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arXiv · 1811.04961

SMEFT top-quark effects on $ΔF=2$ observables

Motoi Endo·Teppei Kitahara·Daiki Ueda
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Abstract

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

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Motoi Endo, Teppei Kitahara, Daiki Ueda. 2019-07-24. SMEFT top-quark effects on $ΔF=2$ observables. https://doi.org/10.1007/jhep07(2019)182

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