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

Abstract

We calculate the $O({\alpha }_s)$ 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 $m_b\ne 0$ 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

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Cited by in corpus (13)

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• B-mesons from top-quark decay in presence of the charged-Higgs boson in the Zero-Mass Variable-Flavor-Number Scheme
• New angles on top quark decay to a charged Higgs
• Radiatively corrected lepton energy distributions in top quark decays $t\to b{W}^{+}\to b({\ell }^{+}{\nu }_{\ell })$ and $t\to b{H}^{+}\to b({\tau }^{+}{\nu }_{\tau })$ and single charged prong energy distributions from subsequent ${\tau }^{+}$ decays
• Interference effects for the top quark decays $t\to b+W^{+}/H^{+}(\to {\tau }^{+}{\nu }_{\tau })$
• Next-to-leading order corrections to the spin-dependent energy spectrum of hadrons from polarized top quark decay in the general two Higgs doublet model
• QCD analysis of light charged Higgs production through polarized top quark decay in two various frames
• Charged Higgs production from polarized top-quark decay in the 2HDM considering the general-mass variable-flavor-number scheme
• Probing Heavy Charged Higgs Bosons through Bottom Flavored Hadrons in the $H^{+}\to \bar{b}t\to B+X$ Channel in 2HDM
• Hadron production through Higgs decay at next-to-leading order in the general-mass variable-flavor-number scheme