162 Result(s)
within
**ang-peng Chen
Physics
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Article
Controlling chaos by develo** spiral wave from heterogeneity in excitable medium
We study pattern formation induced by a spiral wave develo** from heterogeneities in an excitable medium. Turbulence can be suppressed by a spiral wave from the heterogeneity, forming multiple coexistent sys...
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Article
Fluorescent emission characteristics of polycrystalline diamond film prepared by direct current jet CVD
The free-standing diamond films are deposited on molybdenum substrate by direct current jet chemical vapor deposition (DCJCVD). X-ray diffraction, Raman spectroscopy and cathodoluminescence (CL) measurement ar...
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Article
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 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 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 AccessMeasurements of underlying-event properties using neutral and charged particles in pp collisions at \(\sqrt{s}=900\) GeV and \(\sqrt{s}=7\) TeV with the ATLAS detector at the LHC
We present first measurements of charged and neutral particle-flow correlations in pp collisions using the ATLAS calorimeters. Data were collected in 2009 and 2010 at centre-of-mass energies of 900 GeV and 7 TeV....
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Article
Hadamard precoding for PAPR reduction in optical direct detection OFDM systems
The high peak-to-average power ration (PAPR) values of optical orthogond frequency division multiplexing (OFDM) signal limit the system nonlinear tolerance (NLT). In this paper, a novel method based on Hadamar...
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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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Search for new phenomena in final states with large jet multiplicities and missing transverse momentum using \(\sqrt {s}\) = 7 TeV pp collisions with the ATLAS detector
Results are presented of a search for any particle(s) decaying to six or more jets in association with missing transverse momentum. The search is performed using 1.34fb−1 of
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Article
Open AccessMeasurement of the jet fragmentation function and transverse profile in proton–proton collisions at a center-of-mass energy of 7 TeV with the ATLAS detector
The jet fragmentation function and transverse profile for jets with 25 GeV<p T jet<500 GeV and |η jet|<1.2 produced in proton–proton collisions with a center-of-mass energy of 7 TeV are presented. The measurement...
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Open AccessPerformance of missing transverse momentum reconstruction in proton-proton collisions at \(\sqrt{s} = 7~\mbox{TeV}\) with ATLAS
The measurement of missing transverse momentum in the ATLAS detector, described in this paper, makes use of the full event reconstruction and a calibration based on reconstructed physics objects. The performan...
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Open AccessPerformance of the ATLAS Trigger System in 2010
Proton–proton collisions at \(\sqrt{s}=7\) TeV and heavy ion collisions at ...
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Article
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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Article
Open AccessRapidity gap cross sections measured with the ATLAS detector in pp collisions at \(\sqrt{s} = 7 \mbox{~TeV}\)
Pseudorapidity gap distributions in proton-proton collisions at \(\sqrt {s} =7~\mbox{~TeV}\) are studied using a minimum bias dat...
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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 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 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 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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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 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 \( \sqrt {s} = 7 \) ...
