Weyl Consistency Conditions and γ5

C. Poole*, A. E. Thomsen

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Abstrakt

The treatment of γ5 in dimensional regularization leads to ambiguities in field-theoretic calculations, of which one example is the coefficient of a particular term in the four-loop gauge beta functions of the standard model. Using Weyl consistency conditions, we present a scheme-independent relation between the coefficient of this term and a corresponding term in the three-loop Yukawa beta functions, where a semi-naïve treatment of γ5 is sufficient, thereby fixing this ambiguity. We briefly outline an argument by which the same method fixes similar ambiguities at higher orders.

OriginalsprogEngelsk
Artikelnummer041602
TidsskriftPhysical Review Letters
Vol/bind123
Antal sider6
ISSN0031-9007
DOI
StatusUdgivet - 26. jul. 2019

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