328 Result(s)
within
Quantum Field Theories, String Theory
**ng-li Gan
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Open AccessPerformance of the ATLAS detector using first collision data
More than half a million minimum-bias events of LHC collision data were collected by the ATLAS experiment in December 2009 at centre-of-mass energies of 0.9 TeV and 2.36 TeV. This paper reports on studies of t...
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Open AccessThe ATLAS Simulation Infrastructure
The simulation software for the ATLAS Experiment at the Large Hadron Collider is being used for large-scale production of events on the LHC Computing Grid. This simulation requires many components, from the ge...
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Open AccessThe ATLAS Inner Detector commissioning and calibration
The ATLAS Inner Detector is a composite tracking system consisting of silicon pixels, silicon strips and straw tubes in a 2 T magnetic field. Its installation was completed in August 2008 and the detector took...
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Open AccessMeasurement of the W → ℓν and Z/γ * → ℓℓ production cross sections in proton-proton collisions at \( \sqrt {s} = 7\;{\text{TeV}} \) with the ATLAS detector
First measurements of the W → ℓν and Z/γ * → ℓℓ (ℓ = e, μ) production cross sections in proton-proton collisions at
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Open AccessMeasurement of inclusive jet and dijet cross sections in proton-proton collisions at 7 TeV centre-of-mass energy with the ATLAS detector
Jet cross sections have been measured for the first time in proton-proton collisions at a centre-of-mass energy of 7 TeV using the ATLAS detector. The measurement uses an integrated luminosity of 17 nb−1 recorded...
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Open AccessStudies of the performance of the ATLAS detector using cosmic-ray muons
Muons from cosmic-ray interactions in the atmosphere provide a high-statistics source of particles that can be used to study the performance and calibration of the ATLAS detector. Cosmic-ray muons can penetrat...
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Open AccessMeasurement of dijet production with a veto on additional central jet activity in pp collisions at \( \sqrt {s} = 7 \) TeV using the ATLAS detector
A measurement of jet activity in the rapidity interval bounded by a dijet system is presented. Events are vetoed if a jet with transverse momentum greater than 20 GeV is found between the two boundary jets. Th...
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Open AccessMeasurement of Wγ and Zγ production in proton-proton collisions at \( \sqrt {s} = 7 \) TeV with the ATLAS detector
We present studies of W and Z bosons with associated high energy photons produced in pp collisions at \( \sqrt {s} = 7 \) ...
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Open AccessMeasurement of the inclusive and dijet cross-sections of b-jets in pp collisions at \(\sqrt{s}=7\mbox{~TeV}\) with the ATLAS detector
The inclusive and dijet production cross-sections have been measured for jets containing b-hadrons (b-jets) in proton–proton collisions at a centre-of-mass energy of
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Open AccessElectron performance measurements with the ATLAS detector using the 2010 LHC proton-proton collision data
Detailed measurements of the electron performance of the ATLAS detector at the LHC are reported, using decays of the Z, W and J/ψ particles. Data collected in 2010 at
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Open AccessSearch for anomaly-mediated supersymmetry breaking with the ATLAS detector based on a disappearing-track signature in pp collisions at \(\sqrt{s} = 7~\mathrm{TeV}\)
In models of anomaly-mediated supersymmetry breaking (AMSB), the lightest chargino is predicted to have a lifetime long enough to be detected in collider experiments. This letter explores AMSB scenarios in pp col...
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Open AccessMeasurement of the polarisation of W bosons produced with large transverse momentum in pp collisions at \(\sqrt{s} = 7\ \mbox{TeV}\) with the ATLAS experiment
This paper describes an analysis of the angular distribution of W→eν and W→μν decays, using data from pp collisions at $\sqrt{s} = 7\ \mbox{Te...
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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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Open AccessSearch for lepton flavour violation in the eμ continuum with the ATLAS detector in \(\sqrt{s} = 7~\mbox{TeV}\) pp collisions at the LHC
This paper presents a search for the t-channel exchange of an R-parity violating scalar top quark ( \(\tilde{t}\) ) in the e ± μ ∓ ...
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Open AccessForward-backward correlations and charged-particle azimuthal distributions in pp interactions using the ATLAS detector
Using inelastic proton-proton interactions at \( \sqrt {s} = 900 \) GeV and 7 TeV, recorded by the ATLAS detector at the LHC, mea...
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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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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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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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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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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...
