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.

arXiv comment4 pages, revtex, additional references, minor rewording

References in corpus (35)

• Observation of Top Quark Production in Pbar-P Collisions
• Observation of the Top Quark
• Fusing Gauge Theory Tree Amplitudes Into Loop Amplitudes
• New Recursion Relations for Tree Amplitudes of Gluons
• MadEvent: Automatic Event Generation with MadGraph
• Cuba - a library for multidimensional numerical integration
• Reducing full one-loop amplitudes to scalar integrals at the integrand level
• Reduction schemes for one-loop tensor integrals
• An automatized algorithm to compute infrared divergent multi-loop integrals
• NLO QCD corrections to t anti-t H production in hadron collisions
• MRST2001: partons and alpha_S from precise deep inelastic scattering and Tevatron jet data
• NNLO global parton analysis
• Reduction of one-loop tensor 5-point integrals
• Direct extraction of one-loop integral coefficients
• The two cutoff phase space slicing method
• Associated Higgs production with top quarks at the Large Hadron Collider: NLO QCD corrections
• On-Shell Methods in Perturbative QCD
• A Numerical Unitarity Formalism for Evaluating One-Loop Amplitudes
• NLO QCD corrections to t tbar + jet production at hadron colliders
• An algebraic/numerical formalism for one-loop multi-leg amplitudes
• Next-to-Leading order Higgs + 2 jet production via gluon fusion
• Numerical integration of one-loop Feynman diagrams for N-photon amplitudes
• High-Energy Approximation of One-Loop Feynman Integrals
• Techniques for QCD calculations by numerical integration
• Probing Electroweak Top Quark Couplings at Hadron Colliders
• 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
• A Calculational Formalism for One-Loop Integrals
• QCD Calculations by Numerical Integration
• Next-to-leading order predictions for WW + 1 jet distributions at the LHC
• Numerical evaluation of loop integrals
• Virtual QCD corrections to Higgs boson plus four parton processes
• Choosing integration points for QCD calculations by numerical integration
• Improved Measurement of ttZ Couplings at the LHC

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