We report on recent calculations of the differential cross section for top-quark pair production at hadron colliders. The results are differential with respect to the top-pair invariant mass and to the partonic scattering angle. In these calculations, which were carried out by employing soft-collinear effective theory techniques, we resummed threshold logarithms up to next-to-next-to-leading logarithmic order. Starting from the differential cross section, it is possible to obtain theoretical predictions for the invariant-mass distribution and the total cross section. We summarize here our results for these observables, and we compare them with the results obtained from different calculational methods.
@article{arxiv.1006.4682,
title = {Top-Quark Pair Production Beyond Next-to-Leading Order},
author = {V. Ahrens and A. Ferroglia and M. Neubert and B. D. Pecjak and L. L. Yang},
journal= {arXiv preprint arXiv:1006.4682},
year = {2010}
}
Comments
Talk presented at Loops and Legs in Quantum Field Theory 2010, Woerlitz, Germany, April 25-30, 2010. 6 pages