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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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