Four-loop decoupling relations for the strong coupling | Zendy

York Schröder | Zendy; Matthias Steinhauser | Zendy

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Four-loop decoupling relations for the strong coupling

Author(s) -

York Schröder,

Matthias Steinhauser

Publication year - 2006

Publication title -

journal of high energy physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.998

H-Index - 261

eISSN - 1126-6708

pISSN - 1029-8479

DOI - 10.1088/1126-6708/2006/01/051

Subject(s) - decoupling (probability) , loop (graph theory) , gluon , higgs boson , physics , quantum chromodynamics , coupling (piping) , particle physics , coupling constant , quantum electrodynamics , mathematics , engineering , control engineering , mechanical engineering , combinatorics

We compute the matching relation for the strong coupling constant within theframework of QCD up to four-loop order. This allows a consistent five-looprunning (once the $\beta$ function is available to this order) taking intoaccount threshold effects. As a side product we obtain the effective couplingof a Higgs boson to gluons with five-loop accuracy.Comment: 11 page

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