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

Abstract

Different methods for treating the results of higher-order perturbative QCD calculations of the decay width of the Standard Model Higgs boson into bottom quarks are discusssed. Special attention is paid to the analysis of the $M_H$ dependence of the decay width $Γ(H\to \bar{b}b})$ in the cases when the mass of b-quark is defined as the running parameter in the $\overline{MS}$-scheme and as the quark pole mass. The relation between running and pole masses is taken into account in the order ${\alpha }_s^4$-approximation. Some special features of applications of Analytical Perturbation Theory (APT) are commented.

16 pages, 4 figures, misprints corrected, 2 references added

References in corpus (4)

• Resummation in (F)APT
• Standard Model Higgs Searches
• Analyticity of QCD observables beyond leading-order perturbation theory
• Higgs Decay To \bar{b}b: Different Approaches To Resummation Of QCD Effects

Cited by in corpus (1)

• Resummation approach in Fractional APT: How many loops do we need to calculate?