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Luminosity determination in pp collisions at s=7 TeV using the ATLAS detector at the LHC

Bergen Open Research Archive

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dc.contributor.author The ATLAS Collaboration eng
dc.contributor.author Aad, Georges eng
dc.contributor.author Abbott, Brad eng
dc.contributor.author Abdallah, Jalal eng
dc.contributor.author Abdelalim, A. A. eng
dc.contributor.author Buanes, Trygve eng
dc.date.accessioned 2011-11-29T13:30:31Z
dc.date.available 2011-11-29T13:30:31Z
dc.date.issued 2011-04-27 eng
dc.identifier.citation European Physical Journal C: Particles and Fields 71(4): 1630 en
dc.identifier.issn 1434-6044 eng
dc.identifier.uri http://hdl.handle.net/1956/5255
dc.description There are approximately 2250 authors. Only a few of them have been given author entries in addition to the Collaboration. en
dc.description.abstract Measurements 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
dc.language.iso eng eng
dc.publisher Springer eng
dc.rights.uri http://www.springer.com/open+access/open+choice?SGWID=0-40359-0-0-0 eng
dc.title Luminosity determination in pp collisions at s=7 TeV using the ATLAS detector at the LHC eng
dc.type Peer reviewed eng
dc.type Journal article eng
dc.subject.nsi VDP::Mathematics and natural science: 400::Physics: 430 eng
dc.subject.nsi VDP::Mathematics and natural science: 400::Physics: 430::Nuclear and elementary particle physics: 431 eng
dc.rights.holder Copyright The Author(s) 2011
dc.type.version publishedVersion eng
bora.peerreviewed Peer reviewed eng
bibo.doi http://dx.doi.org/10.1140/epjc/s10052-011-1630-5 eng
dc.identifier.doi http://dx.doi.org/10.1140/epjc/s10052-011-1630-5


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