SMEFT top-quark effects on $\Delta F=2$ observables

Abstract

We investigate model independent top-quark corrections to $\Delta F=2$ processes for the down-type quarks within the framework of the Standard Model Effective Field Theory. Dimension-six $\Delta F=1$ operators contribute to them through renormalization group evolutions and matching conditions. We provide a complete one-loop matching formula from the top quarks for $\Delta F=2$ transitions. We also demonstrate these corrections on $\Delta M_{B_s}$ in the left-right symmetric model, which are compared with the conventional calculation.

arXiv comment30 pages, 5 figures; version published in JHEP

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• Resolving the Flavor Structure in the MFV-SMEFT
• NLO QCD Renormalization Group Evolution for Non-Leptonic $\Delta F=2$ Transitions in the SMEFT
• Flavour Violating Effects of Yukawa Running in SMEFT
• Nuclear EDM from SMEFT flavor-changing operator