arXiv:hep-ph/0011324·v2·High Energy Physics — Phenomenology
Electroweak Corrections to the Top Quark Decay
S. M. Oliveira🇵🇹 · L. Bruecher🇵🇹 · R. Santos🇵🇹 · A. Barroso🇵🇹
Abstract
We have calculated the one-loop electroweak corrections to the decay t-> bW+, including the counterterm for the CKM matrix elements V(tb). Previous calculations used an incorrect delta V(tb) that led to a gauge dependent amplitude. However, since the contribution stemming from delta V(tb) is small, those calculations only underestimate the width by roughly one part in 10^5.
Comments: 7 pages, 2 figures