0000000000618573

AUTHOR

Mason Klein

showing 2 related works from this author

Measurements of the top quark branching ratios into channels with leptons and quarks with the ATLAS detector

2015

Measurements of the branching ratios of top quark decays into leptons and jets using events with t[bar over t] (top antitop) pairs are reported. Events were recorded with the ATLAS detector at the LHC in pp collisions at a center-of-mass energy of 7 TeV. The collected data sample corresponds to an integrated luminosity of 4.6  fb[superscript −1]. The measured top quark branching ratios agree with the Standard Model predictions within the measurement uncertainties of a few percent.

decay [top]Top quarkБольшой адронный коллайдерAtlas detectormeasured [cross section]верхние кваркиpair production [top]multiplicity [lepton]High Energy Physics - ExperimentScatteringSubatomär fysikHigh Energy Physics - Experiment (hep-ex)лептоныSubatomic PhysicsJets[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]scattering [p p]CollisionsSUPERSYMMETRYGeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)протон-протонные столкновенияQCPhysicsLarge Hadron ColliderSettore FIS/01 - Fisica SperimentaleSupersymmetryATLASTop Quark Branching RatiosCERN LHC CollProton–proton collisions7000 GeV-cmsPAIR CROSS-SECTIONcolliding beams [p p]Particle Physics - Experiment((n)jet lepton) [final state]top quark branching ratios; leptons; quarks; ATLAS detectorQuarkParticle physicsNuclear and High Energy PhysicsCiências Naturais::Ciências Físicas530 Physics:Ciências Físicas [Ciências Naturais]FOS: Physical sciencesPAIR CROSS-SECTION; PARTON DISTRIBUTIONS; PP COLLISIONS; SUPERSYMMETRY; TEVBranching (polymer chemistry)Accelerator Physics and Instrumentation530Nuclear physicsddc:530Science & TechnologyPP COLLISIONSScatteringHigh Energy Physics::PhenomenologyFísicaAcceleratorfysik och instrumenteringLeptons and Quarksbranching ratio: measured [top]PARTON DISTRIBUTIONSExperimental High Energy PhysicsTEVp p --> 2top anythingHigh Energy Physics::ExperimentATLAS детекторhadronic decay [tau]Leptonexperimental results
researchProduct

Combination of Searches for Invisible Higgs Boson Decays with the ATLAS Experiment

2019

Dark matter particles, if sufficiently light, may be produced in decays of the Higgs boson. This Letter presents a statistical combination of searches for H → invisible decays where H is produced according to the standard model via vector boson fusion, Z(ℓℓ)H, and W/Z(had)H, all performed with the ATLAS detector using 36.1  fb⁻¹ of pp collisions at a center-of-mass energy of √s = 13  TeV at the LHC. In combination with the results at √s = 7 and 8 TeV, an exclusion limit on the H → invisible branching ratio of 0.26(0.17-0.05+0.07) at 95% confidence level is observed (expected).

WIMP nucleon: scatteringMATÉRIA ESCURA13000 GeV-cmsGeneral Physics and Astronomy01 natural sciencesWIMP: dark matterVector bosonHigh Energy Physics - Experimentdark matter [WIMP]Subatomär fysikHiggs particle: hadroproductionHigh Energy Physics - Experiment (hep-ex)vector boson: fusionSubatomic Physicsscattering [p p]S126.7[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]GeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)Z0: hadronic decayvector boson: associated productionPhysicsS030DMPLarge Hadron Colliderhadronic decay [Z0]ATLAS experimentSettore FIS/01 - Fisica SperimentaleConfidence levelsBranching ratioATLAS:Mathematics and natural scienses: 400::Physics: 430::Nuclear and elementary particle physics: 431 [VDP]Vector bosonmedicine.anatomical_structureThe standard modelCERN LHC CollHiggs particle: branching ratio: upper limitHiggs bosonLHCgamma-ray excesscolliding beams [p p]Particle Physics - ExperimentS126:Desig=7Particle physicsp p: scattering530 PhysicsCiências Naturais::Ciências FísicasHiggs bosonDark matter:Ciências Físicas [Ciências Naturais]FOS: Physical sciencesATLAS experimentHiggs particle: invisible decaybranching ratio: upper limit [Higgs particle]LHC ATLAS High Energy Physicsddc:500.2fusion [vector boson]530Standard ModelmodelsParticle dark matterAtlas (anatomy)0103 physical sciencesmedicineDark matterddc:530High Energy Physics010306 general physicshadronic decay [W]Ciencias ExactasATLAS CollaborationW: hadronic decayScience & TechnologyBranching fractionscattering [WIMP nucleon]hep-exATLAS detectorsHigh Energy Physics::Phenomenology:Matematikk og naturvitenskap: 400::Fysikk: 430::Kjerne- og elementærpartikkelfysikk: 431 [VDP]Físicaleptonic decay [Z0]Higgs Boson decayInvisible decaysExperimental High Energy PhysicsZ0: leptonic decayExtensions of Higgs sectorDark matter particlesElementary Particles and Fieldshadroproduction [Higgs particle]associated production [vector boson]High Energy Physics::ExperimentHadron-hadron collisionsstatisticalp p: colliding beamsinvisible decay [Higgs particle]experimental results
researchProduct