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Threshold Effects in Charm Hadroproduction

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arxiv hep-ph/0212173 v2 pith:KPVBK5EZ submitted 2002-12-12 hep-ph

classification hep-ph
keywords thresholdcalculationsnext-to-next-to-leadingcharmconvergencecrossdatadependence
verification ladder T0 review T1 audit T2 compute T3 formal
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abstract

We describe calculations of $c \bar c$ production to next-to-next-to-leading order (NNLO) and next-to-next-to-leading logarithm (NNLL) near threshold in $pp$ and $\pi^- p$ interactions. We study the relevance of these calculations for existing $c \bar c$ total cross section data by examining their sensitivity to partonic threshold kinematics, their convergence properties and scale dependence.

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