One-Loop Helicity Amplitudes for ttbar Production at Hadron Colliders

Abstract

We present compact analytic expressions for all one-loop helicity amplitudes contributing to ttbar production at hadron colliders. Using recently developed generalised unitarity methods and a traditional Feynman based approach we produce a fast and flexible implementation.

29 pages, 5 figures, v2 typos corrected (journal version)

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• Renormalization-group improved fully differential cross sections for top pair production
• Two-loop leading colour QCD helicity amplitudes for top quark pair production in the gluon fusion channel
• NLO QCD Predictions for $Wb\bar{b}$ Production in Association with up to Three Light Jets at the LHC
• One-loop QCD helicity amplitudes for $pp\to t\bar{t}j$ to $O({\epsilon }^2)$
• Top-quark processes at NLO in production and decay
• A unitarity compatible approach to one-loop amplitudes with massive fermions
• External leg corrections in the unitarity method
• Next-to-leading order predictions for WW+jet production
• One-loop Helicity Amplitudes for Top Quark Pair Production in Randall-Sundrum Model
• Determination of the top-quark mass from top-quark pair events with the matrix element method at next-to-leading order: Potential and prospects