0000000000653060

AUTHOR

Aca Lee

showing 2 related works from this author

Measurement of the Lund jet plane using charged particles in 13 TeV proton-proton collisions with the ATLAS detector

2020

The prevalence of hadronic jets at the LHC requires that a deep understanding of jet formation and structure is achieved in order to reach the highest levels of experimental and theoretical precision. There have been many measurements of jet substructure at the LHC and previous colliders, but the targeted observables mix physical effects from various origins. Based on a recent proposal to factorize physical effects, this Letter presents a double-differential cross-section measurement of the Lund jet plane using 139  fb−1 of √s=13  TeV proton-proton collision data collected with the ATLAS detector using jets with transverse momentum above 675 GeV. The measurement uses charged particles to ac…

:Kjerne- og elementærpartikkelfysikk: 431 [VDP]Protonshowers [parton]13000 GeV-cmsPhysics::Instrumentation and DetectorsHadronGeneral Physics and Astronomyjet: transverse momentumPhysical Effects01 natural sciencestransverse momentum [jet]High Energy Physics - ExperimentSubatomär fysikHigh Energy Physics - Experiment (hep-ex)Charged ParticlesSubatomic PhysicsComputingMilieux_COMPUTERSANDEDUCATIONscattering [p p][PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Parton showerNuclear ExperimentGeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)PhysicsSettore FIS/01Jet (fluid)Large Hadron ColliderDouble Differential Cross SectionsDetectorhadronic [jet]Monte Carlo [numerical calculations]ATLASTransverse Momentacharged particleCharged particlemedicine.anatomical_structureCERN LHC Coll:Nuclear and elementary particle physics: 431 [VDP]colliding beams [p p]numerical calculations: Monte CarloParticle Physics - Experimentp p: scatteringCiências Naturais::Ciências Físicas530 Physicsformation [jet]Astrophysics::High Energy Astrophysical Phenomena:Ciências Físicas [Ciências Naturais]FOS: Physical sciencesMeasurements ofLHC ATLAS High Energy Physicsjet: formation530GeneralLiterature_MISCELLANEOUSMonte Carlo Modelparton: showersNuclear physicsdifferential cross section: measuredAtlas (anatomy)Fragmentationmeasured [differential cross section]0103 physical sciencesmedicineddc:530High Energy Physicsstructure010306 general physicsATLAS CollaborationScience & Technology010308 nuclear & particles physicsComputerSystemsOrganization_COMPUTER-COMMUNICATIONNETWORKSFísicajet: hadronic530 Physikangular resolutionProton Proton CollisionsElementary Particles and FieldsHigh Energy Physics::ExperimentDetector EffectsHadron-hadron collisionsp p: colliding beamsMathematicsofComputing_DISCRETEMATHEMATICSacceptanceexperimental results
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Search for direct stau production in events with two hadronic τ -leptons in s=13  TeV pp collisions with the ATLAS detector

2020

A search for the direct production of the supersymmetric partners of τ -leptons (staus) in final states with two hadronically decaying τ -leptons is presented. The analysis uses a dataset of p p collisions corresponding to an integrated luminosity of 139     fb − 1 , recorded with the ATLAS detector at the Large Hadron Collider at a center-of-mass energy of 13 TeV. No significant deviation from the expected Standard Model background is observed. Limits are derived in scenarios of direct production of stau pairs with each stau decaying into the stable lightest neutralino and one τ -lepton in simplified models where the two stau mass eigenstates are degenerate. Stau masses from 120 GeV to 390…

PhysicsParticle physicsLarge Hadron Collider010308 nuclear & particles physicsHigh Energy Physics::PhenomenologySupersymmetry7. Clean energy01 natural sciencesStandard ModelMassless particlePair productionmedicine.anatomical_structureAtlas (anatomy)0103 physical sciencesNeutralinomedicineHigh Energy Physics::Experiment010306 general physicsLeptonPhysical Review D
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