Two-dimensional distributions of the leading electron vs the leading muon $|d_{0}|$, for the events that pass the e$\mu$ preselection. Data events and $\tilde{t} \to b\ell$ signal events with a $\tilde{t}$ mass of 700 GeV and a proper decay length of 10 mm that correspond to 2018 data-taking conditions are shown. In each $|d_{0}|$-$|d_{0}|$ bin, the number of events divided by the bin area is plotted. The inclusive signal region covers the region between 100 $\mu$m and 10 cm in each $|d_{0}|$ variable shown.

Two-dimensional distributions of the leading vs the subleading electron $|d_0|$, for the events that pass the ee preselection. Data events and $\tilde{t} \to b\ell$ signal events with a $\tilde{t}$ mass of 700 GeV and a proper decay length of 10 mm that correspond to 2018 data-taking conditions are shown. In each $|d_{0}|$-$|d_{0}|$ bin, the number of events divided by the bin area is plotted. The inclusive signal region covers the region between 100 $\mu$m and 10 cm in each $|d_{0}|$ variable shown.

Two-dimensional distributions of the leading vs the subleading muon $|d_{0}|$, for the events that pass the $\mu\mu$ preselection. Data events and $\tilde{t} \to b\ell$ signal events with a $\tilde{t}$ mass of 700 GeV and a proper decay length of 10 mm that correspond to 2018 data-taking conditions are shown. In each $|d_{0}|$-$|d_{0}|$ bin, the number of events divided by the bin area is plotted. The inclusive signal region covers the region between 100 $\mu$m and 10 cm in each $|d_{0}|$ variable shown.

The number of observed and estimated background events in each channel and SR, with a representative signal overlaid. For each background estimate and signal yield, the total uncertainty (statistical plus systematic) is given. The distributions shown correspond to the events before the final maximum likelihood fit to the data.

The number of observed and estimated background events in each channel and SR in 2016, with a representative signal overlaid. For each background estimate and signal yield, the total uncertainty is given. The distributions shown correspond to the events before the final maximum likelihood fit to the data.

The number of observed and estimated background events in each channel and SR in 2017 and 2018, with a representative signal overlaid. For each background estimate and signal yield, the total uncertainty is given. The distributions shown correspond to the events before the final maximum likelihood fit to the data.

The observed 95% CL upper limits on the long-lived top squark production cross section, in the $c\tau_0$ -- mass plane, for the three channels combined. The $\tilde{t} \to b\ell $ process is shown. These limits assume $\mathcal{B}(\tilde{t} \to b\ell)$ is 100%, and each lepton has an equal probability of being an electron, a muon, or a tau lepton. The area to the left of the black curve represents the observed exclusion region, and the dashed red lines indicate the expected limits and their 68% confidence intervals.

The observed 95% CL upper limits on the long-lived top squark production cross section, in the $c\tau_0$ -- mass plane, for the three channels combined. The $\tilde{t} \to d\ell$ process is shown. These limits assume $\mathcal{B}(\tilde{t} \to d\ell)$ is 100%, and each lepton has an equal probability of being an electron, a muon, or a tau lepton. The area to the left of the black curve represents the observed exclusion region, and the dashed red lines indicate the expected limits and their 68% confidence intervals.

The observed 95% CL upper limits on the long-lived top squark production cross section, in the $c\tau_0$ -- mass plane, for the three channels combined. The $\tilde{t} \to b\ell $ process is shown. These limits assume $\mathcal{B}(\tilde{t} \to b\ell)$ is 100%, and each lepton has an equal probability of being an electron, a muon, or a tau lepton. The area to the left of the black curve represents the observed exclusion region, and the dashed red lines indicate the expected limits and their 68% confidence intervals.

The observed 95% CL upper limits on the long-lived top squark production cross section, in the $c\tau_0$ -- mass plane, for the three channels combined. The $\tilde{t} \to d\ell$ process is shown. These limits assume $\mathcal{B}(\tilde{t} \to d\ell)$ is 100%, and each lepton has an equal probability of being an electron, a muon, or a tau lepton. The area to the left of the black curve represents the observed exclusion region, and the dashed red lines indicate the expected limits and their 68% confidence intervals.

The 95% CL upper limits on the long-lived top squark proper decay length ($c\tau_0$) as a function of its mass, for the e$\mu$, ee, and $\mu\mu$ channels, and their combination. The $\tilde{t} \to b\ell $ process is shown. These limits assume $\mathcal{B}(\tilde{t} \to b\ell)$ is 100%, and each lepton has an equal probability of being an electron, a muon, or a tau lepton.

The 95% CL upper limits on the long-lived top squark proper decay length ($c\tau_0$) as a function of its mass, for the e$\mu$, ee, and $\mu\mu$ channels, and their combination. The $\tilde{t} \to d\ell$ process is shown. These limits assume $\mathcal{B}(\tilde{t} \to d\ell)$ is 100%, and each lepton has an equal probability of being an electron, a muon, or a tau lepton.

The 95% CL constraints on the long-lived slepton $c\tau_{0}$ and mass. The $\tilde{\tau}$ and co-NLSP limits are shown for the three channels combined, while the $\tilde{e}$ and $\tilde{\mu}$ NLSP limits are shown for the ee and $\mu\mu$ channels, respectively. These limits assume that the superpartners of the left- and right-handed leptons are degenerate in mass and $\mathcal{B}(\tilde{\ell} \to \ell\tilde{G})$ is 100%. The area to the left of the solid curves represents the observed exclusion region, and the dashed lines indicate the expected limits.

The observed 95% CL upper limits on the long-lived slepton production cross section, in the $c\tau_0$ -- mass plane. The co-NLSP limits are shown for the three channels combined. These limits assume that the superpartners of the left- and right-handed leptons are degenerate in mass and $\mathcal{B}(\tilde{\ell} \to \ell\tilde{G})$ is 100%. The area to the left of the black curve represents the observed exclusion region, and the dashed red lines indicate the expected limits and their 68% confidence intervals.

The observed 95% CL upper limits on the long-lived slepton production cross section, in the $c\tau_0$ -- mass plane. The co-NLSP limits are shown for the three channels combined. These limits assume that the superpartners of the left- and right-handed leptons are degenerate in mass and $\mathcal{B}(\tilde{\ell} \to \ell\tilde{G})$ is 100%. The area to the left of the black curve represents the observed exclusion region, and the dashed red lines indicate the expected limits and their 68% confidence intervals.

The 95% CL upper limits on the $\mathrm{H} \to \mathrm{S}\mathrm{S}, \mathrm{S} \to \ell^{+}\ell^{-}$ branching fraction as a function of $c\tau_0$, for a Higgs boson with a mass of 125 GeV and a long-lived scalar with a mass of 30 GeV or 50 GeV, for the three channels combined. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two electrons or two muons. The area above the solid (dashed) curve represents the observed (expected) exclusion region.

The 95% CL upper limits on the product of the cross section and branching fraction $\mathrm{H} \to \mathrm{S}\mathrm{S}, \mathrm{S} \to \ell^{+}\ell^{-}$ as a function of $c\tau_0$, for a 300 GeV Higgs boson and several long-lived scalar masses, for the three channels combined. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two electrons or two muons. The area above the solid (dashed) curves represents the observed (expected) exclusion region.

The 95% CL upper limits on the product of the cross section and branching fraction $\mathrm{H} \to \mathrm{S}\mathrm{S}, \mathrm{S} \to \ell^{+}\ell^{-}$ as a function of $c\tau_0$, for a 400 GeV Higgs boson and several long-lived scalar masses, for the three channels combined. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two electrons or two muons. The area above the solid (dashed) curves represents the observed (expected) exclusion region.

The 95% CL upper limits on the product of the cross section and branching fraction $\mathrm{H} \to \mathrm{S}\mathrm{S}, \mathrm{S} \to \ell^{+}\ell^{-}$ as a function of $c\tau_0$, for a 600 GeV Higgs boson and several long-lived scalar masses, for the three channels combined. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two electrons or two muons. The area above the solid (dashed) curves represents the observed (expected) exclusion region.

The 95% CL upper limits on the product of the cross section and branching fraction $\mathrm{H} \to \mathrm{S}\mathrm{S}, \mathrm{S} \to \ell^{+}\ell^{-}$ as a function of $c\tau_0$, for a 800 GeV Higgs boson and several long-lived scalar masses, for the three channels combined. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two electrons or two muons. The area above the solid (dashed) curves represents the observed (expected) exclusion region.

The 95% CL upper limits on the product of the cross section and branching fraction $\mathrm{H} \to \mathrm{S}\mathrm{S}, \mathrm{S} \to \ell^{+}\ell^{-}$ as a function of $c\tau_0$, for a 1000 GeV Higgs boson and several long-lived scalar masses, for the three channels combined. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two electrons or two muons. The area above the solid (dashed) curves represents the observed (expected) exclusion region.

The 95% CL upper limits on the $\mathrm{H} \to \mathrm{S}\mathrm{S} \to 4\ell$ branching fraction as a function of $c\tau_0$, for a Higgs boson with a mass of 125 GeV and a long-lived scalar with a mass of 30 GeV or 50 GeV, for the ee channel only. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two electrons. The area above the solid (dashed) curve represents the observed (expected) exclusion region. The curves are not smooth because very few ee channel events pass the preselection for the Higgs boson and scalar masses shown in this figure.

The 95% CL upper limits on the product of the cross section and branching fraction $\mathrm{H} \to \mathrm{S}\mathrm{S} \to 4\ell$ as a function of $c\tau_0$, for a 600 GeV Higgs boson and several long-lived scalar masses, for the ee channel only. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two electrons. The area above the solid (dashed) curves represents the observed (expected) exclusion region.

The 95% CL upper limits on the product of the cross section and branching fraction $\mathrm{H} \to \mathrm{S}\mathrm{S} \to 4\ell$ as a function of $c\tau_0$, for a 1000 GeV Higgs boson and several long-lived scalar masses, for the ee channel only. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two electrons. The area above the solid (dashed) curves represents the observed (expected) exclusion region.

The 95% CL upper limits on the $\mathrm{H} \to \mathrm{S}\mathrm{S} \to 4\ell$ branching fraction as a function of $c\tau_0$, for a Higgs boson with a mass of 125 GeV and a long-lived scalar with a mass of 30 GeV or 50 GeV, for the $\mu\mu$ channel only. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two muons. The area above the solid (dashed) curve represents the observed (expected) exclusion region.

The 95% CL upper limits on the product of the cross section and branching fraction $\mathrm{H} \to \mathrm{S}\mathrm{S} \to 4\ell$ as a function of $c\tau_0$, for a 600 GeV Higgs boson and several long-lived scalar masses, for the $\mu\mu$ channel only. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two muons. The area above the solid (dashed) curves represents the observed (expected) exclusion region.

The 95% CL upper limits on the product of the cross section and branching fraction $\mathrm{H} \to \mathrm{S}\mathrm{S} \to 4\ell$ as a function of $c\tau_0$, for a 1000 GeV Higgs boson and several long-lived scalar masses, for the $\mu\mu$ channel only. These limits assume that $\mathcal{B}(H \to SS)=100\%$ and each S has a 50% probability of decaying to two muons. The area above the solid (dashed) curves represents the observed (expected) exclusion region.