Threshold Effects in Charm Hadroproduction
  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. 
N. Kidonakis (Cambridge), E. Laenen (NIKHEF and Utrecht), S. Moch   (DESY Zeuthen), and R. Vogt (LBNL and UC Davis)