Higgs Decay To \bar{b}b: Different Approaches To Resummation Of QCD Effects

Abstract

The comparison between parameterisations of the perturbation results for the decay width of the Standard Model Higgs boson to \bar{b}b-quarks pairs, based on application of \bar{MS}-scheme running quark mass and pole b-quark mass, are presented. In the case of the latter parameterisation taking into account of order O(\alpha_s^3) term is rather important. It is minimising deviations of the results obtained at the O(\alpha_s^2) level from the results, which follow from the running quark mass approach

Comments: 4 pages, 2 figures, submitted tio the Proceedings of 13 Lomonosov Conference on Elementary Particle Physics, Moscow State University, August 23-29, 2007, 1 reference corrected