# Differences

This shows you the differences between two versions of the page.

 — preprints:1997:ttp97-52 [2016/03/17 11:03] (current) Line 1: Line 1: + ====== TTP97-52 Corrections of O(\alpha\alpha_s) to the Decay of the Z Boson into Bottom Quarks ====== + + + For the vertex corrections to the partial decay rate + $\Gamma(Z\to b\bar{b})$ involving the top quark only the leading terms + of order $\alpha\alpha_s$ in the $1/M_t$ expansion are known.  In this + work we compute the missing next-to-leading corrections. They turn out + to be equally important as the leading term and therefore have to be + included into an ${\cal O}(\alpha\alpha_s)$ analysis to arrive at + reliable predictions. + + |**R. Harlander, T. Seidensticker and M. Steinhauser**  | + |** Phys. Lett. B 426 125-132 1998  **  | + | {{preprints:1997:ttp97-52.pdf|PDF}} {{preprints:1997:ttp97-52.ps|PostScript}} [[http://arxiv.org/abs/hep-ph/9712228|arXiv]]   | + | |