Search results for: T. Barber

Items from 1 to 20 out of 249 results

article

Spatio-temporal Image Correlation (STIC): Estimation of Heart Rate Using STIC Compared with 2-D Pulsed Wave Doppler in a Flow Phantom

G.N. Stevenson, R. Keshavarzi, A.G. de Melo Tavares Ferreira, T. Barber, more

Ultrasound in Medicine & Biology > 2017 > 43 > 10 > 2507-2508

article

Role of inlet reactant mixedness on the thermodynamic performance of a rotating detonation engine

C. A. Nordeen, D. Schwer, F. Schauer, J. Hoke, more

Shock Waves > 2016 > 26 > 4 > 417-428

Rotating detonation engines have the potential to achieve the high propulsive efficiencies of detonation cycles in a simple and effective annular geometry. A two-dimensional Euler simulation is modified to include mixing factors to simulate the imperfect mixing of injected reactant streams. Contrary to expectations, mixing is shown to have a minimal impact on performance. Oblique detonation waves...

article

Erratum to: Role of inlet reactant mixedness on the thermodynamic performance of a rotating detonation engine

C. A. Nordeen, D. Schwer, F. Schauer, J. Hoke, more

Shock Waves > 2016 > 26 > 4 > 529-529

article

Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at $$\sqrt{s_{_\text {NN}}} = 5.02$$ s NN = 5.02 TeV with the ATLAS detector

G. Aad, T. Abajyan, B. Abbott, J. Abdallah, more

The European Physical Journal C > 2016 > 76 > 4 > 1-30

The centrality dependence of the mean charged-particle multiplicity as a function of pseudorapidity is measured in approximately 1 $$\upmu $$ μ b $$^{-1}$$ - 1 of proton–lead collisions at a nucleon–nucleon centre-of-mass energy of $$\sqrt{s_{_\text {NN}}} = 5.02$$ s NN = 5.02 $$\text {TeV}$$ TeV using the ATLAS detector at the Large Hadron Collider...

article

Jet energy measurement and its systematic uncertainty in proton–proton collisions at $$\sqrt{s}=7$$ s = 7 TeV with the ATLAS detector

Atlas Collaboration, G. Aad, T. Abajyan, B. Abbott, more

The European Physical Journal C > 2015 > 75 > 1 > 1-101

The jet energy scale (JES) and its systematic uncertainty are determined for jets measured with the ATLAS detector using proton–proton collision data with a centre-of-mass energy of $$\sqrt{s}=7$$ s = 7 TeV corresponding to an integrated luminosity of $$4.7$$ 4.7 $$\,\,\text{ fb }^{-1}$$ fb - 1 . Jets are reconstructed from energy deposits forming topological...

article

Re-entrant jet mechanism for periodic cavitation shedding in a cylindrical orifice

C. Stanley, T. Barber, G. Rosengarten

International Journal of Heat and Fluid Flow > 2014 > 50 > Complete > 169-176

Periodic shedding of cloud cavitation is a common form of cavitation instability. The motion of a re-entrant liquid jet is central to this process but the mechanism which drives the phenomenon remains unclear, particularly for cavitation in cylindrical orifices. The current work describes an experimental investigation of the re-entrant jet mechanism for periodic cloud shedding in a large-scale (8...

article

Measurement of the production of a W boson in association with a charm quark in pp collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 5 > 1-67

Abstract The production of a W boson in association with a single charm quark is studied using 4.6 fb⁻¹ of pp collision data at $\sqrt{s}$ = 7 TeV collected with the ATLAS detector at the Large Hadron Collider. In events in which a W boson decays to an electron or muon, the charm quark is tagged either by its semileptonic decay to a muon or by the presence of a charmed meson. The integrated...

article

Measurement of dijet cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 5 > 1-67

Abstract Double-differential dijet cross-sections measured in pp collisions at the LHC with a 7 TeV centre-of-mass energy are presented as functions of dijet mass and half the rapidity separation of the two highest-p_T jets. These measurements are obtained using data corresponding to an integrated luminosity of 4.5 fb⁻¹, recorded by the ATLAS detector in 2011. The data are corrected for detector effects...

article

Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in $\sqrt{s}$ = 8 TeV pp collisions with the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 4 > 1-46

Abstract A search for the direct production of charginos and neutralinos in final states with three leptons and missing transverse momentum is presented. The analysis is based on 20.3 fb⁻¹ of $\sqrt{s}$ = 8 TeV proton-proton collision data delivered by the Large Hadron Collider and recorded with the ATLAS detector. Observations are consistent with the Standard Model expectations and limits are...

article

Erratum: Search for new phenomena in final states with large jet multiplicities and missing transverse momentum at $\sqrt{s}$ = 8 TeV proton-proton collisions using the ATLAS experiment

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 1 > 1-18

article

Measurement of χ _c1 and χ _c2 production with s $$ \sqrt{s} $$ = 7 TeV pp collisions at ATLAS

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 7 > 1-52

Abstract The prompt and non-prompt production cross-sections for the χ _c1 and χ _c2 charmonium states are measured in pp collisions at s $$ \sqrt{s} $$ = 7 TeV with the ATLAS detector at the LHC using 4.5 fb⁻¹ of integrated luminosity. The χ _c states are reconstructed through the radiative decay χ _c → J/ψγ (with J/ψ → μ ⁺ μ ⁻) where photons are reconstructed from γ → e ⁺ e ⁻ conversions...

article

Muon reconstruction efficiency and momentum resolution of the ATLAS experiment in proton–proton collisions at $$\sqrt{s}=7$$ s = 7 TeV in 2010

The ATLAS Collaboration, G. Aad, T. Abajyan, B. Abbott, more

The European Physical Journal C > 2014 > 74 > 9 > 1-32

This paper presents a study of the performance of the muon reconstruction in the analysis of proton–proton collisions at $$\sqrt{s}=7$$ s = 7 TeV at the LHC, recorded by the ATLAS detector in 2010. This performance is described in terms of reconstruction and isolation efficiencies and momentum resolutions for different classes of reconstructed muons. The results are obtained from an analysis...

article

Measurement of the production cross section of prompt J/ψ mesons in association with a W ^± boson in pp collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 4 > 1-37

Abstract The process pp → W ^± J/ψ provides a powerful probe of the production mechanism of charmonium in hadronic collisions, and is also sensitive to multiple parton interactions in the colliding protons. Using the 2011 ATLAS dataset of 4.5 fb⁻¹ of $\sqrt{s}$ = 7 TeV pp collisions at the LHC, the first observation is made of the production of W ^± + prompt J/ψ events in hadronic collisions,...

article

The differential production cross section of the $$\phi $$ ϕ (1020) meson in $$\sqrt{s}$$ s = 7 TeV $$pp$$ p p collisions measured with the ATLAS detector

The ATLAS Collaboration, G. Aad, T. Abajyan, B. Abbott, more

The European Physical Journal C > 2014 > 74 > 7 > 1-21

A measurement is presented of the $$\phi \times \mathcal {BR}(\phi \rightarrow K^{+}K^{-})$$ ϕ × BR ( ϕ → K + K - ) production cross section at $$\sqrt{s}$$ s = 7 TeV using $$pp$$ p p collision data corresponding to an integrated luminosity of 383 $$\mathrm {\upmu b^{-1}}$$ μ b - 1 , collected with the ATLAS experiment at the LHC. Selection of ...

article

Search for direct top-squark pair production in final states with two leptons in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 6 > 1-66

Abstract A search is presented for direct top-squark pair production in final states with two leptons (electrons or muons) of opposite charge using 20.3 fb⁻¹ of pp collision data at $\sqrt{s}$ = 8 TeV, collected by the ATLAS experiment at the Large Hadron Collider in 2012. No excess over the Standard Model expectation is found. The results are interpreted under the separate assumptions (i) that...

article

Measurement of the top quark pair production charge asymmetry in proton-proton collisions at $\sqrt{s}$ = 7 TeV using the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 2 > 1-38

Abstract This paper presents a measurement of the top quark pair ( $t\overline{t}$ ) production charge asymmetry A _C using 4.7 fb⁻¹ of proton-proton collisions at a centre-of-mass energy $\sqrt{s}$ = 7 TeV collected by the ATLAS detector at the LHC. A $t\overline{t}$ -enriched sample of events with a single lepton (electron or muon), missing transverse momentum and at least four high...

article

Measurement of the low-mass Drell-Yan differential cross section at s $$ \sqrt{s} $$ = 7 TeV using the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 6 > 1-46

Abstract The differential cross section for the process Z/γ ^∗ → ℓℓ (ℓ = e, μ) as a function of dilepton invariant mass is measured in pp collisions at s $$ \sqrt{s} $$ = 7 TeV at the LHC using the ATLAS detector. The measurement is performed in the e and μ channels for invariant masses between 26 GeV and 66 GeV using an integrated luminosity of 1.6 fb⁻¹ collected in 2011 and these measurements...

article

Measurement of the electroweak production of dijets in association with a Z-boson and distributions sensitive to vector boson fusion in proton-proton collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector

The ATLAS collaboration, G. Aad, T. Abajyan, B. Abbott, more

Journal of High Energy Physics > 2014 > 2014 > 4 > 1-56

Abstract Measurements of fiducial cross sections for the electroweak production of two jets in association with a Z-boson are presented. The measurements are performed using 20.3 fb⁻¹ of proton-proton collision data collected at a centre-of-mass energy of $\sqrt{s}$ = 8 TeV by the ATLAS experiment at the Large Hadron Collider. The electroweak component is extracted by a fit to the dijet invariant...

article

Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton–proton collision data

The ATLAS Collaboration, G. Aad, T. Abajyan, B. Abbott, more

The European Physical Journal C > 2014 > 74 > 7 > 1-38

Many of the interesting physics processes to be measured at the LHC have a signature involving one or more isolated electrons. The electron reconstruction and identification efficiencies of the ATLAS detector at the LHC have been evaluated using proton–proton collision data collected in 2011 at $$\sqrt{s}= 7$$ s = 7 TeV and corresponding to an integrated luminosity of 4.7 fb $$^{-1}$$...

article

Measurement of the underlying event in jet events from 7 $$\text {TeV}$$ TeV proton–proton collisions with the ATLAS detector

The ATLAS Collaboration, G. Aad, T. Abajyan, B. Abbott, more

The European Physical Journal C > 2014 > 74 > 8 > 1-29

Distributions sensitive to the underlying event in QCD jet events have been measured with the ATLAS detector at the LHC, based on $$37~\text {pb}^{-1}$$ 37 pb - 1 of proton–proton collision data collected at a centre-of-mass energy of 7 $$\text {TeV}$$ TeV . Charged-particle mean $$p_{\mathrm {T}}$$ p T and densities of all-particle $$E_{\mathrm {T}}$$ E T...

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INFONA - science communication portal

Search results for: T. Barber

Spatio-temporal Image Correlation (STIC): Estimation of Heart Rate Using STIC Compared with 2-D Pulsed Wave Doppler in a Flow Phantom

Role of inlet reactant mixedness on the thermodynamic performance of a rotating detonation engine

Erratum to: Role of inlet reactant mixedness on the thermodynamic performance of a rotating detonation engine

Measurement of the centrality dependence of the charged-particle pseudorapidity distribution in proton–lead collisions at $$\sqrt{s_{_\text {NN}}} = 5.02$$ s NN = 5.02 TeV with the ATLAS detector

Jet energy measurement and its systematic uncertainty in proton–proton collisions at $$\sqrt{s}=7$$ s = 7 TeV with the ATLAS detector

Re-entrant jet mechanism for periodic cavitation shedding in a cylindrical orifice

Measurement of the production of a W boson in association with a charm quark in pp collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector

Measurement of dijet cross-sections in pp collisions at 7 TeV centre-of-mass energy using the ATLAS detector

Search for direct production of charginos and neutralinos in events with three leptons and missing transverse momentum in $\sqrt{s}$ = 8 TeV pp collisions with the ATLAS detector

Erratum: Search for new phenomena in final states with large jet multiplicities and missing transverse momentum at $\sqrt{s}$ = 8 TeV proton-proton collisions using the ATLAS experiment

Measurement of χ _c1 and χ _c2 production with s $$ \sqrt{s} $$ = 7 TeV pp collisions at ATLAS

Muon reconstruction efficiency and momentum resolution of the ATLAS experiment in proton–proton collisions at $$\sqrt{s}=7$$ s = 7 TeV in 2010

Measurement of the production cross section of prompt J/ψ mesons in association with a W ^± boson in pp collisions at $\sqrt{s}$ = 7 TeV with the ATLAS detector

The differential production cross section of the $$\phi $$ ϕ (1020) meson in $$\sqrt{s}$$ s = 7 TeV $$pp$$ p p collisions measured with the ATLAS detector

Search for direct top-squark pair production in final states with two leptons in pp collisions at $\sqrt{s}$ = 8 TeV with the ATLAS detector

Measurement of the top quark pair production charge asymmetry in proton-proton collisions at $\sqrt{s}$ = 7 TeV using the ATLAS detector

Measurement of the low-mass Drell-Yan differential cross section at s $$ \sqrt{s} $$ = 7 TeV using the ATLAS detector

Measurement of the electroweak production of dijets in association with a Z-boson and distributions sensitive to vector boson fusion in proton-proton collisions at $\sqrt{s}$ = 8 TeV using the ATLAS detector

Electron reconstruction and identification efficiency measurements with the ATLAS detector using the 2011 LHC proton–proton collision data

Measurement of the underlying event in jet events from 7 $$\text {TeV}$$ TeV proton–proton collisions with the ATLAS detector

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