Next-to-next-to-leading order N -jettiness soft function for tW production

摘要

We calculate theN-jettiness soft function fortWproduction up to next-to-next-to-leading order in QCD, which is an important ingredient of theN-jettiness subtraction method for predicting the differential cross sections of massive colored particle productions. The divergent parts of the results have been checked using the renormalization group equations controlled by the soft anomalous dimension.