arXiv:hep-ph/0511063·v2·High Energy Physics — Phenomenology
Scalar Correlator at O(alpha_s^4), Higgs Decay into b-quarks and Bounds on the Light Quark Masses
P.A. Baikov🇷🇺 · K.G. Chetyrkin🇩🇪 · J.H. Kühn🇩🇪
Abstract
We compute, for the first time, the absorptive part of the massless correlator of two quark scalar currents in five loops. As physical applications we consider the O(alpha_s^4) corrections to the decay rate of the Standard Model Higgs boson into quarks, as well as the constraints on the strange quark mass following from QCD sum rules.
Comments: 5 pages, REVTeX4. Few references updated. The final version, accepted for publication. The complete paper is also available via the www at http://www-ttp.physik.uni-karlsruhe.de/Preprints/