Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
1999-07-13
Phys.Rev. D61 (2000) 015002
Physics
High Energy Physics
High Energy Physics - Phenomenology
14 pages, 14figures
Scientific paper
10.1103/PhysRevD.61.015002
The ${\cal O}(\alpha_s)$ QCD corrections to the three-body decay width of the charged Higgs $\Gamma$($H^+\to W^+b\bar{b}$) are discussed in the MSSM model. Our calculations indicate that the standard QCD corrections to the three-body decay mode raise the width by about 12% and the supersymmetric QCD corrections(due to $\tilde{g}, \tilde{t}, \tilde{b}$ exchanges) can be comparable to or even larger than the standard QCD corrctions in some regions of the supersymmetric parameter space. This is mainly due to the effect of large left-right mixing of stop($\tilde{t}$). It could significantly affect the phenomenology of the $H^+$ search.
Bi Xiao-Jun
Dai Yuan-Ben
Qi Xiao-Yuan
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