Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2008-04-14
Phys.Lett.B666:62-65,2008
Physics
High Energy Physics
High Energy Physics - Phenomenology
4 pages, revtex, additional references, minor rewording
Scientific paper
10.1016/j.physletb.2008.06.073
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.
Lazopoulos Achilleas
McElmurry Thomas
Melnikov Kirill
Petriello Frank
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