Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/113034
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dc.contributor.authorThe ATLAS Collaborationen
dc.contributor.authorAad, G.en
dc.contributor.authoret al.en
dc.contributor.authorWhite, M.en
dc.date.issued2011en
dc.identifier.citationEuropean Physical Journal C, 2011; 71(12):1846-1-1846-22en
dc.identifier.issn1434-6044en
dc.identifier.issn1434-6052en
dc.identifier.urihttp://hdl.handle.net/2440/113034-
dc.descriptionPublished online: 21 December 2011en
dc.description.abstractThe inclusive and dijet production cross-sections have been measured for jets containing b-hadrons (b-jets) in proton–proton collisions at a centre-of-mass energy of s√=7~TeV, using the ATLAS detector at the LHC. The measurements use data corresponding to an integrated luminosity of 34 pb⁻¹. The b-jets are identified using either a lifetime-based method, where secondary decay vertices of b-hadrons in jets are reconstructed using information from the tracking detectors, or a muon-based method where the presence of a muon is used to identify semileptonic decays of b-hadrons inside jets. The inclusive b-jet cross-section is measured as a function of transverse momentum in the range 20<p T<400 GeV and rapidity in the range |y|<2.1. The bb¯¯-dijet cross-section is measured as a function of the dijet invariant mass in the range 110<m jj<760 GeV, the azimuthal angle difference between the two jets and the angular variable χ in two dijet mass regions. The results are compared with next-to-leading-order QCD predictions. Good agreement is observed between the measured cross-sections and the predictions obtained using POWHEG + Pythia. MC@NLO + Herwig shows good agreement with the measured bb¯¯-dijet cross-section. However, it does not reproduce the measured inclusive cross-section well, particularly for central b-jets with large transverse momenta.en
dc.description.statementofresponsibilityG. Aad ... P. Jackson … L. Lee … A. Petridis … N. Soni ... M. White ... et al. (The ATLAS Collaboration)en
dc.language.isoenen
dc.publisherSpringer-Verlagen
dc.rights© CERN for the benefit of the ATLAS collaboration 2011. Open Access This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.en
dc.titleMeasurement of the inclusive and dijet cross-sections of b-jets in pp collisions at √s=7~TeV with the ATLAS detectoren
dc.title.alternativeMeasurement of the inclusive and dijet cross-sections of b-jets in pp collisions at root s=7~TeV with the ATLAS detectoren
dc.typeJournal articleen
dc.identifier.rmid0020132852en
dc.identifier.doi10.1140/epjc/s10052-011-1846-4en
dc.identifier.pubid17417-
pubs.library.collectionPhysics publicationsen
pubs.library.teamDS03en
pubs.verification-statusVerifieden
pubs.publication-statusPublisheden
Appears in Collections:Physics publications

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