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Article
Open AccessSearch for same-sign top-quark production and fourth-generation down-type quarks in pp collisions at \( \sqrt {s} = {7}\;{\text{TeV}} \) with the ATLAS detector
A search is presented for same-sign top-quark production and down-type heavy quarks of charge −1/3 in events with two isolated leptons (e or μ) that have the same electric charge, at least two jets and large miss...
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Article
Open AccessJet mass and substructure of inclusive jets in \( \sqrt {s} = 7\;{\text{TeV}} \) pp collisions with the ATLAS experiment
Recent studies have highlighted the potential of jet substructure techniques to identify the hadronic decays of boosted heavy particles. These studies all rely upon the assumption that the internal substructur...
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Article
Open AccessSearch for charged Higgs bosons decaying via H ± → τν in \( t\overline t \) events using pp collision data at \( \sqrt {s} = 7\;TeV \) with the ATLAS detector
The results of a search for charged Higgs bosons are presented. The analysis is based on 4.6fb−1 of proton-proton collision data at $ \sqrt {s...
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Article
Open AccessMeasurement of the W boson polarization in top quark decays with the ATLAS detector
This paper presents measurements of the polarization of W bosons in top quark decays, derived from \( t\overline t \) events with...
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Article
Open AccessMeasurement of \(t\bar{t}\) production with a veto on additional central jet activity in pp collisions at \(\sqrt{s}=7\) TeV using the ATLAS detector
A measurement of the jet activity in \(t\bar{t}\) events produced in proton–proton collisions at a centre-of-mass energy of 7 TeV...
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Article
Open AccessMeasurement of τ polarization in W→τν decays with the ATLAS detector in pp collisions at \(\sqrt{s} =7~\mathrm{TeV}\)
In this paper, a measurement of τ polarization in W→τν decays is presented. It is measured from the energies of the decay products in hadronic τ decays with a single final state charged particle. The data, corres...
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Article
Open AccessA search for \(t\bar{t}\) resonances with the ATLAS detector in 2.05 fb−1 of proton-proton collisions at \(\sqrt{s} = 7~\mathrm{TeV}\)
A search for top quark pair resonances in final states containing at least one electron or muon has been performed with the ATLAS experiment at the CERN Large Hadron Collider. The search uses a data sample cor...
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Article
Open AccessHunt for new phenomena using large jet multiplicities and missing transverse momentum with ATLAS in 4.7 fb−1 of \( \sqrt {s} = 7\;TeV \) proton-proton collisions
Results are presented of a search for new particles decaying to large numbers of jets in association with missing transverse momentum, using 4.7 fb−1 of pp collision data at
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Article
Open AccessSearch for second generation scalar leptoquarks in pp collisions at \(\sqrt{s}=7~\mbox{TeV}\) with the ATLAS detector
The results of a search for the production of second generation scalar leptoquarks are presented for final states consisting of either two muons and at least two jets or a muon plus missing transverse momentum...
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Article
Open AccessA search for \( t\overline t \) resonances in lepton+jets events with highly boosted top quarks collected in pp collisions at \( \sqrt {s} = 7 \) TeV with the ATLAS detector
A search for resonant production of high-mass top-quark pairs is performed on 2.05 fb−1 of proton-proton collisions at \( \sqrt {s} = 7 \) ...
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Article
Open AccessSearch for the Standard Model Higgs boson in the H → τ + τ − decay mode in \( \sqrt {s} = 7\,{\mathrm{TeV}} \) pp collisions with ATLAS
A search for the Standard Model Higgs boson decaying into a pair of τ leptons is reported. The analysis is based on a data sample of proton-proton collisions collected by the ATLAS experiment at the LHC and corre...
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Article
Open AccessSearch for a fermiophobic Higgs boson in the diphoton decay channel with the ATLAS detector
A search for a fermiophobic Higgs boson using diphoton events produced in proton-proton collisions at a centre-of-mass energy of $\sqrt{s}=7~\...
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Article
Open AccessA search for flavour changing neutral currents in top-quark decays in pp collision data collected with the ATLAS detector at \( \sqrt{s}=7\;TeV \)
A search for flavour changing neutral current (FCNC) processes in top-quark decays by the ATLAS Collaboration is presented. Data collected from pp collisions at the LHC at a centre-of-mass energy of ...
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Article
Open AccessMeasurement of W ± Z production in proton-proton collisions at \(\sqrt{s}=7~\mbox{TeV}\) with the ATLAS detector
A study of W ± Z production in proton-proton collisions at \(\sqrt{s} = 7~\mbox{TeV}\) is present...
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Article
Open AccessSearch for top and bottom squarks from gluino pair production in final states with missing transverse energy and at least three b-jets with the ATLAS detector
This letter reports the results of a search for top and bottom squarks from gluino pair production in 4.7 fb−1 of pp collisions at $\sqrt{s}=7...
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Article
Open AccessMeasurements of the pseudorapidity dependence of the total transverse energy in proton-proton collisions at \( \sqrt{s}=7 \) TeV with ATLAS
This paper describes measurements of the sum of the transverse energy of particles as a function of particle pseudorapidity, η, in proton-proton collisions at a centre-of-mass energy,
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Article
Open AccessSearch for a heavy top-quark partner in final states with two leptons with the ATLAS detector at the LHC
The results of a search for direct pair production of heavy top-quark partners in 4.7 fb−1 of integrated luminosity from pp collisions at $ \s...
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Article
Open AccessMeasurement of event shapes at large momentum transfer with the ATLAS detector in pp collisions at \(\sqrt{\mathbf{s}}=7\ \mathrm{TeV}\)
A measurement of event shape variables is presented for large momentum transfer proton-proton collisions using the ATLAS detector at the Large Hadron Collider. Six event shape variables calculated using hadron...
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Article
Open AccessSearch for supersymmetry in events with large missing transverse momentum, jets, and at least one tau lepton in 7 TeV proton-proton collision data with the ATLAS detector
A search for supersymmetry (SUSY) in events with large missing transverse momentum, jets, and at least one hadronically decaying τ lepton, with zero or one additional light lepton (e/μ), has been performed using ...
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Article
Open AccessSearch for high-mass resonances decaying to dilepton final states in pp collisions at \( \sqrt{s}=7 \) TeV with the ATLAS detector
The ATLAS detector at the Large Hadron Collider is used to search for high-mass resonances decaying to an electron-positron pair or a muon-antimuon pair. The search is sensitive to heavy neutral Z′ gauge bosons, ...
