Heavy-quark correlations in hadron collisions at next-to-leading order

We present a calculation of the fully exclusive parton cross sections for heavy-quark production at order O(αS3) in QCD. Our result includes the Born cross section for producing a Qanti Q pair, of order O(αS2), the virtual corrections to the Born cross section, of order O(αS3), and the cross section for producing a Qanti Q pair plus a light parton, of order O(αS3). We can therefore compute distributions in which correlations among the heavy quarks (and, if present, the associated jet) are correctly taken into account up to order O(αS3). We present some applications of phenomenological interest to top, bottom and charm production at hadron colliders. (orig.)