Showing **25** of **362** results

- Proton-Proton Scattering 169
- Inclusive 146
- Cross Section 79
- Integrated Cross Section 72
- Jet Production 46
- Exclusive 29
- Muon production 26
- Supersymmetry 26
- Transverse Momentum Dependence 26
- Top 21
- SUSY 20
- Single Differential Distribution 20
- Electron production 19
- Z Production 18
- Single Differential Cross Section 14
- Dijet Production 13
- Higgs 11
- Rapidity Dependence 11
- W Production 11

Version 2

A search for high-mass resonances decaying to $\tau\nu$ in $pp$ collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector
The
ATLAS
collaboration
Aaboud, Morad
;
Aad, Georges
;
Abbott, Brad
;
*et al. *

No Journal Information, 2018.

http://inspirehep.net/record/1649273
Inspire Record
1649273
DOI
10.17182/hepdata.80812
http://dx.doi.org/10.17182/hepdata.80812
A search for high-mass resonances decaying to $\tau\nu$ using proton-proton collisions at $\sqrt{s}$ = 13 TeV produced by the Large Hadron Collider is presented. Only $\tau$-lepton decays with hadrons in the final state are considered. The data were recorded with the ATLAS detector and correspond to an integrated luminosity of 36.1 fb$^{-1}$. No statistically significant excess above the Standard Model expectation is observed; model-independent upper limits are set on the visible $\tau\nu$ production cross section. Heavy $W^{\prime}$ bosons with masses less than 3.7 TeV in the Sequential Standard Model and masses less than 2.2-3.8 TeV depending on the coupling in the non-universal G(221) model are excluded at the 95% credibility level.

8
data tables

Regions of the non-universal G(221) parameter space excluded at 95% CL.

The
ATLAS
collaboration
Aaboud, Morad
;
Aad, Georges
;
Abbott, Brad
;
*et al. *

No Journal Information, 2018.

http://inspirehep.net/record/1646686
Inspire Record
1646686
DOI
10.17182/hepdata.81709
http://dx.doi.org/10.17182/hepdata.81709
Measurements are made of differential cross-sections of highly boosted pair-produced top quarks as a function of top-quark and $t\bar{t}$ system kinematic observables using proton--proton collisions at a center-of-mass energy of $\sqrt{s} = 13$ TeV. The data set corresponds to an integrated luminosity of $36.1$ fb$^{-1}$, recorded in 2015 and 2016 with the ATLAS detector at the CERN Large Hadron Collider. Events with two large-radius jets in the final state, one with transverse momentum $p_{\rm T} > 500$ GeV and a second with $p_{\rm T}>350$ GeV, are used for the measurement. The top-quark candidates are separated from the multijet background using jet substructure information and association with a $b$-tagged jet. The measured spectra are corrected for detector effects to a particle-level fiducial phase space and a parton-level limited phase space, and are compared to several Monte Carlo simulations by means of calculated $\chi^2$ values. The cross-section for $t\bar{t}$ production in the fiducial phase-space region is $292 \pm 7 \ \rm{(stat)} \pm 76 \rm{(syst)}$ fb, to be compared to the theoretical prediction of $384 \pm 36$ fb.

173
data tables

inclusive absolute differential cross-section in particle level

$p_{T}^{t,1}$ absolute differential cross-section in particle level

${y}^{t,1}$ absolute differential cross-section in particle level

$p_{T}^{t,2}$ absolute differential cross-section in particle level

${y}^{t,2}$ absolute differential cross-section in particle level

$m^{t\bar{t}}$ absolute differential cross-section in particle level

$p_{T}^{t\bar{t}}$ absolute differential cross-section in particle level

$|y^{t\bar{t}}|$ absolute differential cross-section in particle level

$\chi^{t\bar{t}}$ absolute differential cross-section in particle level

$y_{B}^{t\bar{t}}$ absolute differential cross-section in particle level

$|p_{out}^{t\bar{t}}|$ absolute differential cross-section in particle level

$\Delta \phi(t_{1}, t_{2})$ absolute differential cross-section in particle level

$H_{T}^{t\bar{t}}$ absolute differential cross-section in particle level

$|cos\theta^{*}|$ absolute differential cross-section in particle level

$p_{T}^{t,1}$ relative differential cross-section in particle level

${y}^{t,1}$ relative differential cross-section in particle level

$p_{T}^{t,2}$ relative differential cross-section in particle level

${y}^{t,2}$ relative differential cross-section in particle level

$m^{t\bar{t}}$ relative differential cross-section in particle level

$p_{T}^{t\bar{t}}$ relative differential cross-section in particle level

$|y^{t\bar{t}}|$ relative differential cross-section in particle level

$\chi^{t\bar{t}}$ relative differential cross-section in particle level

$y_{B}^{t\bar{t}}$ relative differential cross-section in particle level

$|p_{out}^{t\bar{t}}|$ relative differential cross-section in particle level

$\Delta \phi(t_{1}, t_{2})$ relative differential cross-section in particle level

$H_{T}^{t\bar{t}}$ relative differential cross-section in particle level

$|cos\theta^{*}|$ relative differential cross-section in particle level

$p_{T}^{t,1}$ covariance matrix for absolute differential cross-section in particle level

$p_{T}^{t,1}$ correlation matrix for absolute differential cross-section in particle level

$p_{T}^{t,1}$ covariance matrix for relative differential cross-section in particle level

$p_{T}^{t,1}$ correlation matrix for relative differential cross-section in particle level

${y}^{t,1}$ covariance matrix for absolute differential cross-section in particle level

${y}^{t,1}$ correlation matrix for absolute differential cross-section in particle level

${y}^{t,1}$ covariance matrix for relative differential cross-section in particle level

${y}^{t,1}$ correlation matrix for relative differential cross-section in particle level

$p_{T}^{t,2}$ covariance matrix for absolute differential cross-section in particle level

$p_{T}^{t,2}$ correlation matrix for absolute differential cross-section in particle level

$p_{T}^{t,2}$ covariance matrix for relative differential cross-section in particle level

$p_{T}^{t,2}$ correlation matrix for relative differential cross-section in particle level

${y}^{t,2}$ covariance matrix for absolute differential cross-section in particle level

${y}^{t,2}$ correlation matrix for absolute differential cross-section in particle level

${y}^{t,2}$ covariance matrix for relative differential cross-section in particle level

${y}^{t,2}$ correlation matrix for relative differential cross-section in particle level

$m^{t\bar{t}}$ covariance matrix for absolute differential cross-section in particle level

$m^{t\bar{t}}$ correlation matrix for absolute differential cross-section in particle level

$m^{t\bar{t}}$ covariance matrix for relative differential cross-section in particle level

$m^{t\bar{t}}$ correlation matrix for relative differential cross-section in particle level

$p_{T}^{t\bar{t}}$ covariance matrix for absolute differential cross-section in particle level

$p_{T}^{t\bar{t}}$ correlation matrix for absolute differential cross-section in particle level

$p_{T}^{t\bar{t}}$ covariance matrix for relative differential cross-section in particle level

$p_{T}^{t\bar{t}}$ correlation matrix for relative differential cross-section in particle level

$|y^{t\bar{t}}|$ covariance matrix for absolute differential cross-section in particle level

$|y^{t\bar{t}}|$ correlation matrix for absolute differential cross-section in particle level

$|y^{t\bar{t}}|$ covariance matrix for relative differential cross-section in particle level

$|y^{t\bar{t}}|$ correlation matrix for relative differential cross-section in particle level

$\chi^{t\bar{t}}$ covariance matrix for absolute differential cross-section in particle level

$\chi^{t\bar{t}}$ correlation matrix for absolute differential cross-section in particle level

$\chi^{t\bar{t}}$ covariance matrix for relative differential cross-section in particle level

$\chi^{t\bar{t}}$ correlation matrix for relative differential cross-section in particle level

$y_{B}^{t\bar{t}}$ covariance matrix for absolute differential cross-section in particle level

$y_{B}^{t\bar{t}}$ correlation matrix for absolute differential cross-section in particle level

$y_{B}^{t\bar{t}}$ covariance matrix for relative differential cross-section in particle level

$y_{B}^{t\bar{t}}$ correlation matrix for relative differential cross-section in particle level

$|p_{out}^{t\bar{t}}|$ covariance matrix for absolute differential cross-section in particle level

$|p_{out}^{t\bar{t}}|$ correlation matrix for absolute differential cross-section in particle level

$|p_{out}^{t\bar{t}}|$ covariance matrix for relative differential cross-section in particle level

$|p_{out}^{t\bar{t}}|$ correlation matrix for relative differential cross-section in particle level

$H_{T}^{t\bar{t}}$ covariance matrix for absolute differential cross-section in particle level

$H_{T}^{t\bar{t}}$ correlation matrix for absolute differential cross-section in particle level

$H_{T}^{t\bar{t}}$ covariance matrix for relative differential cross-section in particle level

$H_{T}^{t\bar{t}}$ correlation matrix for relative differential cross-section in particle level

$|cos\theta^{*}|$ covariance matrix for absolute differential cross-section in particle level

$|cos\theta^{*}|$ correlation matrix for absolute differential cross-section in particle level

$|cos\theta^{*}|$ covariance matrix for relative differential cross-section in particle level

$|cos\theta^{*}|$ correlation matrix for relative differential cross-section in particle level

all 13 variables correlation matrix for absolute differential cross-section in particle level

all 13 variables correlation matrix for relative differential cross-section in particle level

${p_{{T}}}^{t}$ absolute differential cross-section in parton level

$|y^{t}|$ absolute differential cross-section in parton level

${p_{{T}}}^{t,1}$ absolute differential cross-section in parton level

$|y^{t,1}|$ absolute differential cross-section in parton level

${p_{{T}}}^{t,2}$ absolute differential cross-section in parton level

$|{y}^{t,2}|$ absolute differential cross-section in parton level

$m^{t\bar{t}}$ absolute differential cross-section in parton level

${p_{{T}}}^{t\bar{t}}$ absolute differential cross-section in parton level

${y}^{t\bar{t}}$ absolute differential cross-section in parton level

${\chi}^{t\bar{t}}$ absolute differential cross-section in parton level

${y_{B}}^{t\bar{t}}$ absolute differential cross-section in parton level

$|{p_{out}}^{t\bar{t}}|$ absolute differential cross-section in parton level

${\Delta\Phi}^{t\bar{t}}$ absolute differential cross-section in parton level

${H_{T}}^{t\bar{t}}$ absolute differential cross-section in parton level

${cos{\theta}^{\star}}$ absolute differential cross-section in parton level

${p_{{T}}}^{t}$ relative differential cross-section in parton level

$|y^{t}|$ relative differential cross-section in parton level

${p_{{T}}}^{t,1}$ relative differential cross-section in parton level

$|y^{t,1}|$ relative differential cross-section in parton level

${p_{{T}}}^{t,2}$ relative differential cross-section in parton level

$|{y}^{t,2}|$ relative differential cross-section in parton level

$m^{t\bar{t}}$ relative differential cross-section in parton level

${p_{{T}}}^{t\bar{t}}$ relative differential cross-section in parton level

${y}^{t\bar{t}}$ relative differential cross-section in parton level

${\chi}^{t\bar{t}}$ relative differential cross-section in parton level

${y_{B}}^{t\bar{t}}$ relative differential cross-section in parton level

$|{p_{out}}^{t\bar{t}}|$ relative differential cross-section in parton level

${\Delta\Phi}^{t\bar{t}}$ relative differential cross-section in parton level

${H_{T}}^{t\bar{t}}$ relative differential cross-section in parton level

${cos{\theta}^{\star}}$ relative differential cross-section in parton level

${p_{{T}}}^{t}$ covariance matrix for absolute differential cross-section in parton level

${p_{{T}}}^{t}$ correlation matrix for absolute differential cross-section in parton level

${p_{{T}}}^{t}$ covariance matrix for relative differential cross-section in parton level

${p_{{T}}}^{t}$ correlation matrix for relative differential cross-section in parton level

$|y^{t}|$ covariance matrix for absolute differential cross-section in parton level

$|y^{t}|$ correlation matrix for absolute differential cross-section in parton level

$|y^{t}|$ covariance matrix for relative differential cross-section in parton level

$|y^{t}|$ correlation matrix for relative differential cross-section in parton level

${p_{{T}}}^{t,1}$ covariance matrix for absolute differential cross-section in parton level

${p_{{T}}}^{t,1}$ correlation matrix for absolute differential cross-section in parton level

${p_{{T}}}^{t,1}$ covariance matrix for relative differential cross-section in parton level

${p_{{T}}}^{t,1}$ correlation matrix for relative differential cross-section in parton level

$|y^{t,1}|$ covariance matrix for absolute differential cross-section in parton level

$|y^{t,1}|$ correlation matrix for absolute differential cross-section in parton level

$|y^{t,1}|$ covariance matrix for relative differential cross-section in parton level

$|y^{t,1}|$ correlation matrix for relative differential cross-section in parton level

${p_{{T}}}^{t,2}$ covariance matrix for absolute differential cross-section in parton level

${p_{{T}}}^{t,2}$ correlation matrix for absolute differential cross-section in parton level

${p_{{T}}}^{t,2}$ covariance matrix for relative differential cross-section in parton level

${p_{{T}}}^{t,2}$ correlation matrix for relative differential cross-section in parton level

$|{y}^{t,2}|$ covariance matrix for absolute differential cross-section in parton level

$|{y}^{t,2}|$ correlation matrix for absolute differential cross-section in parton level

$|{y}^{t,2}|$ covariance matrix for relative differential cross-section in parton level

$|{y}^{t,2}|$ correlation matrix for relative differential cross-section in parton level

$m^{t\bar{t}}$ covariance matrix for absolute differential cross-section in parton level

$m^{t\bar{t}}$ correlation matrix for absolute differential cross-section in parton level

$m^{t\bar{t}}$ covariance matrix for relative differential cross-section in parton level

$m^{t\bar{t}}$ correlation matrix for relative differential cross-section in parton level

${p_{{T}}}^{t\bar{t}}$ covariance matrix for absolute differential cross-section in parton level

${p_{{T}}}^{t\bar{t}}$ correlation matrix for absolute differential cross-section in parton level

${p_{{T}}}^{t\bar{t}}$ covariance matrix for relative differential cross-section in parton level

${p_{\{T}}}^{t\bar{t}}$ correlation matrix for relative differential cross-section in parton level

${y}^{t\bar{t}}$ covariance matrix for absolute differential cross-section in parton level

${y}^{t\bar{t}}$ correlation matrix for absolute differential cross-section in parton level

${y}^{t\bar{t}}$ covariance matrix for relative differential cross-section in parton level

${y}^{t\bar{t}}$ correlation matrix for relative differential cross-section in parton level

${\chi}^{t\bar{t}}$ covariance matrix for absolute differential cross-section in parton level

${\chi}^{t\bar{t}}$ correlation matrix for absolute differential cross-section in parton level

${\chi}^{t\bar{t}}$ covariance matrix for relative differential cross-section in parton level

${\chi}^{t\bar{t}}$ correlation matrix for relative differential cross-section in parton level

${y_{B}}^{t\bar{t}}$ covariance matrix for absolute differential cross-section in parton level

${y_{B}}^{t\bar{t}}$ correlation matrix for absolute differential cross-section in parton level

${y_{B}}^{t\bar{t}}$ covariance matrix for relative differential cross-section in parton level

${y_{B}}^{t\bar{t}}$ correlation matrix for relative differential cross-section in parton level

$|{p_{out}}^{t\bar{t}}|$ covariance matrix for absolute differential cross-section in parton level

$|{p_{out}}^{t\bar{t}}|$ correlation matrix for absolute differential cross-section in parton level

$|{p_{out}}^{t\bar{t}}|$ covariance matrix for relative differential cross-section in parton level

$|{p_{out}}^{t\bar{t}}|$ correlation matrix for relative differential cross-section in parton level

${\Delta\Phi}^{t\bar{t}}$ covariance matrix for absolute differential cross-section in parton level

${\Delta\Phi}^{t\bar{t}}$ correlation matrix for absolute differential cross-section in parton level

${\Delta\Phi}^{t\bar{t}}$ covariance matrix for relative differential cross-section in parton level

${\Delta\Phi}^{t\bar{t}}$ correlation matrix for relative differential cross-section in parton level

${H_{T}}^{t\bar{t}}$ covariance matrix for absolute differential cross-section in parton level

${H_{T}}^{t\bar{t}}$ correlation matrix for absolute differential cross-section in parton level

${H_{T}}^{t\bar{t}}$ covariance matrix for relative differential cross-section in parton level

${H_{T}}^{t\bar{t}}$ correlation matrix for relative differential cross-section in parton level

${cos{\theta}^{\star}}$ covariance matrix for absolute differential cross-section in parton level

${cos{\theta}^{\star}}$ correlation matrix for absolute differential cross-section in parton level

${cos{\theta}^{\star}}$ covariance matrix for relative differential cross-section in parton level

${cos{\theta}^{\star}}$ correlation matrix for relative differential cross-section in parton level

all 15 variables correlation matrix for absolute differential cross-section in parton level

all 15 variables correlation matrix for relative differential cross-section in parton level

The
ATLAS
collaboration
Aaboud, Morad
;
Aad, Georges
;
Abbott, Brad
;
*et al. *

No Journal Information, 2017.

http://inspirehep.net/record/1644618
Inspire Record
1644618
DOI
10.17182/hepdata.80609
http://dx.doi.org/10.17182/hepdata.80609
A search for electroweak production of supersymmetric particles in scenarios with compressed mass spectra in final states with two low-momentum leptons and missing transverse momentum is presented. This search uses proton-proton collision data recorded by the ATLAS detector at the Large Hadron Collider in 2015-2016, corresponding to 36.1 fb$^{-1}$ of integrated luminosity at $\sqrt{s}=13$ TeV. Events with same-flavor pairs of electrons or muons with opposite electric charge are selected. The data are found to be consistent with the Standard Model prediction. Results are interpreted using simplified models of R-parity-conserving supersymmetry in which there is a small mass difference between the masses of the produced supersymmetric particles and the lightest neutralino. Exclusion limits at 95% confidence level are set on next-to-lightest neutralino masses of up to 130 GeV for Higgsino production and 170 GeV for wino production, and sleptons masses of up to 180 GeV for pair production of sleptons. In the compressed mass regime, the exclusion limits extend down to mass splittings of 3 GeV for Higgsino production, 2.5 GeV for wino production, and 1 GeV for slepton production. The results are also interpreted in the context of a radiatively-driven natural supersymmetry model with non-universal Higgs boson masses.

0
data tables

The
ATLAS
collaboration
Aaboud, Morad
;
Aad, Georges
;
Abbott, Brad
;
*et al. *

No Journal Information, 2017.

http://inspirehep.net/record/1643843
Inspire Record
1643843
DOI
10.17182/hepdata.79797
http://dx.doi.org/10.17182/hepdata.79797
A search is conducted for new resonances decaying into a $W$ or $Z$ boson and a 125 GeV Higgs boson in the $\nu\bar{\nu}b\bar{b}$, $\ell^{\pm}{\nu}b\bar{b}$, and $\ell^+\ell^-b\bar{b}$ final states, where $\ell ^{\pm}= e^{\pm}$ or $\mu^{\pm}$, in $pp$ collisions at $\sqrt s = 13$ TeV. The data used correspond to a total integrated luminosity of 36.1 fb$^{-1}$ collected with the ATLAS detector at the Large Hadron Collider during the 2015 and 2016 data-taking periods. The search is conducted by examining the reconstructed invariant or transverse mass distributions of $Wh$ and $Zh$ candidates for evidence of a localised excess in the mass range of 220 GeV up to 5 TeV. No significant excess is observed and the results are interpreted in terms of constraints on the production cross-section times branching fraction of heavy $W^\prime$ and $Z^\prime$ resonances in heavy-vector-triplet models and the CP-odd scalar boson $A$ in two-Higgs-doublet models. Upper limits are placed at the 95 % confidence level and range between $9.0\times 10^{-4}$ pb and $7.3\times 10^{-1}$ pb depending on the model and mass of the resonance.

0
data tables

The
ATLAS
collaboration
Aaboud, Morad
;
Aad, Georges
;
Abbott, Brad
;
*et al. *

No Journal Information, 2017.

http://inspirehep.net/record/1641262
Inspire Record
1641262
DOI
10.17182/hepdata.78375
http://dx.doi.org/10.17182/hepdata.78375
This paper presents a search for direct electroweak gaugino or gluino pair production with a chargino nearly mass-degenerate with a stable neutralino. It is based on an integrated luminosity of 36.1 $\mathrm{fb}^{-1}$ of $pp$ collisions at $\sqrt{s}$ = 13 TeV collected by the ATLAS experiment at the LHC. The final state of interest is a disappearing track accompanied by at least one jet with high transverse momentum from initial-state radiation or by four jets from the gluino decay chain. The use of short track segments reconstructed from the innermost tracking layers significantly improves the sensitivity to short chargino lifetimes. The results are found to be consistent with Standard Model predictions. Exclusion limits are set at 95% confidence level on the mass of charginos and gluinos for different chargino lifetimes. For a pure wino with a lifetime of about 0.2 ns, chargino masses up to 460 GeV are excluded. For the strong production channel, gluino masses up to 1.65 TeV are excluded assuming a chargino mass of 460 GeV and lifetime of 0.2 ns.

0
data tables

The
ATLAS
collaboration
Aaboud, Morad
;
Aad, Georges
;
Abbott, Brad
;
*et al. *

No Journal Information, 2017.

http://inspirehep.net/record/1641270
Inspire Record
1641270
DOI
10.17182/hepdata.77891
http://dx.doi.org/10.17182/hepdata.77891
A search for the supersymmetric partners of quarks and gluons (squarks and gluinos) in final states containing hadronic jets and missing transverse momentum, but no electrons or muons, is presented. The data used in this search were recorded in 2015 and 2016 by the ATLAS experiment in $\sqrt{s}$=13 TeV proton-proton collisions at the Large Hadron Collider, corresponding to an integrated luminosity of 36.1 fb$^{-1}$. The results are interpreted in the context of various models where squarks and gluinos are pair-produced and the neutralino is the lightest supersymmetric particle. An exclusion limit at the 95\% confidence level on the mass of the gluino is set at 2.03 TeV for a simplified model incorporating only a gluino and the lightest neutralino, assuming the lightest neutralino is massless. For a simplified model involving the strong production of mass-degenerate first- and second-generation squarks, squark masses below 1.55 TeV are excluded if the lightest neutralino is massless. These limits substantially extend the region of supersymmetric parameter space previously excluded by searches with the ATLAS detector.

425
data tables

Version 4

Search for top-squark pair production in final states with one lepton, jets, and missing transverse momentum using 36 fb$^{-1}$ of $\sqrt{s}=13$ TeV pp collision data with the ATLAS detector
The
ATLAS
collaboration
Aaboud, Morad
;
Aad, Georges
;
Abbott, Brad
;
*et al. *

No Journal Information, 2017.

http://inspirehep.net/record/1639856
Inspire Record
1639856
DOI
10.17182/hepdata.79304
http://dx.doi.org/10.17182/hepdata.79304
The results of a search for the direct pair production of top squarks, the supersymmetric partner of the top quark, in final states with one isolated electron or muon, several energetic jets, and missing transverse momentum are reported. The analysis also targets spin-0 mediator models, where the mediator decays into a pair of dark-matter particles and is produced in association with a pair of top quarks. The search uses data from proton-proton collisions delivered by the Large Hadron Collider in 2015 and 2016 at a centre-of-mass energy of $\sqrt{s}=13$ TeV and recorded by the ATLAS detector, corresponding to an integrated luminosity of 36 fb$^{-1}$. A wide range of signal scenarios with different mass-splittings between the top squark, the lightest neutralino and possible intermediate supersymmetric particles are considered, including cases where the W bosons or the top quarks produced in the decay chain are off-shell. No significant excess over the Standard Model prediction is observed. The null results are used to set exclusion limits at 95% confidence level in several supersymmetry benchmark models. For pair-produced top-squarks decaying into top quarks, top-squark masses up to 940 GeV are excluded. Stringent exclusion limits are also derived for all other considered top-squark decay scenarios. For the spin-0 mediator models, upper limits are set on the visible cross-section.

100
data tables