$ O(α_s) $ corrections to polarized top decay into a charged Higgs $ t(\uparrow) \to H^+ + b $

Kadeer, A.; Körner, J. G.; Mauser, M. C.

$ O(α_s) $ corrections to polarized top decay into a charged Higgs $ t(\uparrow) \to H^+ + b $

Authors

Kadeer, A.

Körner, J. G.

Mauser, M. C.

Description

We calculate the $ O(α_s) $ radiative corrections to polarized top quark decay into a charged Higgs boson and a massive bottom quark in two variants of the two-Higgs-doublet model. The radiative corrections to the polarization asymmetry of the decay may become as large as $ 25 % $. We provide analytical formulae for the unpolarized and polarized rates for $ m_b \neq 0 $ and for $ m_b = 0 $. For $ m_b = 0 $ our closed-form expressions for the unpolarized and polarized rates become rather compact.
24 pages, 5 figures in the text, content modified, comments added, appendices added, references updated, replaced with published version