A Simple Dirac Prescription for Two-Loop Anomalous Dimension Matrices
| Autor: | Aebischer, Jason, Pesut, Marko, Polonsky, Zachary |
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| Rok vydání: | 2024 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| Popis: | 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 $\gamma_5$ 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 $|\Delta F| = 1$ and $|\Delta F| = 2$ transitions. Comment: 31 pages, 3 figures, explanations and appendix added, matches published version |
| Databáze: | arXiv |
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