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dc.contributor.authorATLAS, Collaborationeng
dc.contributor.authorAad, Georgeseng
dc.contributor.authorAbbott, Bradeng
dc.contributor.authorAbdallah, Jalaleng
dc.contributor.authorAbdelalim, A. A.eng
dc.contributor.authorBuanes, Trygveeng
dc.date.accessioned2011-11-29T13:30:31Z
dc.date.available2011-11-29T13:30:31Z
dc.date.issued2011-04-27eng
dc.PublishedEuropean Physical Journal C: Particles and Fields 71(4): 1630en
dc.identifier.issn1434-6044en_US
dc.identifier.urihttps://hdl.handle.net/1956/5255
dc.descriptionThere are approximately 2250 authors. Only a few of them have been given author entries in addition to the Collaboration.en
dc.description.abstractMeasurements of luminosity obtained using the ATLAS detector during early running of the Large Hadron Collider (LHC) at s=7 TeV are presented. The luminosity is independently determined using several detectors and multiple algorithms, each having different acceptances, systematic uncertainties and sensitivity to background. The ratios of the luminosities obtained from these methods are monitored as a function of time and of μ, the average number of inelastic interactions per bunch crossing. Residual time- and μ-dependence between the methods is less than 2% for 0<μ<2.5. Absolute luminosity calibrations, performed using beam separation scans, have a common systematic uncertainty of ±11%, dominated by the measurement of the LHC beam currents. After calibration, the luminosities obtained from the different methods differ by at most ±2%. The visible cross sections measured using the beam scans are compared to predictions obtained with the PYTHIA and PHOJET event generators and the ATLAS detector simulation.en_US
dc.language.isoengeng
dc.publisherSpringeren_US
dc.rights.urihttp://www.springer.com/open+access/open+choice?SGWID=0-40359-0-0-0eng
dc.titleLuminosity determination in pp collisions at s=7 TeV using the ATLAS detector at the LHCen_US
dc.typePeer reviewed
dc.typeJournal article
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright The Author(s) 2011en_US
dc.identifier.doihttps://doi.org/10.1140/epjc/s10052-011-1630-5
dc.subject.nsiVDP::Mathematics and natural science: 400::Physics: 430en_US
dc.subject.nsiVDP::Mathematics and natural science: 400::Physics: 430::Nuclear and elementary particle physics: 431en_US


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