DiffTop: a code for the calculation of the differential cross section for heavy-quark pair production at hadron colliders
DiffTop is the Fortran-based package which allows the user to calculate the differential and total cross section for heavy-quark pair production at hadron colliders in One-particle inclusive (1PI) kinematics. The cross sections are calculated in perturbative QCD at approximate next-to-next-to-leading order (approx.NNLO) by using methods of threshold resummation beyond the leading logarithmic accuracy.