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      Measurement of the bb¯¯ dijet cross section in pp collisions at √s = 7 TeV with the ATLAS detector

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      Creators
      Aaboud, M.
      Caron, S.
      Colasurdo, L.
      Croft, V.
      Groot, N. de
      Filthaut, F.
      Galea, C.
      König, A.C
      Nektarijevic, S.
      Strubig, A.
      et al.
      Date of Archiving
      2016
      Archive
      HEPData
      Related links
      https://hepdata.net/record/ins1478355
      DOI
      https://doi.org/10.17182/hepdata.75316
      Related publications
      Measurement of the bb¯¯ dijet cross section in pp collisions at √s = 7 TeV with the ATLAS detector  
      Publication type
      Dataset
      Access level
      Open access
      Please use this identifier to cite or link to this item: https://hdl.handle.net/2066/173071   https://hdl.handle.net/2066/173071
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      Organization
      High Energy Physics
      Experimental High Energy Physics
      Audience(s)
      Physics
      Key words
      Large Hadron Collider; b-jets; di-jet system
      Abstract
      Measurement of the dijet production cross section for jets containing a b-hadron (b-jets) in proton proton collisions at a centre-of-mass energy of 7 TeV, with 4.2 fb^-1 of data collected by the ATLAS detector in 2011. The cross section is measured for events with two identified b-jets with a transverse momentum pT > 20 GeV and a minimum separation in the eta-phi plane of Delta R = 0.4. At least one of the jets in the event is required to have pT > 270 GeV. The cross section is measured differentially as a function of the dijet invariant mass, dijet transverse momentum, boost of the dijet system, and of the rapidity difference, azimuthal angle and angular distance between the b-jets. Ranges of the variables of the measured differential cross sections: - m_bb : 50 - 1000 GeV (mass of the b-bbar di-jet system) - pT_bb : 0 - 400 GeV (transverse momentum of the b-bbar di-jet system) - y_B : 0 - 2.5 (boost of the b-bbar dijet system y_b = (y1+y2)/2 ) - Delta phi : 0 - pi (azimuthal angle between the two b-jets) - Delta R : 0.4 - 4.0 (angular distance between the two b-jets) - y* : 0 - 1.7 (rapidity difference between the two b-jets y* = |y1 -y2|/2 ) Cuts defining the fiducial region: - Leading jet pT > 270 GeV and |eta| < 3.2 - Both b-jets with pT > 20 GeV and |eta| < 2.5 - The two b-jets must have an angular separation Delta R > 0.4.
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      • Datasets [1263]
      • Faculty of Science [32143]
       
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