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Precision predictions for the t+t(bar)
production cross section at hadron colliders.

Ahrens, Valentin; Ferroglia, Andrea; Neubert, Matthias; Pecjak, Ben D.; Yang, Li Lin

Authors

Valentin Ahrens

Andrea Ferroglia

Matthias Neubert

Li Lin Yang



Abstract

We make use of recent results in effective theory and higher-order perturbative calculations to improve the theoretical predictions of the top-quark pair production cross section at hadron colliders. In particular, we supplement the fixed-order NLO calculation with higher-order corrections from soft gluon resummation at NNLL accuracy. Uncertainties due to power corrections to the soft limit are estimated by combining results from single-particle inclusive and pair invariant-mass kinematics. We present our predictions as functions of the top-quark mass in both the pole scheme and the View the MathML source scheme. We also discuss the merits of using threshold masses as an alternative, and calculate the cross section with the top-quark mass defined in the 1S scheme as an illustrative example.

Journal Article Type Article
Publication Date 2011-09
Deposit Date Nov 20, 2012
Journal Physics Letters B
Print ISSN 0370-2693
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 703
Issue 2
Pages 135-141
DOI https://doi.org/10.1016/j.physletb.2011.07.058
Public URL https://durham-repository.worktribe.com/output/1470145