UNSPECIFIED (2016) Measurement of D∗±, D± and D±s meson production cross sections in pp collisions at √s= 7 TeV with the ATLAS detector. Nuclear Physics B, 907. pp. 717-763. ISSN 0550-3213
1_s2.0_S0550321316300700_main.pdf - Published Version
Available under License Creative Commons Attribution.
Download (3MB)
Abstract
The production of D∗±, D± and D±s 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.