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Scientific article
English

Measurement of the b-hadron production cross section using decays to D⁎+μX final states in pp collisions at √s=7 TeV with the ATLAS detector

ContributorsATLAS Collaboration
Published inNuclear physics. B, vol. 864, no. 3, p. 341-381
Publication date2012
Abstract

The b -hadron production cross section is measured with the ATLAS detector in pp collisions at √s=7 TeV, using 3.3 pb−13.3 pb−1 of integrated luminosity, collected during the 2010 LHC run. The b-hadrons are selected by partially reconstructing D⁎+μ−X final states. Differential cross sections are measured as functions of the transverse momentum and pseudorapidity. The measured production cross section for a b-hadron with pT>9 GeVpT>9 GeV and |η|<2.5|η|<2.5 is 32.7±0.8(stat.)−6.8+4.5(syst.)μb, higher than the next-to-leading-order QCD predictions but consistent within the experimental and theoretical uncertainties

Keywords
  • QCD
  • Flavour physics
  • B physics
  • Heavy quark production
Citation (ISO format)
ATLAS Collaboration. Measurement of the <em>b</em>-hadron production cross section using decays to <em>D<sup>⁎+</sup>μ<sup>−</sup></em>X final states in <em>pp</em> collisions at √s=7 TeV with the ATLAS detector. In: Nuclear physics. B, 2012, vol. 864, n° 3, p. 341–381. doi: 10.1016/j.nuclphysb.2012.07.009
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ISSN of the journal0550-3213
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