NNLL top-antitop production at threshold

Maximilian Stahlhofen; André H. Hoang

doi:10.22323/1.145.0025

NNLL top-antitop production at threshold

Maximilian Stahlhofen (Corresponding author), André H. Hoang

Particle Physics

Publications: Contribution to journal › Meeting abstract/Conference paper

Abstract

We present an update to the NNLL RG-improved QCD prediction of top-antitop production in electron-positron annihilation at threshold. It includes for the first time a complete NNLL resummation of ultrasoft logarithms, which are dominant at this order and give a sizable correction. The renormalization scale dependence of the total resonance cross section decreases substantially compared to earlier predictions, where the ultrasoft logarithms were included only partially.

Original language	English
Article number	025
Number of pages	8
Journal	Proceedings of Science (PoS)
Volume	2011
Issue number	145
DOIs	https://doi.org/10.22323/1.145.0025
Publication status	Published - 2011
Event	10th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology) - Mamallapuram, India Duration: 26 Sept 2011 → 30 Sept 2011

Austrian Fields of Science 2012

103034 Particle physics

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10.22323/1.145.0025

http://arxiv.org/abs/1111.4486v2

Cite this

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abstract = "We present an update to the NNLL RG-improved QCD prediction of top-antitop production in electron-positron annihilation at threshold. It includes for the first time a complete NNLL resummation of ultrasoft logarithms, which are dominant at this order and give a sizable correction. The renormalization scale dependence of the total resonance cross section decreases substantially compared to earlier predictions, where the ultrasoft logarithms were included only partially.",

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AU - Stahlhofen, Maximilian

AU - Hoang, André H.

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PY - 2011

Y1 - 2011

N2 - We present an update to the NNLL RG-improved QCD prediction of top-antitop production in electron-positron annihilation at threshold. It includes for the first time a complete NNLL resummation of ultrasoft logarithms, which are dominant at this order and give a sizable correction. The renormalization scale dependence of the total resonance cross section decreases substantially compared to earlier predictions, where the ultrasoft logarithms were included only partially.

AB - We present an update to the NNLL RG-improved QCD prediction of top-antitop production in electron-positron annihilation at threshold. It includes for the first time a complete NNLL resummation of ultrasoft logarithms, which are dominant at this order and give a sizable correction. The renormalization scale dependence of the total resonance cross section decreases substantially compared to earlier predictions, where the ultrasoft logarithms were included only partially.

UR - http://arxiv.org/abs/1111.4486v2

U2 - 10.22323/1.145.0025

DO - 10.22323/1.145.0025

M3 - Meeting abstract/Conference paper

SN - 1824-8039

VL - 2011

JO - Proceedings of Science (PoS)

JF - Proceedings of Science (PoS)

IS - 145

M1 - 025

T2 - 10th International Symposium on Radiative Corrections (Applications of Quantum Field Theory to Phenomenology)

Y2 - 26 September 2011 through 30 September 2011

ER -

NNLL top-antitop production at threshold

Abstract

Austrian Fields of Science 2012

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