0000000000725276

AUTHOR

J. P. Lundquist

showing 3 related works from this author

Search for high-mass states with one lepton plus missing transverse momentum in proton–proton collisions at s=7 TeV with the ATLAS detector

2011

The ATLAS detector is used to search for high-mass states, such as heavy charged gauge bosons (W', W*) decaying to a charged lepton (electron or muon) and a neutrino. Results are presented based on the analysis of pp collisions at a center-of-mass energy of 7 TeV corresponding to an integrated luminosity of 36 pb-1. No excess beyond standard model expectations is observed. A W' with sequential standard model couplings is excluded at 95% confidence level for masses below 1.49 TeV, and a W*(charged chiral boson) for masses below 1.47 TeV.

PhysicsNuclear and High Energy PhysicsParticle physicsGauge bosonMuon010308 nuclear & particles physicsAtlas detectorAstrophysics::High Energy Astrophysical PhenomenaHigh Energy Physics::PhenomenologyElectroweak interactionElectron7. Clean energy01 natural sciencesNuclear physics0103 physical sciencesHigh Energy Physics::ExperimentNeutrino010306 general physicsLeptonBosonPhysics Letters B
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Search for Supersymmetry Using Final States with One Lepton, Jets, and Missing Transverse Momentum with the ATLAS Detector ins=7  TeVppCollisions

2011

This Letter presents the first search for supersymmetry in final states containing one isolated electron or muon, jets, and missing transverse momentum from sqrt{s} = 7 TeV proton-proton collisions at the LHC. The data were recorded by the ATLAS experiment during 2010 and correspond to a total integrated luminosity of 35 pb-1. No excess above the standard model background expectation is observed. Limits are set on the parameters of the minimal supergravity framework, extending previous limits. For A_0 = 0 GeV, tan beta = 3, mu > 0 and for equal squark and gluino masses, gluino masses below 700 GeV are excluded at 95% confidence level.

PhysicsGluinoParticle physicsMuonLarge Hadron Collider010308 nuclear & particles physicsSupergravityHigh Energy Physics::PhenomenologyATLAS experimentGeneral Physics and AstronomySupersymmetry01 natural sciencesNuclear physics0103 physical sciencesGrand Unified TheoryHigh Energy Physics::ExperimentNuclear Experiment010306 general physicsLeptonPhysical Review Letters
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Calibration of the underground muon detector of the Pierre Auger Observatory

2021

To obtain direct measurements of the muon content of extensive air showers with energy above $10^{16.5}$ eV, the Pierre Auger Observatory is currently being equipped with an underground muon detector (UMD), consisting of 219 10 $\mathrm{m^2}$-modules, each segmented into 64 scintillators coupled to silicon photomultipliers (SiPMs). Direct access to the shower muon content allows for the study of both of the composition of primary cosmic rays and of high-energy hadronic interactions in the forward direction. As the muon density can vary between tens of muons per m$^2$ close to the intersection of the shower axis with the ground to much less than one per m$^2$ when far away, the necessary bro…

muon: showersdata acquisitionPhysics::Instrumentation and DetectorsAstronomyDetector alignment and calibration methods (lasers sources particle-beams)primary [cosmic radiation]Particle detectors7. Clean energy01 natural sciencesEtc)030218 nuclear medicine & medical imaging0302 clinical medicinecalibration [detector]ObservatoryAPDsdetector: calibrationatmosphere [muon]InstrumentationPhoton detectors for UVshowers [muon]Mathematical PhysicsPhoton detectors for UV visible and IR photons (solid-state) (PIN diodes APDsSi-PMTs G-APDs CCDs EBCCDs EMCCDs CMOS imagers etc)Particle-beams)Physicsenergy: highdetector [muon]EBCCDsPhysicselectronicsSettore FIS/01 - Fisica SperimentalePhoton detectors for UV visible and IR photons (solid-state) (PIN diodes APDs Si-PMTs G-APDs CCDs EBCCDs EMCCDs CMOS imagers etc)Astrophysics::Instrumentation and Methods for AstrophysicsSourcesSi-PMTsdetector: alignmentAugermuon: atmosphereobservatorydensity [muon]G-APDshigh [energy]Particle detectorAstrophysics - Instrumentation and Methods for Astrophysicsatmosphere [showers]Detector alignment and calibration methods (lasers sourcesparticle-beams)FOS: Physical sciencesCosmic rayScintillatorParticle detectorVisible and IR photons (solid-state) (PIN diodes03 medical and health sciencesOpticsSilicon photomultipliermuon: density0103 physical sciencesCalibrationddc:530photomultiplier: silicon[PHYS.PHYS.PHYS-INS-DET]Physics [physics]/Physics [physics]/Instrumentation and Detectors [physics.ins-det]ddc:610High Energy PhysicsCMOS imagersInstrumentation and Methods for Astrophysics (astro-ph.IM)scintillation counterParticle detectors; Detector alignment and calibration methods (lasers sources particle-beams); Photon detectors for UV visible and IR photons (solid-state) (PIN diodes APDs Si-PMTs G-APDs CCDs EBCCDs EMCCDs CMOS imagers etc); Performance of High Energy Physics DetectorsPierre Auger ObservatoryMuonshowers: atmosphere010308 nuclear & particles physicsbusiness.industrymuon: detectorCCDscosmic radiation: primaryDetector alignment and calibration methods (lasersEMCCDsanalog-to-digital converterAPDs; CCDs; CMOS imagers; Detector alignment and calibration methods (lasers; EBCCDs; EMCCDs; Etc); G-APDs; Particle detectors; Particle-beams); Performance of High Energy Physics Detectors; Photon detectors for UV; Si-PMTs; Sources; Visible and IR photons (solid-state) (PIN diodesExperimental High Energy Physicssilicon [photomultiplier]Performance of High Energy Physics DetectorsHigh Energy Physics::Experimentphoton: detectorbusinessalignment [detector]RAIOS CÓSMICOSdetector [photon]astro-ph.IM
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