Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2011-11-24
Physics
High Energy Physics
High Energy Physics - Phenomenology
17 pages, 4 figures. V2 updates tables and figures including results for sqrt(S)=8 TeV. Version to appear in Phys Lett B
Scientific paper
Incorporating all recent theoretical advances, we resum soft-gluon corrections to the total $t\bar t$ cross-section at hadron colliders at the next-to-next-to-leading logarithmic (NNLL) order. We perform the resummation in the well established framework of Mellin $N$-space resummation. We exhaustively study the sources of systematic uncertainty like renormalization and factorization scale variation, power suppressed effects and missing two- and higher-loop corrections. The inclusion of soft-gluon resummation at NNLL brings only a minor decrease in the perturbative uncertainty with respect to the NLL approximation, and a small shift in the central value, consistent with the quoted uncertainties. These numerical predictions agree with the currently available measurements from the Tevatron and LHC and have uncertainty of similar size. We conclude that significant improvements in the $t\bar t$ cross-sections can potentially be expected only upon inclusion of the complete NNLO corrections.
Cacciari Matteo
Czakon Michal
Mangano Michelangelo L.
Mitov Alexander
Nason Paolo
No associations
LandOfFree
Top-pair production at hadron colliders with next-to-next-to-leading logarithmic soft-gluon resummation does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Top-pair production at hadron colliders with next-to-next-to-leading logarithmic soft-gluon resummation, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Top-pair production at hadron colliders with next-to-next-to-leading logarithmic soft-gluon resummation will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-173369