cometadata/datacite-titles-descriptions-related-identifiers huggingface dataset:
DOI: 10.17182/hepdata.105864.v2/t20
title: "Table 20" of "Search for Higgs boson pair production in the two bottom quarks plus two photons final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Cutflow for resonant signal sample, with $m_{X}$ = 300 GeV, yields are normalized to 139 $fb^{-1}$.
description: CERN-LHC, ATLAS.
Limits on pair production of Higgs bosons in the final state with two bottom quarks plus two photons.
The search is based on 139 $fb^{-1}$ of pp collisions at $\sqrt{s}$ = 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider.
Data include exactly two b-tagged jets with a 77% working point and two well-identified isolated photons.
The search is sensitive to both resonant and nonresonant production of Higgs boson pairs.
Both the nonresonant and resonant searches employ multivariate analysis techniques to select events. Events are selected if they satisfy a common set of preselection requirements; then they are required to fulfill different requirements for the nonresonant and the resonant search. These further requirements are based on the BDT scores shown in tables 1 to 6. 
$m^{*}_{b\bar{b}\gamma\gamma} = m_{b\bar{b}\gamma\gamma} - m_{b\bar{b}} - m_{\gamma\gamma} + 250$ GeV is used to implement selection criteria for both the nonresonant and resonant analyses. 

Preselection:
- there are at least two photons passing the tight and isolated object selection criteria;
- the di-photon invariant mass, built with the two leading photons, satisfies 105 GeV &lt; $m_{\gamma\gamma}$ &lt; 160 GeV;
- the leading (sub-leading) photon $p_{T}$ is larger than 35% (25%) of the mass of the di-photon system;
- there are exactly two b-tagged jets at 77% working point;
- no electrons or muons are present;
- fewer than six central (|$\eta$|&lt; 2.5) jets are required, to help rejecting $t\bar{t}H$ events where the top quarks decay hadronically.


Non-resonant selection:
Following the preselection, events are divided into two regions using the value of $m^{*}_{b\bar{b}\gamma\gamma}$. High mass region with $m^{*}_{b\bar{b}\gamma\gamma} &gt; 350$ GeV targets the SM signal, while low mass region with $m^{*}_{b\bar{b}\gamma\gamma} &lt; 350$ GeV targets BSM signals. In each mass region, a dedicated BDT is trained using XGBoost, and two categories are defined based on the BDT score. Events with a BDT score below 0.881 in the low mass region or below 0.857 in the high mass region are discarded.

Resonant selection:
Using the TMVA toolkit, two BDTs are trained to better separate the signal from backgrounds of different nature (the ${\gamma\gamma}$ plus the ${t\bar{t}\gamma\gamma}$ backgrounds and the single Higgs boson background, where ZH and ${t\bar{t}H}$ production modes are the dominant resonant backgrounds). The combined BDT score of an event ($BDT_{tot}$) is obtained by combining the two BDT scores in quadrature. Only events passing a minimum requirement on the value of the $BDT_{tot}$ are considered in the analysis. Events with a BDT score below 0.85 for $m_{X}$ = 300 GeV or below 0.75 for $m_{X}$ = 500 GeV are discarded. The BDT thresholds for other $m_{X}$ points are listed in Table 31.
DOI: 10.17182/hepdata.105864.v2/t21
title: "Table 21" of "Search for Higgs boson pair production in the two bottom quarks plus two photons final state in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector"

description: Cutflow for resonant signal sample, with $m_{X}$ = 500 GeV, yields are normalized to 139 $fb^{-1}$.
description: CERN-LHC, ATLAS.
Limits on pair production of Higgs bosons in the final state with two bottom quarks plus two photons.
The search is based on 139 $fb^{-1}$ of pp collisions at $\sqrt{s}$ = 13 TeV recorded by the ATLAS detector at the CERN Large Hadron Collider.
Data include exactly two b-tagged jets with a 77% working point and two well-identified isolated photons.
The search is sensitive to both resonant and nonresonant production of Higgs boson pairs.
Both the nonresonant and resonant searches employ multivariate analysis techniques to select events. Events are selected if they satisfy a common set of preselection requirements; then they are required to fulfill different requirements for the nonresonant and the resonant search. These further requirements are based on the BDT scores shown in tables 1 to 6. 
$m^{*}_{b\bar{b}\gamma\gamma} = m_{b\bar{b}\gamma\gamma} - m_{b\bar{b}} - m_{\gamma\gamma} + 250$ GeV is used to implement selection criteria for both the nonresonant and resonant analyses. 

Preselection:
- there are at least two photons passing the tight and isolated object selection criteria;
- the di-photon invariant mass, built with the two leading photons, satisfies 105 GeV &lt; $m_{\gamma\gamma}$ &lt; 160 GeV;
- the leading (sub-leading) photon $p_{T}$ is larger than 35% (25%) of the mass of the di-photon system;
- there are exactly two b-tagged jets at 77% working point;
- no electrons or muons are present;
- fewer than six central (|$\eta$|&lt; 2.5) jets are required, to help rejecting $t\bar{t}H$ events where the top quarks decay hadronically.


Non-resonant selection:
Following the preselection, events are divided into two regions using the value of $m^{*}_{b\bar{b}\gamma\gamma}$. High mass region with $m^{*}_{b\bar{b}\gamma\gamma} &gt; 350$ GeV targets the SM signal, while low mass region with $m^{*}_{b\bar{b}\gamma\gamma} &lt; 350$ GeV targets BSM signals. In each mass region, a dedicated BDT is trained using XGBoost, and two categories are defined based on the BDT score. Events with a BDT score below 0.881 in the low mass region or below 0.857 in the high mass region are discarded.

Resonant selection:
Using the TMVA toolkit, two BDTs are trained to better separate the signal from backgrounds of different nature (the ${\gamma\gamma}$ plus the ${t\bar{t}\gamma\gamma}$ backgrounds and the single Higgs boson background, where ZH and ${t\bar{t}H}$ production modes are the dominant resonant backgrounds). The combined BDT score of an event ($BDT_{tot}$) is obtained by combining the two BDT scores in quadrature. Only events passing a minimum requirement on the value of the $BDT_{tot}$ are considered in the analysis. Events with a BDT score below 0.85 for $m_{X}$ = 300 GeV or below 0.75 for $m_{X}$ = 500 GeV are discarded. The BDT thresholds for other $m_{X}$ points are listed in Table 31.
DOI: 10.25549/vercoutere-ouc110611172
title: Portrait of a woman with brown hair holding a drape

description: Portrait from buttocks to head of a seated, nude female with brown hair; blue eyes; red lips; holding brown, tan, and red drapes with a green background. Notes left by OT: When he first came in the shop was diagnosed as schizophrenic, paranoid and his paintings reflected the diagnosis. His work was extremely fragmented with lips, part of a torso, and the ever present, all seeing eye. The eye persisted as part of his artwork until the paranoia dimished. After several months of painting a scarab appeared on the forehead of a face which he was obsessed with. He refused to tell me who she was. Whoever she was, the face was firmly implanted in his memory. Even as he seemed to improve and the syptoms of his paranoia diminished the image persisted. I had seen the scarab appear in other mental patients' painting but never knew "why a scarab?" As he progressed the scarab was replaced by a simple forehead dot. He eventually painted a relaxed, composed, beautiful protrait of the woman in question.
DOI: 10.17182/hepdata.105865.v1/t1
title: "results" of "Inclusive and differential cross section measurements of single top quark production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Numerical results of inclusive cross section measurements. Each row represents a measurement: "tZq" for fully inclusive, "tZq_top" for the top quark channel, "tZq_antitop" for the top antiquark channel, "ratio" for the ratio measurement. The columns are the central value, statistical error up/down, systematic error up/down. All values are in fb, except for the ratio (dimensionless).
description: Inclusive and differential cross sections of single top quark production in association with a Z boson are measured in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of $138\ \mathrm{fb}^{-1}$ recorded by the CMS experiment. Events are selected based on the presence of three leptons, electrons or muons, associated with leptonic Z boson and top quark decays. The measurement yields an inclusive cross section of $87.9\text{ }_{-7.3}^{+7.5}\text{ (stat) }_{-6.0}^{+7.3}\text{ (syst) fb}$ for a dilepton invariant mass greater than 30 GeV, in agreement with standard model (SM) calculations. The ratio between the cross sections for the top quark and the top antiquark production in association with a Z boson is measured as $2.37\text{ }_{-0.42}^{+0.56}\text{ (stat) }_{-0.13}^{+0.27}\text{ (syst)}$. Differential measurements at parton and particle levels are performed for the first time. Several kinematic observables are considered to study the modeling of the process. Results are compared to theoretical predictions with different assumptions on the source of the initial-state b quark and found to be in agreement, within the uncertainties. Additionally, the spin asymmetry, which is sensitive to the top quark polarization, is determined from the differential distribution of the polarization angle at parton level to be $0.58\text{ }^{+0.15}_{-0.16} \text{ (stat) } {\pm 0.06}\text{ (syst)}$, in agreement with SM predictions using the MGvATNLO event generator at next-to-leading order.
DOI: 10.17182/hepdata.105865.v1/t2
title: "impacts" of "Inclusive and differential cross section measurements of single top quark production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Numerical representation of impact plot.
description: Inclusive and differential cross sections of single top quark production in association with a Z boson are measured in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of $138\ \mathrm{fb}^{-1}$ recorded by the CMS experiment. Events are selected based on the presence of three leptons, electrons or muons, associated with leptonic Z boson and top quark decays. The measurement yields an inclusive cross section of $87.9\text{ }_{-7.3}^{+7.5}\text{ (stat) }_{-6.0}^{+7.3}\text{ (syst) fb}$ for a dilepton invariant mass greater than 30 GeV, in agreement with standard model (SM) calculations. The ratio between the cross sections for the top quark and the top antiquark production in association with a Z boson is measured as $2.37\text{ }_{-0.42}^{+0.56}\text{ (stat) }_{-0.13}^{+0.27}\text{ (syst)}$. Differential measurements at parton and particle levels are performed for the first time. Several kinematic observables are considered to study the modeling of the process. Results are compared to theoretical predictions with different assumptions on the source of the initial-state b quark and found to be in agreement, within the uncertainties. Additionally, the spin asymmetry, which is sensitive to the top quark polarization, is determined from the differential distribution of the polarization angle at parton level to be $0.58\text{ }^{+0.15}_{-0.16} \text{ (stat) } {\pm 0.06}\text{ (syst)}$, in agreement with SM predictions using the MGvATNLO event generator at next-to-leading order.
DOI: 10.17182/hepdata.105865.v1/t3
title: "table_signalregion_cat1_prefit" of "Inclusive and differential cross section measurements of single top quark production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Simulated signal, total background, and observed data in the signal category with exactly 1 b jet and 2-3 jets for the three data-taking years combined. For the uncertainty on the signal and background, both the total (systematic+statistical) and statistical uncertainties are provided. The uncertainty on the data is the (statistical) Poisson uncertainty. Note that this is the prefit version.
description: Inclusive and differential cross sections of single top quark production in association with a Z boson are measured in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of $138\ \mathrm{fb}^{-1}$ recorded by the CMS experiment. Events are selected based on the presence of three leptons, electrons or muons, associated with leptonic Z boson and top quark decays. The measurement yields an inclusive cross section of $87.9\text{ }_{-7.3}^{+7.5}\text{ (stat) }_{-6.0}^{+7.3}\text{ (syst) fb}$ for a dilepton invariant mass greater than 30 GeV, in agreement with standard model (SM) calculations. The ratio between the cross sections for the top quark and the top antiquark production in association with a Z boson is measured as $2.37\text{ }_{-0.42}^{+0.56}\text{ (stat) }_{-0.13}^{+0.27}\text{ (syst)}$. Differential measurements at parton and particle levels are performed for the first time. Several kinematic observables are considered to study the modeling of the process. Results are compared to theoretical predictions with different assumptions on the source of the initial-state b quark and found to be in agreement, within the uncertainties. Additionally, the spin asymmetry, which is sensitive to the top quark polarization, is determined from the differential distribution of the polarization angle at parton level to be $0.58\text{ }^{+0.15}_{-0.16} \text{ (stat) } {\pm 0.06}\text{ (syst)}$, in agreement with SM predictions using the MGvATNLO event generator at next-to-leading order.
DOI: 10.17182/hepdata.105865.v1/t11
title: "parton_abs_ZPt_covariance_syst" of "Inclusive and differential cross section measurements of single top quark production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Covariance matrix for the measurement of the differential cross sections as a function of the transverse momentum of the Z boson candidate at parton level.
description: Inclusive and differential cross sections of single top quark production in association with a Z boson are measured in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of $138\ \mathrm{fb}^{-1}$ recorded by the CMS experiment. Events are selected based on the presence of three leptons, electrons or muons, associated with leptonic Z boson and top quark decays. The measurement yields an inclusive cross section of $87.9\text{ }_{-7.3}^{+7.5}\text{ (stat) }_{-6.0}^{+7.3}\text{ (syst) fb}$ for a dilepton invariant mass greater than 30 GeV, in agreement with standard model (SM) calculations. The ratio between the cross sections for the top quark and the top antiquark production in association with a Z boson is measured as $2.37\text{ }_{-0.42}^{+0.56}\text{ (stat) }_{-0.13}^{+0.27}\text{ (syst)}$. Differential measurements at parton and particle levels are performed for the first time. Several kinematic observables are considered to study the modeling of the process. Results are compared to theoretical predictions with different assumptions on the source of the initial-state b quark and found to be in agreement, within the uncertainties. Additionally, the spin asymmetry, which is sensitive to the top quark polarization, is determined from the differential distribution of the polarization angle at parton level to be $0.58\text{ }^{+0.15}_{-0.16} \text{ (stat) } {\pm 0.06}\text{ (syst)}$, in agreement with SM predictions using the MGvATNLO event generator at next-to-leading order.
DOI: 10.17182/hepdata.105865.v1/t4
title: "table_signalregion_cat2_prefit" of "Inclusive and differential cross section measurements of single top quark production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Simulated signal, total background, and observed data in the signal category with exactly 1 b jet and 4 or more jets for the three data-taking years combined. For the uncertainty on the signal and background, both the total (systematic+statistical) and statistical uncertainties are provided. The uncertainty on the data is the (statistical) Poisson uncertainty. Note that this is the prefit version.
description: Inclusive and differential cross sections of single top quark production in association with a Z boson are measured in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of $138\ \mathrm{fb}^{-1}$ recorded by the CMS experiment. Events are selected based on the presence of three leptons, electrons or muons, associated with leptonic Z boson and top quark decays. The measurement yields an inclusive cross section of $87.9\text{ }_{-7.3}^{+7.5}\text{ (stat) }_{-6.0}^{+7.3}\text{ (syst) fb}$ for a dilepton invariant mass greater than 30 GeV, in agreement with standard model (SM) calculations. The ratio between the cross sections for the top quark and the top antiquark production in association with a Z boson is measured as $2.37\text{ }_{-0.42}^{+0.56}\text{ (stat) }_{-0.13}^{+0.27}\text{ (syst)}$. Differential measurements at parton and particle levels are performed for the first time. Several kinematic observables are considered to study the modeling of the process. Results are compared to theoretical predictions with different assumptions on the source of the initial-state b quark and found to be in agreement, within the uncertainties. Additionally, the spin asymmetry, which is sensitive to the top quark polarization, is determined from the differential distribution of the polarization angle at parton level to be $0.58\text{ }^{+0.15}_{-0.16} \text{ (stat) } {\pm 0.06}\text{ (syst)}$, in agreement with SM predictions using the MGvATNLO event generator at next-to-leading order.
DOI: 10.17182/hepdata.105865.v1/t5
title: "table_signalregion_cat3_prefit" of "Inclusive and differential cross section measurements of single top quark production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Simulated signal, total background, and observed data in the signal category with 2 or more b jets for the three data-taking years combined. For the uncertainty on the signal and background, both the total (systematic+statistical) and statistical uncertainties are provided. The uncertainty on the data is the (statistical) Poisson uncertainty. Note that this is the prefit version.
description: Inclusive and differential cross sections of single top quark production in association with a Z boson are measured in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of $138\ \mathrm{fb}^{-1}$ recorded by the CMS experiment. Events are selected based on the presence of three leptons, electrons or muons, associated with leptonic Z boson and top quark decays. The measurement yields an inclusive cross section of $87.9\text{ }_{-7.3}^{+7.5}\text{ (stat) }_{-6.0}^{+7.3}\text{ (syst) fb}$ for a dilepton invariant mass greater than 30 GeV, in agreement with standard model (SM) calculations. The ratio between the cross sections for the top quark and the top antiquark production in association with a Z boson is measured as $2.37\text{ }_{-0.42}^{+0.56}\text{ (stat) }_{-0.13}^{+0.27}\text{ (syst)}$. Differential measurements at parton and particle levels are performed for the first time. Several kinematic observables are considered to study the modeling of the process. Results are compared to theoretical predictions with different assumptions on the source of the initial-state b quark and found to be in agreement, within the uncertainties. Additionally, the spin asymmetry, which is sensitive to the top quark polarization, is determined from the differential distribution of the polarization angle at parton level to be $0.58\text{ }^{+0.15}_{-0.16} \text{ (stat) } {\pm 0.06}\text{ (syst)}$, in agreement with SM predictions using the MGvATNLO event generator at next-to-leading order.
DOI: 10.17182/hepdata.105865.v1/t6
title: "table_signalregion_cat1_postfit" of "Inclusive and differential cross section measurements of single top quark production in association with a Z boson in proton-proton collisions at $\sqrt{s}$ = 13 TeV"

description: Simulated signal, total background, and observed data in the signal category with exactly 1 b jet and 2-3 jets for the three data-taking years combined. For the uncertainty on the signal and background, both the total (systematic+statistical) and statistical uncertainties are provided. The uncertainty on the data is the (statistical) Poisson uncertainty. Note that this is the postfit version.
description: Inclusive and differential cross sections of single top quark production in association with a Z boson are measured in proton-proton collisions at a center-of-mass energy of 13 TeV with an integrated luminosity of $138\ \mathrm{fb}^{-1}$ recorded by the CMS experiment. Events are selected based on the presence of three leptons, electrons or muons, associated with leptonic Z boson and top quark decays. The measurement yields an inclusive cross section of $87.9\text{ }_{-7.3}^{+7.5}\text{ (stat) }_{-6.0}^{+7.3}\text{ (syst) fb}$ for a dilepton invariant mass greater than 30 GeV, in agreement with standard model (SM) calculations. The ratio between the cross sections for the top quark and the top antiquark production in association with a Z boson is measured as $2.37\text{ }_{-0.42}^{+0.56}\text{ (stat) }_{-0.13}^{+0.27}\text{ (syst)}$. Differential measurements at parton and particle levels are performed for the first time. Several kinematic observables are considered to study the modeling of the process. Results are compared to theoretical predictions with different assumptions on the source of the initial-state b quark and found to be in agreement, within the uncertainties. Additionally, the spin asymmetry, which is sensitive to the top quark polarization, is determined from the differential distribution of the polarization angle at parton level to be $0.58\text{ }^{+0.15}_{-0.16} \text{ (stat) } {\pm 0.06}\text{ (syst)}$, in agreement with SM predictions using the MGvATNLO event generator at next-to-leading order.