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

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

2008-04-24

arxiv.org/abs/0804.3992v2

V1 Published in Proceedings of Int. Seminar on Contemporary Problems of Elementary Particle Physics, Dedicated to the Memory o

Physics

High Energy Physics

High Energy Physics - Phenomenology

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

Scientific paper

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 $\Gamma(H\to \bar{b}b})$ in the cases when the mass of b-quark is defined as the running parameter in the $\bar{MS}$-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.

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