A simple dirac prescription for two-loop anomalous dimension matrices.

Eur Phys J C Part Fields

Physik-Institut, Universität Zürich, 8057 Zurich, Switzerland.

Published: July 2024

A novel method to treat effects from evanescent operators in next-to-leading order (NLO) computations is introduced. The approach allows, besides further simplifications, to discard evanescent-to-physical mixing contributions in NLO calculations. The method is independent of the treatments of and can therefore be combined with different renormalization schemes. We illustrate the utility of this result by reproducing literature results of two-loop anomalous dimension matrices for both and transitions.

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11283414PMC
http://dx.doi.org/10.1140/epjc/s10052-024-13101-0DOI Listing

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