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URN: urn:nbn:de:swb:90-554731

Top-Yukawa effects on the β-function of the strong coupling in the SM at four-loop level

Zoller, M. F.

Abstract (englisch):
We present analytical results for the QCD β-function extended to the gaugeless limit of the unbroken phase of the Standard Model at four-loop level. Apart from the strong coupling itself we include the top-Yukawa contribution and the Higgs self-coupling. We observe a numerically small non-naive γ₅ contribution at order y t 4 g s 4 , a feature not encountered in lower loop orders. We discuss the treatment of γ₅ which is more involved than in previous calculations at three-loop level

Zugehörige Institution(en) am KIT Institut für Theoretische Teilchenphysik (TTP)
Publikationstyp Zeitschriftenaufsatz
Jahr 2016
Sprache Englisch
Identifikator ISSN: 1029-8479
KITopen ID: 1000055473
Erschienen in Journal of High Energy Physics
Heft 2
Seiten Article 095
Bemerkung zur Veröffentlichung Gefördert durch SCOAP3
Schlagworte Renormalization Group; Standard Model
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