Renormalization of beta decay at three loops and beyond
| Autor: | Borah, Kaushik, Hill, Richard J., Plestid, Ryan |
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| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | Phys. Rev. D 109, 113007 (2024) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevD.109.113007 |
| Popis: | The anomalous dimension for heavy-heavy-light effective theory operators describing nuclear beta decay is computed through three-loop order in the static limit. The result at order $Z^2\alpha^3$ corrects a previous result in the literature. An all-orders symmetry is shown to relate the anomalous dimensions at leading and subleading powers of $Z$ at a given order of $\alpha$. The first unknown coefficient for the anomalous dimension now appears at $O(Z^2\alpha^4)$. Comment: Matches journal version. Small typos fixed |
| Databáze: | arXiv |
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