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Four-loop strong coupling beta-function in the Standard Model
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DOI：10.1016/j.physletb.2016.09.007.png)
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Abstract
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In this letter we present our results for the four-loop beta-function of the strong coupling in the Standard Model of fundamental interactions. The expression is obtained from gluon self-energy diagrams in the background field gauge without application of special infra-red rearrangement tricks. We take top-Yukawa and self-Higgs interactions into account, but neglect electroweak gauge couplings. Ambiguities due to gamma 5 treatment are discussed and a particular reading prescription for odd Dirac traces is advocated. (C) 2016 The Authors. Published by Elsevier B.V.
Keywords:
Standard Model
High-order corrections
Renormalization group
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