Measurement of D⁎±, D± and Ds ± meson production cross sections in pp collisions at √s=7 TeV with the ATLAS detector

Atlas Collaboration

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Abstract

The production of D⁎±, D± and Ds ± charmed mesons has been measured with the ATLAS detector in pp collisions at s=7 TeV at the LHC, using data corresponding to an integrated luminosity of 280 nb−1. The charmed mesons have been reconstructed in the range of transverse momentum 3.5<pT(D)<100 GeV and pseudorapidity |η(D)|<2.1. The differential cross sections as a function of transverse momentum and pseudorapidity were measured for D⁎± and D± production. The next-to-leading-order QCD predictions are consistent with the data in the visible kinematic region within the large theoretical uncertainties. Using the visible D cross sections and an extrapolation to the full kinematic phase space, the strangeness-suppression factor in charm fragmentation, the fraction of charged non-strange D mesons produced in a vector state, and the total cross section of charm production at s=7 TeV were derived.

Original languageEnglish
Pages (from-to)717-763
Number of pages47
JournalNuclear Physics B
Volume907
DOIs
Publication statusPublished - Jun 2016

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All Science Journal Classification (ASJC) codes

  • Nuclear and High Energy Physics

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