Summary
We report on a measurement of the $D^{+}$-meson production cross section as a\nfunction of transverse momentum ($p_T$) in proton-antiproton ($p\\bar{p}$)\ncollisions at 1.96 TeV center-of-mass energy, using the full data set collected\nby the Collider Detector at Fermilab in Tevatron Run II and corresponding to 10\nfb$^{-1}$ of integrated luminosity. We use $D^{+} \\to K^-\\pi^+\\pi^+$ decays\nfully reconstructed in the central rapidity region $|y|<1$ with transverse\nmomentum down to 1.5 GeV/$c$, a range previously unexplored in $p\\bar{p}$\ncollisions. Inelastic $p\\bar{p}$-scattering events are selected online using\nminimally-biasing requirements followed by an optimized offline selection. The\n$K^-\\pi^+\\pi^+$ mass distribution is used to identify the $D^+$ signal, and the\n$D
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