Uncertainties of QCD predictions for Higgs boson decay into bottom quarks at NNLO and beyond

Details Uncertainties of QCD predictions for Higgs boson decay into bottom quarks at NNLO and beyond Uncertainties of QCD predictions for Higgs boson decay into bottom quarks at NNLO and beyond

2009-02-09

arxiv.org/abs/0902.1442v3

PoS ACAT08:004,2009

Physics

High Energy Physics

High Energy Physics - Phenomenology

Based on the plenary tak, presented by A.L.K at XII Int. Workshop on Advanced Computing and Analysis Techniques in Physics Res

Scientific paper

An importance of the detailed studies of the theoretical QCD predictions for the decay width of Standard Model Higgs boson into bottom quarks, in the case when $\rm{M_H\leq 2M_W}$, is emphasized. The effects of higher order perturbative QCD corrections up to order $\alpha_s^4$-terms are considered. The resummations of the $\pi^2$ terms resulting from analytical continuation, typical of Minkowskian quantities, is undertaken for the $\Gamma(H\to\bar{b}b)$ decay width. The uncertainties in the calculation of this decay width are analyzed.

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