S. Tsiskaridze

article

Erratum to: Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb⁻¹ of s $$ \sqrt{s} $$ = 13 TeV pp collision data with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2019 > 2019 > 8 > 1-19

One correction is made to the figure 4e of the paper.

article

A strategy for a general search for new phenomena using data-derived signal regions and its application within the ATLAS experiment

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

The European Physical Journal C > 2019 > 79 > 2 > 1-45

This paper describes a strategy for a general search used by the ATLAS Collaboration to find potential indications of new physics. Events are classified according to their final state into many event classes. For each event class an automated search algorithm tests whether the data are compatible with the Monte Carlo simulated expectation in several distributions sensitive to the effects of new physics...

article

Erratum to: Measurement of the W boson polarisation in $$t\bar{t}$$ tt¯ events from pp collisions at $$\sqrt{s} = 8~\hbox {TeV}$$ s=8TeV in the lepton + jets channel with ATLAS

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

The European Physical Journal C > 2019 > 79 > 1 > 1-14

This change does not have any impact on the measured helicity fractions, but it changes the obtained limits on the anomalous couplings.

article

Search for pair production of Higgs bosons in the b b ¯ b b ¯ $$ b\overline{b}b\overline{b} $$ final state using proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2019 > 2019 > 1 > 1-49

Abstract A search for Higgs boson pair production in the b b ¯ b b ¯ $$ b\overline{b}b\overline{b} $$ final state is carried out with up to 36.1 fb⁻¹ of LHC proton-proton collision data collected at s = 13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector in 2015 and 2016. Three benchmark signals are studied: a spin-2 graviton decaying into a Higgs boson pair, a scalar resonance decaying...

article

Search for electroweak production of supersymmetric particles in final states with two or three leptons at $$\sqrt{s}=13\hbox {TeV}$$ s=13TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

The European Physical Journal C > 2018 > 78 > 12 > 1-36

A search for the electroweak production of charginos, neutralinos and sleptons decaying into final states involving two or three electrons or muons is presented. The analysis is based on 36.1 fb$$^{-1}$$ -1 of $$\sqrt{s}=13$$ s=13 TeV proton–proton collisions recorded by the ATLAS detector at the Large Hadron Collider. Several scenarios based on simplified models are considered. These include the...

article

Performance of missing transverse momentum reconstruction with the ATLAS detector using proton–proton collisions at $$\sqrt{s}=13~\hbox {TeV}$$ s=13TeV

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

The European Physical Journal C > 2018 > 78 > 11 > 1-46

The performance of the missing transverse momentum ($$E_{\mathrm{T}}^{\mathrm{miss}}$$ ETmiss ) reconstruction with the ATLAS detector is evaluated using data collected in proton–proton collisions at the LHC at a centre-of-mass energy of 13 TeV in 2015. To reconstruct $$E_{\mathrm{T}}^{\mathrm{miss}}$$ ETmiss , fully calibrated electrons, muons, photons, hadronically decaying $$\tau \text {-leptons}$$...

article

Erratum to: Search for heavy resonances decaying into a W or Z boson and a Higgs boson in final states with leptons and b-jets in 36 fb⁻¹ of s = 13 $$ \sqrt{s}=13 $$ TeV pp collisions with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2018 > 2018 > 11 > 1-18

One correction is noted for the paper. The exclusion limits for the gluon-gluon fusion production of an A boson reported in the conclusions did not correspond to the exclusion plots shown in figure 6a.

article

Erratum to: Measurement of the W-boson mass in pp collisions at $$\sqrt{s}=7\,\hbox {TeV}$$ s=7TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, J. Abdallah, more

The European Physical Journal C > 2018 > 78 > 11 > 1-14

It has been found that Figure 30 shows the 68% and 99% confidence-level contours for the W boson and top quark mass measurements, instead of the 68% and 95% confidence-level contours, as stated in the legend.

article

Measurements of differential cross sections of top quark pair production in association with jets in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV using the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2018 > 2018 > 10 > 1-58

Abstract Measurements of differential cross sections of top quark pair production in association with jets by the ATLAS experiment at the LHC are presented. The measurements are performed as functions of the top quark transverse momentum, the transverse momentum of the top quark-antitop quark system and the out-of-plane transverse momentum using data from pp collisions at s = 13 $$ \sqrt{s}=13...

article

Measurement of colour flow using jet-pull observables in $$t\bar{t}$$ tt¯ events with the ATLAS experiment at $$\sqrt{s} = 13\,\hbox {TeV}$$ s=13TeV

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

The European Physical Journal C > 2018 > 78 > 10 > 1-31

Previous studies have shown that weighted angular moments derived from jet constituents encode the colour connections between partons that seed the jets. This paper presents measurements of two such distributions, the jet-pull angle and jet-pull magnitude, both of which are derived from the jet-pull angular moment. The measurement is performed in $$t\bar{t}$$ tt¯ events with one leptonically decaying...

article

Angular analysis of B_d⁰ → K^∗μ⁺μ⁻ decays in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2018 > 2018 > 10 > 1-47

Abstract An angular analysis of the decay B_d⁰ → K^∗μ⁺μ⁻ is presented, based on proton-proton collision data recorded by the ATLAS experiment at the LHC. The study is using 20.3 fb⁻¹ of integrated luminosity collected during 2012 at centre-of-mass energy of s = 8 $$ \sqrt{s}=8 $$ TeV. Measurements of the K^* longitudinal polarisation fraction and a set of angular parameters obtained for this...

article

Prompt and non-prompt $$J/\psi $$ J/ψ and $$\psi (2\mathrm {S})$$ ψ(2S) suppression at high transverse momentum in $$5.02~\mathrm {TeV}$$ 5.02TeV Pb+Pb collisions with the ATLAS experiment

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

The European Physical Journal C > 2018 > 78 > 9 > 1-28

A measurement of $$J/\psi $$ J/ψ and $$\psi (2\mathrm {S})$$ ψ(2S) production is presented. It is based on a data sample from Pb+Pb collisions at $$\sqrt{s_{\mathrm {NN}}} = 5.02~\mathrm {TeV}$$ sNN=5.02TeV and pp collisions at $$\sqrt{s} = 5.02~\mathrm {TeV}$$ s=5.02TeV recorded by the ATLAS detector at the LHC in 2015, corresponding to an integrated luminosity of $$0.42~\mathrm {nb}^{-1}$$ 0...

article

Search for supersymmetry in final states with charm jets and missing transverse momentum in 13 TeV pp collisions with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2018 > 2018 > 9 > 1-44

Abstract A search for supersymmetric partners of top quarks decaying as t˜1→cχ˜10 $$ {\tilde{t}}_1\to c{\tilde{\upchi}}_1^0 $$ and supersymmetric partners of charm quarks decaying as c˜1→cχ˜10 $$ {\tilde{c}}_1\to c{\tilde{\upchi}}_1^0 $$, where χ˜10 $$ {\tilde{\upchi}}_1^0 $$ is the lightest neutralino, is presented. The search uses 36.1 fb⁻¹pp collision data at a centre-of-mass energy of 13 TeV...

article

Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the ℓℓbb final state in pp collisions at s=13 TeV with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

Physics Letters B > 2018 > 783 > C > 392-414

A search for a heavy neutral Higgs boson, A, decaying into a Z boson and another heavy Higgs boson, H, is performed using a data sample corresponding to an integrated luminosity of 36.1 fb⁻¹ from proton–proton collisions at s=13 TeV recorded in 2015 and 2016 by the ATLAS detector at the Large Hadron Collider. The search considers the Z boson decaying to electrons or muons and the H boson into a pair...

article

Search for new phenomena using the invariant mass distribution of same-flavour opposite-sign dilepton pairs in events with missing transverse momentum in $$\sqrt{s}=13$$ s=13 $$\text {Te}\text {V}$$ Te pp collisions with the ATLAS detector

M. Aaboud, G. Aad, B. Abbott, O. Abdinov, more

The European Physical Journal C > 2018 > 78 > 8 > 1-38

A search for new phenomena in final states containing an $$e^+e^-$$ e+e- or $$\mu ^+\mu ^-$$ μ+μ- pair, jets, and large missing transverse momentum is presented. This analysis makes use of proton–proton collision data with an integrated luminosity of $$36.1~\mathrm {fb}^{-1}$$ 36.1fb-1 , collected during 2015 and 2016 at a centre-of-mass energy $$\sqrt{s} = 13~\hbox {TeV}$$ s=13TeV with the ATLAS...

article

Search for flavour-changing neutral current top-quark decays t → qZ in proton-proton collisions at s=13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2018 > 2018 > 7 > 1-41

Abstract A search for flavour-changing neutral-current processes in top-quark decays is presented. Data collected with the ATLAS detector from proton-proton collisions at the Large Hadron Collider at a centre-of-mass energy of s=13 $$ \sqrt{s}=13 $$ TeV, corresponding to an integrated luminosity of 36.1 fb⁻¹, are analysed. The search is performed using top-quark pair events, with one top quark decaying...

article

Search for exclusive Higgs and Z boson decays to ϕγ and ργ with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2018 > 2018 > 7 > 1-37

Abstract A search for the exclusive decays of the Higgs and Z bosons to a ϕ or ρ meson and a photon is performed with a pp collision data sample corresponding to an integrated luminosity of up to 35.6 fb⁻¹ collected at s=13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector at the CERN Large Hadron Collider. These decays have been suggested as a probe of the Higgs boson couplings to light quarks. No...

article

Search for pair production of up-type vector-like quarks and for four-top-quark events in final states with multiple b-jets with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2018 > 2018 > 7 > 1-68

Abstract A search for pair production of up-type vector-like quarks (T ) with a significant branching ratio into a top quark and either a Standard Model Higgs boson or a Z boson is presented. The same analysis is also used to search for four-top-quark production in several new physics scenarios. The search is based on a dataset of pp collisions at s=13 $$ \sqrt{s}=13 $$ TeV recorded in 2015 and...

article

Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at s=13 $$ \sqrt{s}=13 $$ TeV

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2018 > 2018 > 6 > 1-51

Abstract A search is conducted for a beyond-the-Standard-Model boson using events where a Higgs boson with mass 125 GeV decays to four leptons (ℓ = e or μ). This decay is presumed to occur via an intermediate state which contains one or two on-shell, promptly decaying bosons: H → ZX/XX → 4ℓ, where X is a new vector boson Z_d or pseudoscalar a with mass between 1 and 60 GeV. The search uses pp collision...

article

Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at s=13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector

The ATLAS collaboration, M. Aaboud, G. Aad, B. Abbott, more

Journal of High Energy Physics > 2018 > 2018 > 6 > 1-58

Abstract A search for supersymmetry involving the pair production of gluinos decaying via third-generation squarks into the lightest neutralino χ˜10 $$ \left({\tilde{\chi}}_1^0\right) $$ is reported. It uses LHC proton-proton collision data at a centre-of-mass energy s=13 $$ \sqrt{s}=13 $$ TeV with an integrated luminosity of 36.1 fb⁻¹ collected with the ATLAS detector in 2015 and 2016. The search...

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Search results for: S. Tsiskaridze

Erratum to: Search for supersymmetry in final states with two same-sign or three leptons and jets using 36 fb⁻¹ of s $$ \sqrt{s} $$ = 13 TeV pp collision data with the ATLAS detector

A strategy for a general search for new phenomena using data-derived signal regions and its application within the ATLAS experiment

Erratum to: Measurement of the W boson polarisation in $$t\bar{t}$$ tt¯ events from pp collisions at $$\sqrt{s} = 8~\hbox {TeV}$$ s=8TeV in the lepton + jets channel with ATLAS

Search for pair production of Higgs bosons in the b b ¯ b b ¯ $$ b\overline{b}b\overline{b} $$ final state using proton-proton collisions at s = 13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector

Search for electroweak production of supersymmetric particles in final states with two or three leptons at $$\sqrt{s}=13\hbox {TeV}$$ s=13TeV with the ATLAS detector

Performance of missing transverse momentum reconstruction with the ATLAS detector using proton–proton collisions at $$\sqrt{s}=13~\hbox {TeV}$$ s=13TeV

Erratum to: Search for heavy resonances decaying into a W or Z boson and a Higgs boson in final states with leptons and b-jets in 36 fb⁻¹ of s = 13 $$ \sqrt{s}=13 $$ TeV pp collisions with the ATLAS detector

Erratum to: Measurement of the W-boson mass in pp collisions at $$\sqrt{s}=7\,\hbox {TeV}$$ s=7TeV with the ATLAS detector

Measurements of differential cross sections of top quark pair production in association with jets in pp collisions at s = 13 $$ \sqrt{s}=13 $$ TeV using the ATLAS detector

Measurement of colour flow using jet-pull observables in $$t\bar{t}$$ tt¯ events with the ATLAS experiment at $$\sqrt{s} = 13\,\hbox {TeV}$$ s=13TeV

Angular analysis of B_d⁰ → K^∗μ⁺μ⁻ decays in pp collisions at s = 8 $$ \sqrt{s}=8 $$ TeV with the ATLAS detector

Prompt and non-prompt $$J/\psi $$ J/ψ and $$\psi (2\mathrm {S})$$ ψ(2S) suppression at high transverse momentum in $$5.02~\mathrm {TeV}$$ 5.02TeV Pb+Pb collisions with the ATLAS experiment

Search for supersymmetry in final states with charm jets and missing transverse momentum in 13 TeV pp collisions with the ATLAS detector

Search for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the ℓℓbb final state in pp collisions at s=13 TeV with the ATLAS detector

Search for new phenomena using the invariant mass distribution of same-flavour opposite-sign dilepton pairs in events with missing transverse momentum in $$\sqrt{s}=13$$ s=13 $$\text {Te}\text {V}$$ Te pp collisions with the ATLAS detector

Search for flavour-changing neutral current top-quark decays t → qZ in proton-proton collisions at s=13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector

Search for exclusive Higgs and Z boson decays to ϕγ and ργ with the ATLAS detector

Search for pair production of up-type vector-like quarks and for four-top-quark events in final states with multiple b-jets with the ATLAS detector

Search for Higgs boson decays to beyond-the-Standard-Model light bosons in four-lepton events with the ATLAS detector at s=13 $$ \sqrt{s}=13 $$ TeV

Search for supersymmetry in final states with missing transverse momentum and multiple b-jets in proton-proton collisions at s=13 $$ \sqrt{s}=13 $$ TeV with the ATLAS detector

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