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Figure 15

Ratios of $\Dzero$-meson production cross section per unit of rapidity at mid-rapidity ($|y|< 0.5$) to those measured by the LHCb Collaboration~ in three rapidity ranges, $2< y< 2.5$ (left panel), $3< y< 3.5$ (middle panel), and $4< y< 4.5$ (right panel), as a function of $\pt$. The error bars and boxes represent the statistical and systematic uncertainty, respectively Predictions from FONLL calculations are compared to the data points.
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