D meson production cross sections at ATLAS

The production of $D^{*\pm}$, $D^\pm$ and $D^\pm_s$ charmed mesons has been measured with the ATLAS detector in $pp$ collisions at $\sqrt{s}=7$ TeV using an integrated luminosity of 1.1 nb$^{-1}$. The charmed mesons have been reconstructed in the range of transverse momentum $p_T(D^{(*)}) > 3.5$ GeV and pseudorapidity $|\eta(D^{(*)})| < 2.1$. In addition to integrated cross sections in this visible region, differential cross sections as a function of transverse momentum and pseudorapidity were measured for $D^{*\pm}$ and $D^\pm$ production. The NLO QCD predictions are consistent with the data in the visible kinematic region within the large theoretical uncertainties.