TY - JOUR

T1 - Next-to-leading order QCD corrections to t over(t, ̄) Z production at the LHC

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

Y1 - 2008/8/7

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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U2 - 10.1016/j.physletb.2008.06.073

DO - 10.1016/j.physletb.2008.06.073

M3 - Article

AN - SCOPUS:47749132961

VL - 666

SP - 62

EP - 65

JO - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

JF - Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics

SN - 0370-2693

IS - 1

ER -