Heavy-Quark Form Factors and Threshold Cross Section at O(α_S^2)

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dc.creatorBernreuther, W.
dc.creatorBonciani, R.
dc.creatorGehrmann, T.
dc.creatorHeinesch, R.
dc.creatorLeineweber, T.
dc.creatorMastrolia, P.
dc.creatorRemiddi, E.
dc.date2006-01-25
dc.date.accessioned2026-07-07T06:58:14Z
dc.date.available2026-07-07T06:58:14Z
dc.descriptionDuring the last year, analytic expressions for the two-loop QCD corrections to the form factors for the vector, axial-vector, scalar and pseudo-scalar vertices involving a pair of heavy quarks, $Q \bar{Q}$, were calculated. The results are valid for arbitrary momentum transfer and mass of the heavy quarks. These form factors have a number of applications, including anomalous couplings, the $e^{+}e^{-} \to Q \bar Q$ cross section, and the forward-backward asymmetry of heavy quarks. Here the $Q {\bar Q}$ threshold cross section is presented with some new second order axial vector contributions.
dc.description5 pages. Presented at the International Europhysics Conference on High Energy Physics (HEP2005), July 21-27 2005, Lisboa, Portugal
dc.identifierhttps://arxiv.org/abs/hep-ph/0601207
dc.identifierhttp://arxiv.org/abs/hep-ph/0601207
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/107276
dc.subjectHigh Energy Physics - Phenomenology
dc.titleHeavy-Quark Form Factors and Threshold Cross Section at O(α_S^2)
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