0000000000564339

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showing 3 related works from this author

Measurements of underlying-event properties using neutral and charged particles in pp collisions at root s=900 GeV and root s=7 TeV with the ATLAS de…

2011

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. Events were selected using a minimum-bias trigger which required a charged particle in scintillation counters on either side of the interaction point. Particle flows, sensitive to the underlying event, are measured using clusters of energy in the ATLAS calorimeters, taking advantage of their fine granularity. No Monte Carlo generator used in this analysis can accurately describe the measurements. The results are independent of those based on charged particles measured by the ATLAS …

:Mathematics and natural science: 400::Physics: 430 [VDP]Physics and Astronomy (miscellaneous)Physics::Instrumentation and DetectorsMonte Carlo method:Mathematics and natural science: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP]7. Clean energy01 natural sciencesHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)JetsNaturvetenskap[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]QCATLAS detector; LHCPhysicsLarge Hadron ColliderSettore FIS/01 - Fisica SperimentaleATLASCharged particleCalorimetermedicine.anatomical_structureScintillation counterComputingMethodologies_DOCUMENTANDTEXTPROCESSINGDistributionsFísica nuclearLHCNatural Sciencespp collisionsParticle Physics - ExperimentParticle physicsCiências Naturais::Ciências Físicas:Ciências Físicas [Ciências Naturais]FOS: Physical sciencesddc:500.2530Nuclear physicsAtlas (anatomy)0103 physical sciencesmedicineddc:530High Energy Physics010306 general physicsEngineering (miscellaneous)Ciencias ExactasCalorimeterHeraScience & Technologyneutral particle-flow correlationsInteraction point010308 nuclear & particles physicsFísicaQC0793Experimental High Energy PhysicsParticle
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Heavy flavour decay muon production at forward rapidity in proton--proton collisions at sqrt(s) = 7 TeV

2012

The production of muons from heavy flavour decays is measured at forward rapidity in proton-proton collisions at $\sqrt{s} = 7$ TeV collected with the ALICE experiment at the LHC. The analysis is carried out on a data sample corresponding to an integrated luminosity $L_{\rm int} = 16.5$ nb$^{-1}$. The transverse momentum and rapidity differential production cross sections of muons from heavy flavour decays are measured in the rapidity range 2.5 < y < 4, over the transverse momentum range 2 < $p_{\rm T}$ < 12 GeV/$c$. The results are compared to predictions based on perturbative QCD calculations.

ALICE experiment; P-P collisions; Heavy flavour muon decayProtonAlicePhysics::Instrumentation and DetectorsHeavy flavour muon decayheavy flavour01 natural sciencesPp CollisionsSingle MuonsHigh Energy Physics - ExperimentHigh Energy Physics - Experiment (hep-ex)ALICEHeavy Flavour Production[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Nuclear ExperimentAlice ExperimentALICE experiment; Heavy flavour production; LHC; Pp collisions; Single muons; Nuclear and High Energy PhysicsP-P collisionsQuantum chromodynamicsPhysicsLarge Hadron ColliderLuminosity (scattering theory)PhysicsProduction Cross-SectionPerturbative QCDP-P collisionP(P)Over-Bar CollisionsLHC ALICE experiment pp collisions Single muons Heavy flavour productionLHCLhcpp collisionsParticle Physics - ExperimentHeavy flavour productionParticle physicsNuclear and High Energy PhysicsLHC; ALICE; heavy flavourFOS: Physical sciencesalice experiment; pp collisions; heavy flavour production; single muons; lhcNuclear physicsmuon0103 physical sciencesALICE; heavy flavour; muonRapidity010306 general physicsHadron-CollisionsMuonta114Bottom-Quark Production010308 nuclear & particles physicsHigh Energy Physics::PhenomenologyALICE; LHC; CERN; strange particle; pp; 7 TeV; Heavy flavour production; Single muonsALICE experimentSingle muonsJ/Psi ProductionHigh Energy Physics::ExperimentLepton
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Search for the Standard Model Higgs boson in the two photon decay channel with the ATLAS detector at the LHC

2011

A search for the Standard Model Higgs boson in the two photon decay channel is reported, using 1.08 fb−11.08 fb[superscript −1] of proton–proton collision data at a centre-of-mass energy of 7 TeV recorded by the ATLAS detector. No significant excess is observed in the investigated mass range of 110–150 GeV. Upper limits on the cross-section times branching ratio of between 2.0 and 5.8 times the Standard Model prediction are derived for this mass range.

Nuclear and High Energy PhysicsParticle physicsPhotonFOS: Physical sciencesElementary particleFotonesddc:500.201 natural sciencesMassless Particles530Nnlo QCDHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Grand Unified Theoryddc:530CollisionsHigh Energy Physics010306 general physicsNuclear ExperimentBosonPhysicsLarge Hadron ColliderATLAS detector010308 nuclear & particles physicsBranching fractionParton DistributionsSettore FIS/01 - Fisica SperimentaleFísicaATLASHadron CollidersMassless particleATLAS; LHC; Higgs bosonstandard model Higgs bosonHiggs bosonFísica nuclearHigh Energy Physics::ExperimentLHCParticle Physics - Experiment
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