Next-to-leading order QCD corrections to t over(t, ̄) Z production at the LHC

Achilleas Lazopoulos, Thomas McElmurry, Kirill Melnikov, Frank Petriello*

*Corresponding author for this work

Research output: Contribution to journalArticle

113 Scopus citations

Abstract

We present a calculation of the full next-to-leading order QCD corrections to the scattering process p p → t over(t, ̄) Z. This channel will be used to measure the t over(t, ̄) 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%, while reducing the theoretical error arising from uncalculated higher order corrections to approximately ±10%.

Original languageEnglish (US)
Pages (from-to)62-65
Number of pages4
JournalPhysics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume666
Issue number1
DOIs
StatePublished - Aug 7 2008

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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