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Different methods for treating the results of higher-order perturbative QCDcalculations of the decay width of the Standard Model Higgs boson into bottomquarks are discusssed. Special attention is paid to the analysis of the $M_H$dependence of the decay width $\Gamma(H\to \bar{b}b})$ in the cases when themass of b-quark is defined as the running parameter in the $\bar{MS}$-schemeand as the quark pole mass. The relation between running and pole masses istaken into account in the order $\alpha_s^4$-approximation. Some specialfeatures of applications of Analytical Perturbation Theory (APT) are commented.

Higgs boson decay into bottom quarks and uncertainties of perturbative QCD predictions