Electroweak and finite width corrections to top quark decays into transverse and longitudinal $W$-bosons

Abstract

We calculate the electroweak and finite width corrections to the decay of an unpolarized top quark into a bottom quark and a $W$-gauge boson where the helicities of the $W$ are specified as longitudinal, transverse-plus and transverse-minus. Together with the $O({\alpha }_s)$ corrections these corrections may become relevant for the determination of the mass of the top quark through angular decay measurements.

4 pages, 7 postscript figures added

References in corpus (3)

• Complete angular analysis of polarized top decay at O(alpha_s)
• Longitudinal, transverse-plus and transverse-minus W-bosons in unpolarized top quark decays at O(alpha_s)
• One-loop integrals with XLOOPS-GiNaC

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