Gauge Coupling β Functions to Four-Loop Order in the Standard Model

Joshua Davies, Florian Herren, Colin Poole, Matthias Steinhauser, Anders Eller Thomsen

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Abstrakt

We compute the β functions of the three standard model gauge couplings to four-loop order in the modified minimal subtraction scheme. At this order a proper definition of γ5 in D=4-2ϵ space-time dimensions is required; however, in our calculation we determine the γ5-dependent terms by exploiting relations with β function coefficients at lower loop orders.

OriginalsprogEngelsk
Artikelnummer071803
TidsskriftPhysical Review Letters
Vol/bind124
Udgave nummer7
Antal sider6
ISSN0031-9007
DOI
StatusUdgivet - 2020

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