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

Achilleas Lazopoulos; Thomas McElmurry; Kirill Melnikov; Frank Petriello

doi:10.1016/j.physletb.2008.06.073

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

Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

129 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 language	English (US)
Pages (from-to)	62-65
Number of pages	4
Journal	Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
Volume	666
Issue number	1
DOIs	https://doi.org/10.1016/j.physletb.2008.06.073
State	Published - Aug 7 2008

Funding

The work of A.L. and K.M. was supported by the US Department of Energy under contract DE-FG03-94ER-40833. The work of T.M. and F.P. was supported by the DOE grant DE-FG02-95ER40896, Outstanding Junior Investigator Award, by the University of Wisconsin Research Committee with funds provided by the Wisconsin Alumni Research Foundation, and by the Alfred P. Sloan Foundation.

ASJC Scopus subject areas

Nuclear and High Energy Physics

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@article{0d74c06ada2541ec838eeb04c92af630,

title = "Next-to-leading order QCD corrections to t over(t,{\= }) Z production at the LHC",

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%.",

author = "Achilleas Lazopoulos and Thomas McElmurry and Kirill Melnikov and Frank Petriello",

note = "Funding Information: The work of A.L. and K.M. was supported by the US Department of Energy under contract DE-FG03-94ER-40833. The work of T.M. and F.P. was supported by the DOE grant DE-FG02-95ER40896, Outstanding Junior Investigator Award, by the University of Wisconsin Research Committee with funds provided by the Wisconsin Alumni Research Foundation, and by the Alfred P. Sloan Foundation. ",

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AU - Lazopoulos, Achilleas

AU - McElmurry, Thomas

AU - Melnikov, Kirill

AU - Petriello, Frank

N1 - Funding Information: The work of A.L. and K.M. was supported by the US Department of Energy under contract DE-FG03-94ER-40833. The work of T.M. and F.P. was supported by the DOE grant DE-FG02-95ER40896, Outstanding Junior Investigator Award, by the University of Wisconsin Research Committee with funds provided by the Wisconsin Alumni Research Foundation, and by the Alfred P. Sloan Foundation.

PY - 2008/8/7

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N2 - 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%.

AB - 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%.

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

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