CERN Accelerating science

Article
Report number	arXiv:1303.6254 ; CERN-PH-TH-2013-056 ; TTK-13-08 ; CERN-PH-TH-2013-056 ; TTK-13-08
Title	The total top quark pair production cross-section at hadron colliders through $\cal{O} (\alpha_{S}^{4})$
Author(s)	Czakon, Michał (RWTH Aachen U.) ; Fiedler, Paul (RWTH Aachen U.) ; Mitov, Alexander (CERN)
Publication	2013-06-18
Imprint	26 Mar 2013
Number of pages	6
Note	Comments: 6 pages, 4 figures 6 pages, 4 figures
In:	Phys. Rev. Lett. 110 (2013) 252004
DOI	10.1103/PhysRevLett.110.252004
Subject category	Particle Physics - Phenomenology
Abstract	We compute the next-to-next-to-leading order (NNLO) QCD correction to the total cross-section for the reaction gg \to t\bar t + X. Together with the partonic channels we computed previously, the result derived in this letter completes the set of NNLO QCD corrections to the total top pair production cross-section at hadron colliders. Supplementing the fixed order results with soft-gluon resummation with next-to-next-to-leading logarithmic accuracy we estimate that the theoretical uncertainty of this observable due to unknown higher order corrections is about 3% at the LHC and 2.2% at the Tevatron. We observe a good agreement between the Standard Model predictions and the available experimental measurements. The very high theoretical precision of this observable allows a new level of scrutiny in parton distribution functions and new physics searches.
Copyright/License	Preprint: © 2013-2025 CERN (License: CC-BY-3.0)

Corresponding record in: Inspire