0000000000682176

AUTHOR

Ju Mjoernmark

showing 2 related works from this author

Improved luminosity determination in pp collisions at root s=7 TeV using the ATLAS detector at the LHC

2013

The luminosity calibration for the ATLAS detector at the LHC during pp collisions at sqrt(s) = 7 TeV in 2010 and 2011 is presented. Evaluation of the luminosity scale is performed using several luminosity-sensitive detectors, and comparisons are made of the long-term stability and accuracy of this calibration applied to the pp collisions at sqrt(s) = 7 TeV. A luminosity uncertainty of Delta L/L = +/- 3.5% is obtained for the 47 pb-1 of data delivered to ATLAS in 2010, and an uncertainty of Delta L/L = +/- 1.8% is obtained for the 5.5 fb-1 delivered in 2011.

Particle physicsPhysics and Astronomy (miscellaneous)530 PhysicsAtlas detectorPhysics::Instrumentation and DetectorsAstrophysics::High Energy Astrophysical PhenomenaFOS: Physical sciencesAstrophysics::Cosmology and Extragalactic AstrophysicsInteraction-Point01 natural sciencesHigh Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)Atlas (anatomy)0103 physical sciencesmedicineCalibration[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Fysikddc:530High Energy Physics010306 general physicsNuclear ExperimentGeneralLiterature_REFERENCE(e.g.dictionariesencyclopediasglossaries)Engineering (miscellaneous)PhysicsLarge Hadron ColliderLuminosity (scattering theory)Sensors010308 nuclear & particles physicsSettore FIS/01 - Fisica SperimentaleDetectorFísicaBeamATLASmedicine.anatomical_structureExperimental High Energy PhysicsPhysical SciencesHigh Energy Physics::ExperimentLHCParticle Physics - Experiment
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Search for massive colored scalars in four-jet final states in √s = 7 TeV proton–proton collisions with the ATLAS detector

2011

A search for pair-produced scalar particles decaying to a four-jet final state is presented. The analysis is performed using an integrated luminosity of 34 pb[superscript −1] recorded by the ATLAS detector in 2010. No deviation from the Standard Model is observed. For a scalar mass of 100 GeV (190 GeV) the limit on the scalar gluon pair production cross section at 95% confidence level is 1 nb (0.28 nb). When these results are interpreted as mass limits, scalar-gluons (hyperpions) with masses of 100 to 185 GeV (100 to 155 GeV) are excluded at 95% confidence level with the exception of a mass window of width about 5 GeV (15 GeV) around 140 GeV.

Particle physicsPhysics and Astronomy (miscellaneous)Ciências Naturais::Ciências FísicasAtlas detectorAstrophysics::High Energy Astrophysical Phenomena:Ciências Físicas [Ciências Naturais]Scalar (mathematics)FOS: Physical sciencesddc:500.27. Clean energy01 natural sciences530Partícules (Física nuclear)High Energy Physics - ExperimentNuclear physicsHigh Energy Physics - Experiment (hep-ex)0103 physical sciences[PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex]Fysikddc:530High Energy PhysicsPP Collisions010306 general physicsNuclear ExperimentEngineering (miscellaneous)Ciencias ExactasPhysicsATLAS detector010308 nuclear & particles physicsSettore FIS/01 - Fisica SperimentaleFísicascalarsSupersymmetryATLASmassive colored scalars; proton–proton collisions; ATLAS detectorGluonPair productionPhysical SciencesFísica nuclearproton-proton collisionsHigh Energy Physics::ExperimentLHCSupersymmetryParticle Physics - Experiment
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