cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.168229.v1/t3
title: "Figure 2c" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Selection efficiency times acceptance (Eff x Acc) for the ljets final state as a function of the tt̄ invariant mass at the parton level before the emission of FSR, for the (a) Z', (b) G<sub>KK</sub>, and (c) g<sub>KK</sub> signals. The selections in the resolved topology only (short-dashed magenta), the merged topology only (dashed blue) and the inclusive topology (solid black) are shown. The error bars correspond to the statistical uncertainty. All tt̄ decay modes are considered.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t4
title: "Figure 3a" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Distribution of the reconstructed Δφ / π in (a) the signal regions and (b) the validation regions of the 2-lepton channel. Each bin corresponds to one of the signal or validation regions. The distributions and the uncertainty band are obtained before the final fit to the data (pre-fit). "Other Bkg." combines the t̄t + V, t̄t + H, diboson and fakes backgrounds together. In (a), a 3 TeV Z' signal (green dashed and dotted line), a 1 TeV G<sub>KK</sub> signal (blue dotted line) and a 2 TeV g<sub>KK</sub> signal (red short-dashed and dotted line) are overlaid for illustration purposes, normalised to the total background. The lower panels show the ratio of the data to the total SM background prediction. The error bands include both the statistical and systematic uncertainties.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t5
title: "Figure 6 (SR1b resolved)" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Post-fit distributions of the reconstructed m<sub>t̄t</sub> for the three signal regions of the 1-lepton channel, after performing the profile-likelihood fit under the background-only hypothesis in the 3+5 signal regions of the 1-lepton and 2-lepton channels, respectively. The overflow is added to the final bins. The lower panel shows the pulls from the fit (red line), where the pull in each bin is defined as (n<sub>obs</sub>-n<sub>pred</sub>)/√n<sub>obs</sub>, and n<sub>obs</sub> and n<sub>pred</sub> refer to the number of observed events in data and the number of predicted events, respectively. "Vjets" refers to the Z + jets and W+ jets backgrounds, whilst "Other Bkg." combines the t̄t + V, t̄t + H, diboson, and fakes backgrounds together.

The table below shows the total number of events in each bin, and is not normalised by bin width.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t6
title: "Figure 6 (SR2b resolved)" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Post-fit distributions of the reconstructed m<sub>t̄t</sub> for the three signal regions of the 1-lepton channel, after performing the profile-likelihood fit under the background-only hypothesis in the 3+5 signal regions of the 1-lepton and 2-lepton channels, respectively. The overflow is added to the final bins. The lower panel shows the pulls from the fit (red line), where the pull in each bin is defined as (n<sub>obs</sub>-n<sub>pred</sub>)/√n<sub>obs</sub>, and n<sub>obs</sub> and n<sub>pred</sub> refer to the number of observed events in data and the number of predicted events, respectively. "Vjets" refers to the Z + jets and W+ jets backgrounds, whilst "Other Bkg." combines the t̄t + V, t̄t + H, diboson, and fakes backgrounds together.

The table below shows the total number of events in each bin, and is not normalised by bin width.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t7
title: "Figure 6 (SR merged)" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Post-fit distributions of the reconstructed m<sub>t̄t</sub> for the three signal regions of the 1-lepton channel, after performing the profile-likelihood fit under the background-only hypothesis in the 3+5 signal regions of the 1-lepton and 2-lepton channels, respectively. The overflow is added to the final bins. The lower panel shows the pulls from the fit (red line), where the pull in each bin is defined as (n<sub>obs</sub>-n<sub>pred</sub>)/√n<sub>obs</sub>, and n<sub>obs</sub> and n<sub>pred</sub> refer to the number of observed events in data and the number of predicted events, respectively. "Vjets" refers to the Z + jets and W+ jets backgrounds, whilst "Other Bkg." combines the t̄t + V, t̄t + H, diboson, and fakes backgrounds together.

The table below shows the total number of events in each bin, and is not normalised by bin width.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t8
title: "Figure 7 (SR1)" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Post-fit distributions of the reconstructed m<sub>llbb</sub> for the five signal regions of the 2-lepton channel, after performing the profile-likelihood fit under the background-only hypothesis in the 3+5 signal regions of the 1-lepton and 2-lepton channels, respectively. The overflow is added to the final bins. The lower panel shows the pulls from the fit (red line), where the pull in each bin is defined as (n<sub>obs</sub>-n<sub>pred</sub>)/√n<sub>obs</sub>, and n<sub>obs</sub> and n<sub>pred</sub> refer to the number of observed events in data and the number of predicted events, respectively. "Other Bkg." combines the t̄t + V, t̄t + H, diboson, and fakes backgrounds together.

The table below shows the total number of events in each bin, and is not normalised by bin width.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t9
title: "Figure 7 (SR2)" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Post-fit distributions of the reconstructed m<sub>llbb</sub> for the five signal regions of the 2-lepton channel, after performing the profile-likelihood fit under the background-only hypothesis in the 3+5 signal regions of the 1-lepton and 2-lepton channels, respectively. The overflow is added to the final bins. The lower panel shows the pulls from the fit (red line), where the pull in each bin is defined as (n<sub>obs</sub>-n<sub>pred</sub>)/√n<sub>obs</sub>, and n<sub>obs</sub> and n<sub>pred</sub> refer to the number of observed events in data and the number of predicted events, respectively. "Other Bkg." combines the t̄t + V, t̄t + H, diboson, and fakes backgrounds together.

The table below shows the total number of events in each bin, and is not normalised by bin width.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t10
title: "Figure 7 (SR3)" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Post-fit distributions of the reconstructed m<sub>llbb</sub> for the five signal regions of the 2-lepton channel, after performing the profile-likelihood fit under the background-only hypothesis in the 3+5 signal regions of the 1-lepton and 2-lepton channels, respectively. The overflow is added to the final bins. The lower panel shows the pulls from the fit (red line), where the pull in each bin is defined as (n<sub>obs</sub>-n<sub>pred</sub>)/√n<sub>obs</sub>, and n<sub>obs</sub> and n<sub>pred</sub> refer to the number of observed events in data and the number of predicted events, respectively. "Other Bkg." combines the t̄t + V, t̄t + H, diboson, and fakes backgrounds together.

The table below shows the total number of events in each bin, and is not normalised by bin width.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t11
title: "Figure 7 (SR4)" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Post-fit distributions of the reconstructed m<sub>llbb</sub> for the five signal regions of the 2-lepton channel, after performing the profile-likelihood fit under the background-only hypothesis in the 3+5 signal regions of the 1-lepton and 2-lepton channels, respectively. The overflow is added to the final bins. The lower panel shows the pulls from the fit (red line), where the pull in each bin is defined as (n<sub>obs</sub>-n<sub>pred</sub>)/√n<sub>obs</sub>, and n<sub>obs</sub> and n<sub>pred</sub> refer to the number of observed events in data and the number of predicted events, respectively. "Other Bkg." combines the t̄t + V, t̄t + H, diboson, and fakes backgrounds together.

The table below shows the total number of events in each bin, and is not normalised by bin width.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t12
title: "Figure 7 (SR5)" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Post-fit distributions of the reconstructed m<sub>llbb</sub> for the five signal regions of the 2-lepton channel, after performing the profile-likelihood fit under the background-only hypothesis in the 3+5 signal regions of the 1-lepton and 2-lepton channels, respectively. The overflow is added to the final bins. The lower panel shows the pulls from the fit (red line), where the pull in each bin is defined as (n<sub>obs</sub>-n<sub>pred</sub>)/√n<sub>obs</sub>, and n<sub>obs</sub> and n<sub>pred</sub> refer to the number of observed events in data and the number of predicted events, respectively. "Other Bkg." combines the t̄t + V, t̄t + H, diboson, and fakes backgrounds together.

The table below shows the total number of events in each bin, and is not normalised by bin width.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t13
title: "Figure 10a" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Observed (pink data points) and expected (black dashed line) upper limits on the signal cross-section times branching ratio to tt̄ for the (a) Z', (b) G<sub>KK</sub>, and (c) g<sub>KK</sub> signals at 95&percnt; CL. Approximate limits for intermediate masses are interpolated between the tested mass hypotheses. For the G<sub>KK</sub> signal in (b), the detector resolution is finer than the grid spacing, so the interpolation is only for display purposes. The theory predictions for the production cross-section times branching ratio at the corresponding masses are also shown in (a) for a Z' with a width of 3&percnt; (blue line) and a Z' with a width of 1.2&percnt; (dark red line), in (b) a G<sub>KK</sub> with a width ranging from 3&percnt;–6&percnt;, and in (c) a g<sub>KK</sub> with a width of 30&percnt;. Also shown is the relative contribution of the 1-lepton (red dashed and dotted line) and 2-lepton (purple long-dashed and dotted line) channels to the expected combination limits.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.
DOI: 10.17182/hepdata.168229.v1/t14
title: "Figure 10b" of "Search for ttbar resonances in final states with exactly one or two leptons using 140 fb$^{-1}$ of pp collision data at $\sqrt{s}=13$ TeV with the ATLAS experiment"

description: Observed (pink data points) and expected (black dashed line) upper limits on the signal cross-section times branching ratio to tt̄ for the (a) Z', (b) G<sub>KK</sub>, and (c) g<sub>KK</sub> signals at 95&percnt; CL. Approximate limits for intermediate masses are interpolated between the tested mass hypotheses. For the G<sub>KK</sub> signal in (b), the detector resolution is finer than the grid spacing, so the interpolation is only for display purposes. The theory predictions for the production cross-section times branching ratio at the corresponding masses are also shown in (a) for a Z' with a width of 3&percnt; (blue line) and a Z' with a width of 1.2&percnt; (dark red line), in (b) a G<sub>KK</sub> with a width ranging from 3&percnt;–6&percnt;, and in (c) a g<sub>KK</sub> with a width of 30&percnt;. Also shown is the relative contribution of the 1-lepton (red dashed and dotted line) and 2-lepton (purple long-dashed and dotted line) channels to the expected combination limits.
description: A search for heavy spin-1 and spin-2 resonances decaying into a top-antitop-quark pair has been performed with 140 fb$^{-1}$ of proton-proton collision data collected by the ATLAS experiment at the Large Hadron Collider at a centre-of-mass energy of $\sqrt{s}=13$ TeV. Final states with either exactly one electron or muon, or exactly two leptons ($ee$, $\mu\mu$ or $e\mu$), large missing transverse momentum, and two jets, at least one of which must be identified as likely containing a b-hadron decay, are considered. The search targets resonances with both narrow and broad widths relative to the detector resolution, and with masses in the range of 0.4-5.0 TeV. No significant deviation from the Standard Model prediction is observed. Exclusion limits are set on the production cross-section times branching ratio for hypothetical $Z'$ bosons, Kaluza–Klein gravitons, and Kaluza–Klein gluons that decay into top-quark pairs.