75 Result(s)
within
T. Rashid
Astronomy, Astrophysics and Cosmology
Quantum Field Theories, String Theory
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Article
Open AccessTwo-particle Bose–Einstein correlations in \({ pp }\) collisions at \(\mathbf {\sqrt{s} = 13}\) TeV measured with the ATLAS detector at the LHC
This paper presents studies of Bose–Einstein correlations (BEC) in proton–proton collisions at a centre-of-mass energy of 13 TeV, using data from the ATLAS detector at the CERN Large Hadron Collider. Data were...
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Open AccessMeasurement of single top-quark production in association with a W boson in the single-lepton channel at \(\sqrt{s} = 8\,\text {TeV}\) with the ATLAS detector
The production cross-section of a top quark in association with a W boson is measured using proton–proton collisions at $$\sqrt{s} = 8\,\text ...
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Open AccessMeasurement of the CP-violating phase \(\phi _s\) in \( B_{s}^{0} \rightarrow J/\psi \phi \) decays in ATLAS at 13 TeV
A measurement of the \( B_{s}^{0} \rightarrow J/\psi \phi \) B ...
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Article
Open AccessDetermination of jet calibration and energy resolution in proton–proton collisions at \(\sqrt{s} = 8~\hbox {TeV}\) using the ATLAS detector
The jet energy scale, jet energy resolution, and their systematic uncertainties are measured for jets reconstructed with the ATLAS detector in 2012 using proton–proton data produced at a centre-of-mass energy ...
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Open AccessErratum to: Measurements of top-quark pair differential and double-differential cross-sections in the \(\ell \) +jets channel with pp collisions at \(\sqrt{s}=13\) TeV using the ATLAS detector [Eur. Phys. J. C 79 (2019) 1028]
Corrections for five figures and six tables are noted for the paper, which do not affect the conclusions reported.
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Open AccessMeasurements of top-quark pair spin correlations in the \(e\mu \) channel at \(\sqrt{s} = 13\) TeV using pp collisions in the ATLAS detector
A measurement of observables sensitive to spin correlations in \(t\bar{t}\)tt¯ production is presented, using 36.1 \(\hbox {fb}^{-1}\)fb-1 of pp collision data at \(\sqrt{s} = 13\)s=13 TeV recorded with the ATLAS...
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Open AccessSearch for a scalar partner of the top quark in the all-hadronic \(t{\bar{t}}\) plus missing transverse momentum final state at \(\sqrt{s}=13\) TeV with the ATLAS detector
A search for direct pair production of scalar partners of the top quark (top squarks or scalar third-generation up-type leptoquarks) in the all-hadronic \(t{\bar{t}}\)tt¯ plus missing transverse momentum final st...
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Open AccessSearch for direct production of electroweakinos in final states with one lepton, missing transverse momentum and a Higgs boson decaying into two b-jets in \(pp\) collisions at \(\sqrt{s}=13\) TeV with the ATLAS detector
The results of a search for electroweakino pair production \(pp \rightarrow \tilde{\chi }^\pm _1 \tilde{\chi }^0_2\)pp→χ~1±χ~20 in which the chargino (\(\tilde{\chi }^\pm _1\)χ~1±) decays into a W boson and the l...
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Open AccessMeasurement of the transverse momentum distribution of Drell–Yan lepton pairs in proton–proton collisions at \(\sqrt{s}=13\,\)TeV with the ATLAS detector
This paper describes precision measurements of the transverse momentum \(p_\mathrm {T}^{\ell \ell }\)pTℓℓ (\(\ell =e,\mu \)ℓ=e,μ) and of the angular variable \(\phi ^{*}_{\eta }\)ϕη∗ distributions of Drell–Yan le...
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Article
Open AccessMeasurement of the \(t\bar{t}\) production cross-section and lepton differential distributions in \(e\mu \) dilepton events from pp collisions at \(\sqrt{s}=13\,\text {TeV}\) with the ATLAS detector
The inclusive top quark pair ( \(t\bar{t}\) t ...
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Article
Open AccessSearch for light long-lived neutral particles produced in pp collisions at \(\sqrt{s} = 13~\mathrm {TeV}\) and decaying into collimated leptons or light hadrons with the ATLAS detector
Several models of physics beyond the Standard Model predict the existence of dark photons, light neutral particles decaying into collimated leptons or light hadrons. This paper presents a search for long-lived...
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Open AccessSearch for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in \(\sqrt{s}=13\) \(\text {TeV}\) pp collisions using the ATLAS detector
A search for the electroweak production of charginos and sleptons decaying into final states with two electrons or muons is presented. The analysis is based on 139 fb\(^{-1}\)-1 of proton–proton collisions record...
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Article
Open AccessTransverse momentum and process dependent azimuthal anisotropies in \(\sqrt{s_{\mathrm {NN}}}=8.16\) TeV p+Pb collisions with the ATLAS detector
The azimuthal anisotropy of charged particles produced in \(\sqrt{s_{\mathrm {NN}}}=8.16\)sNN=8.16 TeV p+Pb collisions is measured with the ATLAS detector at the LHC. The data correspond to an integrated luminosi...
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Open AccessMeasurement of long-range two-particle azimuthal correlations in Z-boson tagged pp collisions at \(\sqrt{s}=8\) and 13 TeV
Results are presented from the measurement by ATLAS of long-range (\(|\Delta \eta |>2\)|Δη|>2) dihadron angular correlations in \(\sqrt{s}=8\)s=8 and 13 TeV pp collisions containing a Z boson. The analysis is per...
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Open AccessPerformance of electron and photon triggers in ATLAS during LHC Run 2
Electron and photon triggers covering transverse energies from 5 \(\text {GeV }\)GeV to several \(\text {TeV }\)TeV are essential for the ATLAS experiment to record signals for a wide variety of physics: from Sta...
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Open AccessMeasurements of top-quark pair differential and double-differential cross-sections in the \(\ell \) +jets channel with pp collisions at \(\sqrt{s}=13\) TeV using the ATLAS detector
Single- and double-differential cross-section measurements are presented for the production of top-quark pairs, in the lepton + jets channel at particle and parton level. Two topologies, resolved and boosted, ...
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Article
Open AccessMeasurement of \(K_S^0\) and \(\Lambda ^0\) production in \(t \bar{t}\) dileptonic events in pp collisions at \(\sqrt{s} =\) 7 TeV with the ATLAS detector
Measurements of \(K_S^0\)KS0 and \(\Lambda ^0\)Λ0 production in \(t\bar{t}\)tt¯ final states have been performed. They are based on a data sample with integrated luminosity of 4.6 \(\mathrm {fb}^{-1}\)fb-1 from p...
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Open AccessMeasurement of flow harmonics correlations with mean transverse momentum in lead–lead and proton–lead collisions at \(\sqrt{s_{\mathrm{NN}}} = 5.02~\hbox {TeV}\) with the ATLAS detector
To assess the properties of the quark–gluon plasma formed in ultrarelativistic ion collisions, the ATLAS experiment at the LHC measures a correlation between the mean transverse momentum and the flow harmonics...
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Open AccessATLAS b-jet identification performance and efficiency measurement with \(t{\bar{t}}\) events in pp collisions at \(\sqrt{s}=13\) TeV
The algorithms used by the ATLAS Collaboration during Run 2 of the Large Hadron Collider to identify jets containing b-hadrons are presented. The performance of the algorithms is evaluated in the simulation and t...
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Open AccessMeasurement of \(W^\pm \) boson production in Pb+Pb collisions at \(\sqrt{s_{\mathrm{NN}}} = 5.02~\text {Te}\text {V}\) with the ATLAS detector
A measurement of \(W^\pm \)W± boson production in Pb+Pb collisions at \(\sqrt{s_\mathrm {NN}} = 5.02~\text {Te}\text {V}\)sNN=5.02Te is reported using data recorded by the ATLAS experiment at the LHC in 2015, cor...
