CERN Accelerating science

Article
Report number	hep-ph/0011254 ; CERN-TH-2000-340 ; UCSD-PTH-00-25 ; PITHA-00-28 ; CERN-TH-2000-340 ; UCSD-PTH-2000-25 ; PITHA-2000-28
Title	Renormalization-group improved calculation of top-quark production near threshold
Related title	A renormalization group improved calculation of top quark production near threshold
Author(s)	Hoang, A.H. (CERN) ; Manohar, A.V. (UC, San Diego) ; Stewart, Iain W. (UC, San Diego) ; Teubner, T. (Aachen, Tech. Hochsch.)
Affiliation	(RWTH Aachen) ; (CERN) ; (UCSD La Jolla)
Publication	2001
Imprint	20 Nov 2000
Number of pages	4
In:	Phys. Rev. Lett. 86 (2001) 1951
DOI	10.1103/PhysRevLett.86.1951
Subject category	Particle Physics - Phenomenology
Abstract	The top quark cross section close to threshold in $e^+e^-$ annihilation is computed including the summation of logarithms of the velocity at next-to-next-to-leading-logarithmic order in QCD. The remaining theoretical uncertainty in the normalization of the total cross section is at the few percent level, an order of magnitude smaller than in previous next-to-next-to-leading order calculations. This uncertainty is smaller than the effects of a light standard model Higgs boson.

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