0000000000209566

AUTHOR

P. Mullen

showing 9 related works from this author

Measurement of exclusive γγ→ℓ+ℓ− production in proton–proton collisions at s=7 TeV with the ATLAS detector

2015

This Letter reports a measurement of the exclusive gamma gamma -> l(+)l(-) (l = e, mu) cross-section in proton-proton collisions at a centre-of-mass energy of 7 TeV by the ATLAS experiment at the LHC, based on an integrated luminosity of 4.6 fb(-1). For the electron or muon pairs satisfying exclusive selection criteria, a fit to the dilepton acoplanarity distribution is used to extract the fiducial cross-sections. The cross-section in the electron channel is determined to be sigma(excl)(gamma gamma -> e+e-) = 0.428 +/- 0.035 (stat.) +/- 0.018 (syst.) pbfor a phase-space region with invariant mass of the electron pairs greater than 24GeV, in which both electrons have transverse momentum p(T)…

PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderMuonProtonATLAS experimentAcoplanarityNuclear physicsmedicine.anatomical_structureAtlas (anatomy)PseudorapiditymedicineHigh Energy Physics::ExperimentInvariant massNuclear ExperimentPhysics Letters B
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Measurements of four-lepton production in pp collisions at s=8 TeV with the ATLAS detector

2016

A search is presented for a high-mass Higgs boson in the , , , and decay modes using the ATLAS detector at the CERN Large Hadron Collider. The search uses proton-proton collision data at a centre-o ...

PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderPhysics::Instrumentation and Detectors010308 nuclear & particles physicsAtlas (topology)Atlas detectorHigh Energy Physics::Phenomenology01 natural sciencesNuclear physics0103 physical sciencesHiggs bosonPhysics::Accelerator PhysicsHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsLeptonPhysics Letters B
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The ATLAS Data Acquisition and High Level Trigger system

2016

Journal of Instrumentation 11(06), P06008 (2016). doi:10.1088/1748-0221/11/06/P06008

High level triggerComputer sciencedata acquisitionPhysics::Instrumentation and DetectorsLarge hadron collideronline filteringTrigger Concepts and Systems (Hardware and Software)Control and Monitor Systems Online01 natural sciencesOnline farms and online filteringData acquisitionRecopilación de datos[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Detectors and Experimental TechniquesInstrumentationMathematical PhysicsSettore FIS/01Online Farms and Online FilteringLarge Hadron ColliderControl and monitor systems onlineATLAS experimentATLASmedicine.anatomical_structureTrigger concepts and systems (hardware and software)Triggers and rulesComputer hardwareperformanceOnline farms andControl and monitor systems online; Data acquisition concepts; Online farms and online filtering; Trigger concepts and systems (hardware and software)Ciências Naturais::Ciências Físicas:Ciências Físicas [Ciências Naturais]Data Acquisition ConceptsATLAS detector; ATLAS experiment; CERN; Large Hadron ColliderATLAS experiment610Accelerator Physics and Instrumentation530LHC ATLAS High Energy Physics TriggerAtlas (anatomy)0103 physical sciencesmedicineddc:610ElectronicsInstrumentation (computer programming)Control and monitor systems online; Data acquisition concepts; Online farms and; online filtering; Trigger concepts and systems (hardware and software)010306 general physicsCiencias ExactasScience & Technology010308 nuclear & particles physicsbusiness.industryData acquisition conceptsFísicaAcceleratorfysik och instrumenteringtriggerSistema en líneaData flow diagrammonitoringHigh Energy Physics::Experimentbusiness
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Measurement of jet charge in dijet events froms=8  TeVppcollisions with the ATLAS detector

2016

The momentum-weighted sum of the charges of tracks associated to a jet is sensitive to the charge of the initiating quark or gluon. This paper presents a measurement of the distribution of momentum ...

QuarkQuantum chromodynamicsCoupling constantPhysicsParticle physics010308 nuclear & particles physicsScatteringAtlas detectorHigh Energy Physics::Latticemedia_common.quotation_subjectNuclear TheoryHigh Energy Physics::PhenomenologyPerturbative QCD01 natural sciencesAsymmetryGluonNuclear physics0103 physical sciencesHigh Energy Physics::Experiment010306 general physicsmedia_commonPhysical Review D
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Measurement of the differential cross-section of highly boosted top quarks as a function of their transverse momentum ins=8  TeVproton-proton collisi…

2016

The differential cross-section for pair production of top quarks with high transverse momentum is measured in 20.3 fb(-1) of proton-proton collisions at a center-of-mass energy of 8 TeV. The measur ...

QuarkPhysicsTop quarkParticle physicsProton010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyNuclear TheoryFunction (mathematics)01 natural sciences7. Clean energyNuclear physicsmedicine.anatomical_structurePair productionAtlas (anatomy)Phase space0103 physical sciencesTransverse momentummedicinePhysics::Accelerator PhysicsNuclear Experiment010306 general physicsPhysical Review D
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High-ET isolated-photon plus jets production in pp collisions at s=8 TeV with the ATLAS detector

2017

The dynamics of isolated-photon plus one-, two- and three-jet production in pp collisions at a centre-of-mass energy of 8 TeV are studied with the ATLAS detector at the LHC using a data set with an ...

Quantum chromodynamicsPhysicsNuclear and High Energy PhysicsParticle physicsPhotonLarge Hadron ColliderPhysics::Instrumentation and Detectors010308 nuclear & particles physicsAtlas detectorAstrophysics::High Energy Astrophysical Phenomena01 natural sciences7. Clean energyNuclear physics0103 physical sciencesTransverse momentumHigh Energy Physics::Experiment010306 general physicsNuclear Physics B
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Measurement of D⁎±, D± and Ds± meson production cross sections in pp collisions at s=7 TeV with the ATLAS detector

2016

The production of D*(+/-), D-+/- and D-S(+/-) charmed mesons has been measured with the ATLAS detector in pp collisions at,/7s = 7 TeV at the LHC, using data corresponding to an integrated luminosi ...

Quantum chromodynamicsPhysicsNuclear and High Energy PhysicsParticle physicsMeson productionLarge Hadron ColliderMesonPhysics::Instrumentation and Detectors010308 nuclear & particles physicsAtlas detectorHigh Energy Physics::PhenomenologyDeep inelastic scattering01 natural sciences7. Clean energymedicine.anatomical_structureAtlas (anatomy)0103 physical sciencesTransverse momentummedicineHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsNuclear Physics B
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Performance of $b$-Jet Identification in the ATLAS Experiment

2016

We thank CERN for the very successful operation of the LHC, as well as the support staff from our institutions without whom ATLAS could not be operated efficiently. We acknowledge the support of ANPCyT, Argentina; YerPhI, Armenia; ARC, Australia; BMWFW and FWF, Austria; ANAS, Azerbaijan; SSTC, Belarus; CNPq and FAPESP, Brazil; NSERC, NRC and CFI, Canada; CERN; CONICYT, Chile; CAS, MOST and NSFC, China; COLCIENCIAS, Colombia; MSMT CR, MPO CR and VSC CR, Czech Republic; DNRF, DNSRC and Lundbeck Foundation, Denmark; IN2P3-CNRS, CEA-DSM/IRFU, France; GNSF, Georgia; BMBF, HGF, and MPG, Germany; GSRT, Greece; RGC, Hong Kong SAR, China; ISF, I-CORE and Benoziyo Center, Israel; INFN, Italy; MEXT an…

detector-systems performancePerformance of High Energy Physics Detectorsecondary [vertex]Elementary particle01 natural sciencesPARTONlaw.inventionSubatomär fysikCHANNELcluster findingscattering [p p]impact parameterGeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)протон-протонные столкновенияQBLarge detector-systems performanceHigh energy physics detectorLarge Hadron ColliderLarge detector systems for particle and astroparticle physics; Large detector-systems performance; Pattern recognition cluster finding calibration and fitting methods; Performance of High Energy Physics Detectors; Instrumentation; Mathematical Physicstrack data analysisQUARK PAIR PRODUCTIONbottom [jet]CERN LHC CollPattern recognition cluster finding calibration and fitting method7000 GeV-cmscolliding beams [p p]performanceHADRONIC COLLISIONSCiências Naturais::Ciências FísicasLarge detectorFitting methodHigh energy physicATLAS LHC High Energy Physics510 MathematicsmuonDISTRIBUTIONSUncertainty analysis Astroparticle physicHigh Energy Physics010306 general physicsSystematic uncertainties AlgorithmsAstroparticle physicsCalibration and fitting methodsScience & Technology010308 nuclear & particles physicsLarge detector systems for particle and astroparticle physicsParticle acceleratorRangingPerformance of High Energy PhysicsCOLLIDERScorrelationExperimental High Energy PhysicsPerformance of High Energy Physics DetectorshadronATLAS детекторБольшой адронный коллайдерcharm [jet]Elementary particleHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)lawSubatomic Physics[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Detectors and Experimental TechniquesInstrumentationUncertainty analysisMathematical PhysicsPhysicsPattern recognition cluster finding calibration and fitting methods4. EducationATLAS experimentSettore FIS/01 - Fisica SperimentaleDetectorsflavor [jet]calibration and fitting methodsATLASLarge Hadron ColliderLarge detector systems for particle and astroparticle physics; Large; detector-systems performance; Pattern recognition cluster finding; calibration and fitting methods; Performance of High Energy Physics; Detectors; PRODUCTION CROSS-SECTION; QUARK PAIR PRODUCTION; ROOT-S=7 TEV; PARTON; DISTRIBUTIONS; HADRONIC COLLISIONS; MATRIX-ELEMENTS; LHC; COLLIDERS; DETECTOR; CHANNEL8. Economic growthCalibrationparticle identification [bottom]LHCImpact parameterParticle Physics - ExperimentParticle physicsdata analysis method530 Physics:Ciências Físicas [Ciências Naturais]FOS: Physical sciences530MATRIX-ELEMENTSparticle identification [charm]on-line [trigger]Pattern recognition0103 physical sciencesComplementary methodddc:610DETECTORROOT-S=7 TEVCluster findingFísicaLarge detector systems for particle and astroparticle physics; Large detector-systems performance; Pattern recognition cluster finding calibration and fitting methods; Performance of High Energy Physics DetectorsPattern recognition systemcalibrationtracksPRODUCTION CROSS-SECTIONefficiencyHadronLarge detector systems for particle and astroparticle physicLargeHigh Energy Physics::ExperimentStatistical correlationstatisticalexperimental results
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Transverse momentum, rapidity, and centrality dependence of inclusive charged-particle production in sNN=5.02 TeV p+ Pb collisions measured by the AT…

2016

Measurements of the per-event charged-particle yield as a function of the charged-particle transverse momentum and rapidity are performed using p+Pbp+Pb collision data collected by the ATLAS experiment at the LHC at a centre-of-mass energy of sqrt (SNN) = 5.01 TeV. Charged particles are reconstructed over pseudorapidity |η|<2.3|η|<2.3 and transverse momentum between 0.1 GeV0.1 GeV and 22 GeV22 GeV in a dataset corresponding to an integrated luminosity of 1 μb−11 μb−1. The results are presented in the form of charged-particle nuclear modification factors, where the p+Pbp+Pb charged-particle multiplicities are compared between central and peripheral p+Pbp+Pb collisions as well as to charged-p…

PhysicsNuclear and High Energy PhysicsParticle physicsLarge Hadron ColliderLuminosity (scattering theory)Proton010308 nuclear & particles physics01 natural sciencesCharged particleNuclear physicsPseudorapidity0103 physical sciencesRapidityNuclear Experiment010306 general physicsNucleonGlauberPhysics Letters B
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