Kaushik Borah

Jun 26, 2024 | link.aps.org | Kaushik Borah |Richard Hill |Ryan Plestid

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 Z2α3 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 α. The first unknown coefficient for the anomalous dimension now appears at O(Z2α4).

May 15, 2023 | link.aps.org | Oleksandr Tomalak |Los Alamos |Richard Hill |Kaushik Borah

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