data and simulation, for CSC clusters (left) and DT clusters (right), using data collected in 2017 and the simulation of the corresponding data-taking conditions. The data sample is selected by requiring a two-muon invariant mass consistent with a Z boson and one of the muons is matched to an MDS cluster. Data-to-simulation correction factors are applied to the \zmm simulation. Only statistical uncertainties are included in the figure. Distributions made using data collected in 2016 and 2018 are found to have similar shape as the 2017 data sample.

The expected and observed number of events in the signal region (bin D) of different event categories. Signal yields of a 2 GeV Majorana HNL with the mean proper decay length of 1 m are added to the expected background.

Expected and observed upper 95% CL limits on |VNμ|2 as functions of the HNL mass(mN) for a Majorana HNL. For these limit calculations, the HNL is assumed to mix with a single lepton flavor state only. The difference between the expected and observed limits on |VNμ|2 are not visible in this figure.

Expected and observed upper 95% CL limits on |VNμ|2 as functions of the HNL mass(mN) for a Dirac HNL. For these limit calculations, the HNL is assumed to mix with a single lepton flavor state only. The difference between the expected and observed limits on |VNμ|2 are not visible in this figure.

Expected and observed upper 95% CL limits on |VNe|2 as functions of the HNL mass(mN) for a Majorana HNL. For these limit calculations, the HNL is assumed to mix with a single lepton flavor state only. The difference between the expected and observed limits on |VNμ|2 are not visible in this figure.

Expected and observed upper 95% CL limits on |VNe|2 as functions of the HNL mass(mN) for a Dirac HNL. For these limit calculations, the HNL is assumed to mix with a single lepton flavor state only. The difference between the expected and observed limits on |VNμ|2 are not visible in this figure.

Expected and observed upper 95% CL limits on |VNtau|2 as functions of the HNL mass(mN) for a Majorana HNL. For these limit calculations, the HNL is assumed to mix with a single lepton flavor state only. The tau neutrino mixing limit is obtained by combining the results from the electron and muon channels. The difference between the expected and observed limits on |VNμ|2 are not visible in this figure.

Expected and observed upper 95% CL limits on |VNtau|2 as functions of the HNL mass(mN) for a Dirac HNL. For these limit calculations, the HNL is assumed to mix with a single lepton flavor state only. The tau neutrino mixing limit is obtained by combining the results from the electron and muon channels. The difference between the expected and observed limits on |VNμ|2 are not visible in this figure.

The largest values of the Majorana HNL mass that are excluded at 95% CL are shown as a function of the mixing matrix elements squared ratios fl with the three lepton generations, considering a fixed mass of 1.5 GeV.

The largest values of the Dirac HNL mass that are excluded at 95% CL are shown as a function of the mixing matrix elements squared ratios fl with the three lepton generations, considering a fixed mass of 1.5 GeV.

The largest values of the Majorana HNL mass that are excluded at 95% CL are shown as a function of the mixing matrix elements squared ratios fl with the three lepton generations, considering a mean proper decay length of 1 m.

The largest values of the Dirac HNL mass that are excluded at 95% CL are shown as a function of the mixing matrix elements squared ratios fl with the three lepton generations, considering a mean proper decay length of 1 m.

Measured mass

Measured mass difference

Measured mass difference

Measured natural width

Measured natural width

The measured inclusive ratio of production cross sections

The measured inclusive ratio of production cross sections

Distributions of $S_{\mathrm{ML}}$ for data, simulated background and signal events with $n_{\mathrm{track}}$ of 4. The distributions are shown for split-SUSY signals with a gluino mass of 2000 GeV and neutralino mass of 1800 GeV. Different gluino proper decay lengths are shown as $c\tau$ in the legend. All distributions are normalized to unity.

Distributions of $S_{\mathrm{ML}}$ for data, simulated background and signal events with $n_{\mathrm{track}}$ of $\geq$ 5. The distributions are shown for split-SUSY signals with a gluino mass of 2000 GeV and neutralino mass of 1900 GeV. Different gluino proper decay lengths are shown as $c\tau$ in the legend. All distributions are normalized to unity.

Distributions of $S_{\mathrm{ML}}$ for data, simulated background and signal events with $n_{\mathrm{track}}$ of $\geq$ 5. The distributions are shown for split-SUSY signals with a gluino mass of 2000 GeV and neutralino mass of 1800 GeV. Different gluino proper decay lengths are shown as $c\tau$ in the legend. All distributions are normalized to unity.

The distribution of $n_{\mathrm{track}}$ in different $S_{\mathrm{ML}}$ regions for simulated background events. Events with 0 $ < S_{\mathrm{ML}} < $ 0.2 (blue), 0.2 $ < S_{\mathrm{ML}} < $ 0.6 (red), and 0.6 $ < S_{\mathrm{ML}} < $ 1.0 (green) are compared. All distributions are normalized to unity. The similar $n_{\mathrm{track}}$ distributions demonstrate that $n_{\mathrm{track}}$ and $S_{\mathrm{ML}}$ are decorrelated.

The distribution of $d_{\mathrm{BV}}$ in $K_{\mathrm{S}}^{\mathrm{0}}$ vertices in data (black) and simulation (purple). The lower panel shows the ratio between data and simulation.

The vertex reconstruction efficiency for artificially displaced vertices in data (black) and simulation (red). In this example, the artificially displaced vertices are corrected to mimic split-SUSY signal events with gluino mass of 2000 GeV and neutralino mass of 1800 GeV.

The ML tagging efficiency for artificially displaced vertices in data (black) and simulation (red). In this example, the artificially displaced vertices are corrected to mimic split-SUSY signal events with gluino mass of 2000 GeV and neutralino mass of 1800 GeV.

Number of predicted and observed events in the control, validation, and search regions. Predictions are calculated using Eqs. (2) and (3) and fitting the data under the background-only hypothesis. Regions are organized by $S_{\mathrm{ML}}$ and $n_{\mathrm{track}}$ values, and region names corresponding with Fig. 7 are given in parentheses. The predicted number of events that pass the $S_{\mathrm{ML}}$ selection and the observed number of events that pass or fail the $S_{\mathrm{ML}}$ selection are shown in seperate rows.

The 95% CL upper limit on the product of the cross section and branching fraction squared for the split-SUSY signal model with a mass splitting of 100 GeV, shown as a function of gluino mass and $c\tau$. The observed (solid black) and expected (dashed red) exclusion curves are overlaid on the limit plot.

The 95% CL upper limit on the product of the cross section and branching fraction squared for the split-SUSY signal model with a mass splitting of 100 GeV, shown as a function of gluino mass and $c\tau$. The observed (solid black) and expected (dashed red) exclusion curves are overlaid on the limit plot.

The 95% CL upper limit on the product of the cross section and branching fraction squared for the split-SUSY model with a $c\tau$ of 10 mm, shown as a function of gluino mass and mass splitting. The observed (solid black) and expected (dashed red) exclusion curves are overlaid on the limit plot.

The 95% CL upper limit on the product of the cross section and branching fraction squared for the split-SUSY model with a $c\tau$ of 10 mm, shown as a function of gluino mass and mass splitting. The observed (solid black) and expected (dashed red) exclusion curves are overlaid on the limit plot.

The 95% CL upper limit on the product of the cross section and branching fraction squared for the GMSB SUSY signal model, shown as a function of gluino mass and $c\tau$. The observed (solid black) and expected (dashed red) exclusion curves are overlaid on the limit plot.

The 95% CL upper limit on the product of the cross section and branching fraction squared for the GMSB SUSY signal model, shown as a function of gluino mass and $c\tau$. The observed (solid black) and expected (dashed red) exclusion curves are overlaid on the limit plot.