The fully differential single-top-quark cross section in next-to-leading   order QCD
  We present a new next-to-leading order calculation for fully differential single-top-quark final states. The calculation is performed using phase space slicing and dipole subtraction methods. The results of the methods are found to be in agreement. The dipole subtraction method calculation retains the full spin dependence of the final state particles. We show a few numerical results to illustrate the utility and consistency of the resulting computer implementations. 
B. W. Harris, E. Laenen, L. Phaf, Z. Sullivan, and S. Weinzierl