cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.94413.v1/t57
title: "Cov_matrix_costhetastar1_Z" of "Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector"

description: Covariance matrix for CTS12_vs_M4l
description: Four lepton mass full run II measurement and SM prediction. ATLAS internal.
DOI: 10.17182/hepdata.94413.v1/t58
title: "Cov_matrix_costhetastar2_Z" of "Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector"

description: Covariance matrix for CTS34_vs_M4l
description: Four lepton mass full run II measurement and SM prediction. ATLAS internal.
DOI: 10.17182/hepdata.94413.v1/t59
title: "Cov_matrix_dy_Z1Z2_Z" of "Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector"

description: Covariance matrix for dYpairs_vs_M4l
description: Four lepton mass full run II measurement and SM prediction. ATLAS internal.
DOI: 10.17182/hepdata.94413.v1/t60
title: "Cov_matrix_dphi_Z1Z2_Z" of "Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector"

description: Covariance matrix for dPhiPairs_vs_M4l
description: Four lepton mass full run II measurement and SM prediction. ATLAS internal.
DOI: 10.17182/hepdata.94413.v1/t61
title: "Cov_matrix_dphi_l1l2_Z" of "Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector"

description: Covariance matrix for dPhiLeadLep_vs_M4l
description: Four lepton mass full run II measurement and SM prediction. ATLAS internal.
DOI: 10.17182/hepdata.94413.v1/t62
title: "Cov_matrix_m4l_ptslice1" of "Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector"

description: Covariance matrix for M4lvPt4lbin
description: Four lepton mass full run II measurement and SM prediction. ATLAS internal.
DOI: 10.17182/hepdata.94413.v1/t63
title: "Cov_matrix_m4l_yslice1" of "Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector"

description: Covariance matrix for M4lvRapiditybin
description: Four lepton mass full run II measurement and SM prediction. ATLAS internal.
DOI: 10.17182/hepdata.94413.v1/t64
title: "EFT_linear" of "Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector"

description: EFT results (linear)
description: Four lepton mass full run II measurement and SM prediction. ATLAS internal.
DOI: 10.17182/hepdata.94413.v1/t65
title: "EFT_full" of "Measurements of differential cross-sections in four-lepton events in 13 TeV proton-proton collisions with the ATLAS detector"

description: EFT results (full)
description: Four lepton mass full run II measurement and SM prediction. ATLAS internal.
DOI: 10.17182/hepdata.94414.v1/t1
title: "Number density and Sum p_T pT&gt;0.15 GeV/c" of "Underlying Event properties in pp collisions at $\sqrt{s}$ = 13 TeV"

description: Fig. 3: Number density $N_{ch}$ (left) and $\\Sigma p_{T}$ (right) distributions as a function of $p_{T}^{leading}$ in Toward, Transverse, and Away regions for $p_{T}^{track} &gt;$ 0.15 GeV/$c$. The shaded areas represent the systematic uncertainties and vertical error bars indicate statistical uncertainties.
description: This article reports measurements characterizing the Underlying Event (UE) associated with hard scatterings at mid-rapidity ($|\\eta| &lt;$ 0.8) in pp collisions at $\\sqrt{s} =$ 13 TeV. The hard scatterings are identified by the leading particle, the charged particle with the highest transverse momentum ($p_{T}^{leading}$) in the event. Charged-particle numbers and summed transverse-momentum densities are measured in different azimuthal regions defined with respect to the leading particle direction: Toward, Transverse, and Away. The Toward and Away regions contain the fragmentation products of the hard scatterings in addition to the UE contribution, whereas particles in the Transverse region are expected to originate predominantly from the UE. The study is performed as a function of $p_{T}^{leading}$ with three different $p_{T}$ thresholds for the associated particles, $p_{T}^{track} &gt;$ 0.15, 0.5, and 1.0 GeV/$c$.
DOI: 10.17182/hepdata.94414.v1/t2
title: "Probability distribution as function of R_T" of "Underlying Event properties in pp collisions at $\sqrt{s}$ = 13 TeV"

description: Fig. 9: R_T probability distribution in the Transverse region for $p_{T}^{track} &gt;$ 0.15 GeV/$c$ and $|\\eta|&lt;$ 0.8. The result (solid circles) is compared to the PYTHIA 8 and EPOS LHC calculations (lines). The red line represents the result of the NBD fit, where the multiplicity is scaled by its mean value, m. The parameter k is related to the standard deviation of the distribution via $\\sigma$ = $\\sqrt{ \\frac{1}{m} + \\frac{1}{k} }$. The open boxes represent the systematic uncertainties and vertical error bars indicate statistical uncertainties. No uncertainties are shown for the MC calculations. The bottom panel shows the ratio between the NBD fit, as well as those of the MC to the data.
description: This article reports measurements characterizing the Underlying Event (UE) associated with hard scatterings at mid-rapidity ($|\\eta| &lt;$ 0.8) in pp collisions at $\\sqrt{s} =$ 13 TeV. The hard scatterings are identified by the leading particle, the charged particle with the highest transverse momentum ($p_{T}^{leading}$) in the event. Charged-particle numbers and summed transverse-momentum densities are measured in different azimuthal regions defined with respect to the leading particle direction: Toward, Transverse, and Away. The Toward and Away regions contain the fragmentation products of the hard scatterings in addition to the UE contribution, whereas particles in the Transverse region are expected to originate predominantly from the UE. The study is performed as a function of $p_{T}^{leading}$ with three different $p_{T}$ thresholds for the associated particles, $p_{T}^{track} &gt;$ 0.15, 0.5, and 1.0 GeV/$c$.
DOI: 10.17182/hepdata.94414.v1/t3
title: "Mean p_T as function of R_T" of "Underlying Event properties in pp collisions at $\sqrt{s}$ = 13 TeV"

description: Fig. 10: $$ in the Transverse region as a function of $R_{T}$ for $p_{T}^{track} &gt;$ 0.15 GeV/$c$ and $|\\eta|&lt;$ 0.8. Data (solid circles) are compared to the results of PYTHIA 8 and EPOS LHC calculations (lines). The open boxes represent the systematic uncertainties and vertical error bars indicate statistical uncertainties. No uncertainties are shown for the MC calculations. The bottom panel shows the ratio of the MC to data.
description: This article reports measurements characterizing the Underlying Event (UE) associated with hard scatterings at mid-rapidity ($|\\eta| &lt;$ 0.8) in pp collisions at $\\sqrt{s} =$ 13 TeV. The hard scatterings are identified by the leading particle, the charged particle with the highest transverse momentum ($p_{T}^{leading}$) in the event. Charged-particle numbers and summed transverse-momentum densities are measured in different azimuthal regions defined with respect to the leading particle direction: Toward, Transverse, and Away. The Toward and Away regions contain the fragmentation products of the hard scatterings in addition to the UE contribution, whereas particles in the Transverse region are expected to originate predominantly from the UE. The study is performed as a function of $p_{T}^{leading}$ with three different $p_{T}$ thresholds for the associated particles, $p_{T}^{track} &gt;$ 0.15, 0.5, and 1.0 GeV/$c$.
DOI: 10.17182/hepdata.94414.v1/t4
title: "Number density and Sum p_T pT&gt;0.5 GeV/c" of "Underlying Event properties in pp collisions at $\sqrt{s}$ = 13 TeV"

description: Fig. A1: Number density $N_{ch}$ (left) and $\\Sigma p_{T}$ (right) distributions as a function of pleadingT and the comparisons to MC predictions in Toward (top), Transverse (middle), and Away (bottom) regions for $p_{T}^{track} &gt;$ 0.5 GeV/$c$. The shaded areas in the upper panels represent the systematic uncertainties and vertical error bars indicate statistical uncertainties. In the lower panels, the shaded areas are the sum in quadrature of statistical and systematic uncertainties from the upper panels. No uncertainties are given for the MC calculations.
description: This article reports measurements characterizing the Underlying Event (UE) associated with hard scatterings at mid-rapidity ($|\\eta| &lt;$ 0.8) in pp collisions at $\\sqrt{s} =$ 13 TeV. The hard scatterings are identified by the leading particle, the charged particle with the highest transverse momentum ($p_{T}^{leading}$) in the event. Charged-particle numbers and summed transverse-momentum densities are measured in different azimuthal regions defined with respect to the leading particle direction: Toward, Transverse, and Away. The Toward and Away regions contain the fragmentation products of the hard scatterings in addition to the UE contribution, whereas particles in the Transverse region are expected to originate predominantly from the UE. The study is performed as a function of $p_{T}^{leading}$ with three different $p_{T}$ thresholds for the associated particles, $p_{T}^{track} &gt;$ 0.15, 0.5, and 1.0 GeV/$c$.
DOI: 10.17182/hepdata.94414.v1/t5
title: "Number density and Sum p_T pT&gt;1.0 GeV/c" of "Underlying Event properties in pp collisions at $\sqrt{s}$ = 13 TeV"

description: Fig. A2: Number density $N_{ch}$ (left) and $\\Sigma p_{T}$ (right) distributions as a function of pleadingT and the comparisons to MC predictions in Toward (top), Transverse (middle), and Away (bottom) regions for $p_{T}^{track} &gt;$ 1.0 GeV/$c$. The shaded areas in the upper panels represent the systematic uncertainties and vertical error bars indicate statistical uncertainties. In the lower panels, the shaded areas are the sum in quadrature of statistical and systematic uncertainties from the upper panels. No uncertainties are given for the MC calculations.
description: This article reports measurements characterizing the Underlying Event (UE) associated with hard scatterings at mid-rapidity ($|\\eta| &lt;$ 0.8) in pp collisions at $\\sqrt{s} =$ 13 TeV. The hard scatterings are identified by the leading particle, the charged particle with the highest transverse momentum ($p_{T}^{leading}$) in the event. Charged-particle numbers and summed transverse-momentum densities are measured in different azimuthal regions defined with respect to the leading particle direction: Toward, Transverse, and Away. The Toward and Away regions contain the fragmentation products of the hard scatterings in addition to the UE contribution, whereas particles in the Transverse region are expected to originate predominantly from the UE. The study is performed as a function of $p_{T}^{leading}$ with three different $p_{T}$ thresholds for the associated particles, $p_{T}^{track} &gt;$ 0.15, 0.5, and 1.0 GeV/$c$.
DOI: 10.17182/hepdata.94415.v1/t1
title: "Figure 2a" of "Search for $t\bar{t}$ resonances in fully hadronic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Acceptance and acceptance times selection efficiency as a function of $m^{gen}_{t\bar{t}}$ in SR$1b$. The acceptance is measured as the fraction of events with two leading truth-contained large-$R$ jets, both satisfying the kinematic requirements, but not containing generator-level electrons or muons, as described in the paper. The acceptance $\times$ efficiency is calculated with respect to the full analysis selections including top- and $b$-tagging requirements on the two leading large-$R$ jets. The $m^{gen}_{t\bar{t}}$ is calculated from the momenta of top and anti-top quarks at the generator level before final-state radiation. The branching fractions of the $t \bar{t}$ into all possible final states are included in the acceptance calculation.
description: This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb$^{-1}$ of proton--proton collision data recorded at a centre-of-mass energy of $\sqrt{s} = 13$ TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a $t\bar{t}$ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new $Z'$ boson in a topcolor-assisted-technicolor model. The $Z'$ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively.
DOI: 10.17182/hepdata.94415.v1/t2
title: "Figure 2b" of "Search for $t\bar{t}$ resonances in fully hadronic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Acceptance and acceptance times selection efficiency as a function of $m^{gen}_{t\bar{t}}$ in SR$2b$. The acceptance is measured as the fraction of events with two leading truth-contained large-$R$ jets, both satisfying the kinematic requirements, but not containing generator-level electrons or muons, as described in the paper. The acceptance $\times$ efficiency is calculated with respect to the full analysis selections including top- and $b$-tagging requirements on the two leading large-$R$ jets. The $m^{gen}_{t\bar{t}}$ is calculated from the momenta of top and anti-top quarks at the generator level before final-state radiation. The branching fractions of the $t \bar{t}$ into all possible final states are included in the acceptance calculation.
description: This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb$^{-1}$ of proton--proton collision data recorded at a centre-of-mass energy of $\sqrt{s} = 13$ TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a $t\bar{t}$ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new $Z'$ boson in a topcolor-assisted-technicolor model. The $Z'$ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively.
DOI: 10.17182/hepdata.94415.v1/t3
title: "Figure 3a" of "Search for $t\bar{t}$ resonances in fully hadronic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Observed $m_{t\bar{t}}^{reco}$ distributions in data for SR$1b$, shown together with the result of the fit with the three-shape-parameter function. The error bars indicate the effect of the fit parameter uncertainty on the background prediction. The bin width of the distributions is chosen to be the same as that used in the background parameterization.
description: This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb$^{-1}$ of proton--proton collision data recorded at a centre-of-mass energy of $\sqrt{s} = 13$ TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a $t\bar{t}$ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new $Z'$ boson in a topcolor-assisted-technicolor model. The $Z'$ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively.
DOI: 10.17182/hepdata.94415.v1/t4
title: "Figure 3b" of "Search for $t\bar{t}$ resonances in fully hadronic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Observed $m_{t\bar{t}}^{reco}$ distributions in data for SR$2b$, shown together with the result of the fit with the three-shape-parameter function. The error bars indicate the effect of the fit parameter uncertainty on the background prediction. The bin width of the distributions is chosen to be the same as that used in the background parameterization.
description: This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb$^{-1}$ of proton--proton collision data recorded at a centre-of-mass energy of $\sqrt{s} = 13$ TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a $t\bar{t}$ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new $Z'$ boson in a topcolor-assisted-technicolor model. The $Z'$ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively.
DOI: 10.17182/hepdata.94415.v1/t5
title: "Figure 4" of "Search for $t\bar{t}$ resonances in fully hadronic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Observed and expected upper limits on the cross-section times branching fraction of the $Z'_{TC2} \rightarrow t\bar{t}$ as a function of the $Z'_{TC2}$ mass ($\Gamma/m = 1.2$%).
description: This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb$^{-1}$ of proton--proton collision data recorded at a centre-of-mass energy of $\sqrt{s} = 13$ TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a $t\bar{t}$ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new $Z'$ boson in a topcolor-assisted-technicolor model. The $Z'$ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively.
DOI: 10.17182/hepdata.94415.v1/t6
title: "Background Fit Parameters" of "Search for $t\bar{t}$ resonances in fully hadronic final states in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Fit parameter values obtained from fits to data in the two signal regions. The fit function is $f(x) = p_{0} (1-x)^{p_{1}} x^{p_{2} + p_{3} \log(x)}$, where $x = m^{reco}_{t\bar{t}}/\sqrt{s}$.
description: This paper presents a search for new heavy particles decaying into a pair of top quarks using 139 fb$^{-1}$ of proton--proton collision data recorded at a centre-of-mass energy of $\sqrt{s} = 13$ TeV with the ATLAS detector at the Large Hadron Collider. The search is performed using events consistent with pair production of high-transverse-momentum top quarks and their subsequent decays into the fully hadronic final states. The analysis is optimized for resonances decaying into a $t\bar{t}$ pair with mass above 1.4 TeV, exploiting a dedicated multivariate technique with jet substructure to identify hadronically decaying top quarks using large-radius jets and evaluating the background expectation from data. No significant deviation from the background prediction is observed. Limits are set on the production cross-section times branching fraction for the new $Z'$ boson in a topcolor-assisted-technicolor model. The $Z'$ boson masses below 3.9 and 4.7 TeV are excluded at 95% confidence level for the decay widths of 1% and 3%, respectively.
DOI: 10.17182/hepdata.94444.v1/t1
title: "Table 1: Results for the ratio of braching fraction products" of "Observation of the B$^0_\mathrm{s}$ $\to$ X(3872)$\phi$ decay"

description: The measured ratio of branching fraction products
description: CERN-LHC-CMS. Observation of the B0s to X(3872) phi decay.
DOI: 10.17182/hepdata.94786.v1/t1
title: "Figure 2 (Signal Regions)" of "Search for new non-resonant phenomena in high-mass dilepton final states with the ATLAS detector"

description: Expected and observed event yields in each signal bin.
description: CERN-LHC. Limits set on 2q2l contact interactions, and limits set on the visible cross section times branching ratio to two leptons, in proton-proton collisions at a centre-of-mass energy of 13 TeV with 139 fb$^{-1}$ of data collected by ATLAS. The final states used are 2 electrons, and 2 muons. This result uses the same dataset, with the same acceptance and efficiency, as the earlier search for high-mass dielectron and dimuon resonances: https://www.hepdata.net/record/88425.

The ee-const fiducial region is defined as:
- Two electrons, any charge
- Electron $E_T&gt;30$ GeV
- Electron $|\eta|&gt;1.37$ or $1.52&lt;|\eta|&lt;2.47$
- Highest $E_T$ electron pair selected
- The electron pair's invariant mass $220030$ GeV
- Electron $|\eta|&gt;1.37$ or $1.52&lt;|\eta|&lt;2.47$
- Highest $E_T$ electron pair selected
- The electron pair's invariant mass $277030$ GeV
- Muon $|\eta|&gt;2.5$
- Highest $p_T$ opposite charged muon pair selected
- The muon pair's invariant mass $207030$ GeV
- Muon $|\eta|&gt;2.5$
- Highest $p_T$ opposite charged muon pair selected
- The muon pair's invariant mass $2570