Four-Loop Decoupling Relations for the Strong Coupling

Details Four-Loop Decoupling Relations for the Strong Coupling Four-Loop Decoupling Relations for the Strong Coupling

2005-12-05

arxiv.org/abs/hep-ph/0512058v1

JHEP 0601 (2006) 051

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages

Scientific paper

10.1088/1126-6708/2006/01/051

We compute the matching relation for the strong coupling constant within the
framework of QCD up to four-loop order. This allows a consistent five-loop
running (once the $\beta$ function is available to this order) taking into
account threshold effects. As a side product we obtain the effective coupling
of a Higgs boson to gluons with five-loop accuracy.

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