Next-to-leading order QCD corrections to t-tbar-Z production at the LHC

Abstract

We present a calculation of the full next-to-leading order QCD corrections to the scattering process pp \to t tbar Z. This channel will be used to measure the t tbar Z electroweak couplings at the Large Hadron Collider. These couplings cannot be directly measured in current experiments. To obtain these results, we utilize a novel, completely numerical approach to performing higher order QCD calculations. We find that for reasonable values of the renormalization and factorization scales the QCD corrections increase the leading order result by 35 percent, while reducing the theoretical error arising from uncalculated higher order corrections to approximately 10 percent.

4 pages, revtex, additional references, minor rewording

References in corpus (10)

• Reducing full one-loop amplitudes to scalar integrals at the integrand level
• Direct extraction of one-loop integral coefficients
• A Numerical Unitarity Formalism for Evaluating One-Loop Amplitudes
• NLO QCD corrections to t tbar + jet production at hadron colliders
• Next-to-Leading order Higgs + 2 jet production via gluon fusion
• Numerical integration of one-loop Feynman diagrams for N-photon amplitudes
• QCD corrections to tri-boson production
• QCD corrections to hadronic WWZ production with leptonic decays
• NLO QCD corrections to WW+jet production at hadron colliders
• Next-to-leading order predictions for WW + 1 jet distributions at the LHC

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