Name: ATLAS_2011_I930220
Year: 2011
Summary: Inclusive and dijet cross-sections of b-jets in pp collisions at $\sqrt(s) = 7$ TeV with ATLAS
Experiment: ATLAS
Collider: LHC 7TeV
InspireID: 930220
Status: VALIDATED
Authors:
 - Stephen Paul Bieniek <stephen.paul.bieniek@cern.ch>
References:
 - Eur.Phys.J. C71 (2011) 1846
 - arXiv:1109.6833 [hep-ex]
RunInfo:
  QCD events at 7 TeV 
NumEvents: 1000000
Beams: [p+, p+]
Energies: [7000]
NeedCrossSection: True
Description:
  'The 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 sqrt(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 < pT < 400 GeV and rapidity in the
   range |y| < 2.1. The bbbar-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 chi 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 bbbar-dijet cross-section. However, it does not
   reproduce the measured inclusive cross-section well, particularly for
   central b-jets with large transverse momenta.'   
BibKey: ATLAS:2011ac
BibTeX: '@article{ATLAS:2011ac,
      author         = "Aad, Georges and others",
      title          = "{Measurement of the inclusive and dijet cross-sections of
                        $b^-$ jets in $pp$ collisions at $\sqrt{s}=7$ TeV with the
                        ATLAS detector}",
      collaboration  = "ATLAS Collaboration",
      journal        = "Eur.Phys.J.",
      volume         = "C71",
      pages          = "1846",
      doi            = "10.1140/epjc/s10052-011-1846-4",
      year           = "2011",
      eprint         = "1109.6833",
      archivePrefix  = "arXiv",
      primaryClass   = "hep-ex",
      reportNumber   = "CERN-PH-EP-2011-146",
      SLACcitation   = "%%CITATION = ARXIV:1109.6833;%%",
}'