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- W3175151504 abstract "Three-loop counterterms for the Standard Model (SM) revealed that the matrix of anomalous dimensions ($ensuremath{gamma}$) of quarks is divergent in the $densuremath{rightarrow}4$ limit unless a carefully chosen non-Hermitian square-root of the $Z$ matrix is used in the textbook formula for $ensuremath{gamma}$. Here, an alternative prescription is given, which expresses $ensuremath{gamma}$ and $ensuremath{beta}$ functions directly in terms of counterterms (instead of $sqrt{Z}$ and conventional `bare couplings') and produces finite results. In the SM, this prescription reproduces results obtained previously by adjusting $sqrt{Z}$." @default.
- W3175151504 created "2021-07-05" @default.
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- W3175151504 date "2021-09-28" @default.
- W3175151504 modified "2023-10-01" @default.
- W3175151504 title "Divergences in anomalous dimension matrices of quarks at three loops: Explanation and simple solution" @default.
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- W3175151504 doi "https://doi.org/10.1103/physrevd.104.056029" @default.
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