The Threshold t-tbar Cross Section at NNLL Order

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dc.creatorHoang, A. H.
dc.creatorManohar, A. V.
dc.creatorStewart, I. W.
dc.creatorTeubner, T.
dc.date2001-07-13
dc.date.accessioned2026-07-07T11:47:28Z
dc.date.available2026-07-07T11:47:28Z
dc.descriptionThe total cross section for top quark pair production close to threshold in e+e- annihilation is investigated. Details are given about the calculation at next-to-next-to-leading logarithmic order. The summation of logarithms leads to a convergent expansion for the normalization of the cross section, and small residual dependence on the subtraction parameter nu. A detailed analysis of the residual nu dependence is carried out. A conservative estimate for the remaining uncertainty in the normalization of the total cross section from QCD effects is $\lesssim \pm 3%$. This makes precise extractions of the strong coupling and top width feasible, and further studies of electroweak effects mandatory.
dc.description33 pages, 11 figs, a program to produce the cross section will be available soon
dc.identifierhttps://arxiv.org/abs/hep-ph/0107144
dc.identifierhttp://arxiv.org/abs/hep-ph/0107144
dc.identifierPhys.Rev.D65:014014,2002
dc.identifierdoi:10.1103/PhysRevD.65.014014
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202582
dc.subjectHigh Energy Physics - Phenomenology
dc.titleThe Threshold t-tbar Cross Section at NNLL Order
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