On the Soft-Gluon Resummation in Top Quark Pair Production at Hadron Colliders

Abstract

We uncover a contribution to the NLO/NLL threshold resummed total cross section for top quark pair production at hadron colliders, which has not been taken into account in earlier literature. We derive this contribution - the difference between the singlet and octet hard (matching) coefficients - in exact analytic form. The numerical impact of our findings on the Sudakov resummed cross section turns out to be large, and comparable in size to the current estimates for the theoretical uncertainty of the total cross section. A rough estimate points toward a few percent decrease of the latter at the LHC.

11 pages, 1 figure

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Cited by in corpus (11)

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• Complete off-shell effects in top quark pair hadroproduction with leptonic decay at next-to-leading order
• Threshold resummation for pair production of coloured heavy (s)particles at hadron colliders
• Inclusive Heavy Flavor Hadroproduction in NLO QCD: the Exact Analytic Result
• Two-Loop Leading Color Corrections to Heavy-Quark Pair Production in the Gluon Fusion Channel
• Renormalization-group improved fully differential cross sections for top pair production
• Threshold Resummation for Di-hadron Production in Hadronic Collisions
• Missing Energy and Jets for Supersymmetry Searches
• Resummation of soft and Coulomb corrections for $t\bar{t}h$ production at the LHC
• NNLL threshold resummation for the total top-pair production cross section
• Nonperturbative Effect in Threshold Resummation