Matching for FCNC effects in the flavour-symmetric SMEFT

Abstract

We calculate the complete tree and one-loop matching of the dimension 6 Standard Model Effective Field Theory (SMEFT) with unbroken $U(3{)}^5$ flavour symmetry to the operators of the Weak Effective Theory (WET) which are responsible for flavour changing neutral current effects among down-type quarks. We also explicitly calculate the effects of SMEFT corrections to input observables on the WET Wilson coefficients, a necessary step on the way to a well-defined, complete prediction. These results will enable high-precision flavour data to be incorporated into global fits of the SMEFT at high energies, where the flavour symmetry assumption is widespread.

25 pages, 9 figures, including appendix. v2: added references, matches published version

References in corpus (7)

• B-physics anomalies: a guide to combined explanations
• $SU(2)\times U(1)$ gauge invariance and the shape of new physics in rare $B$ decays
• Model-independent precision constraints on dimension-6 operators
• Higgs production in association with a top-antitop pair in the Standard Model Effective Field Theory at NLO in QCD
• QCD radiative corrections for $h\to b\bar{b}$ in the Standard Model Dimension-6 EFT
• Probing anomalous $t\bar{t}Z$ interactions with rare meson decays
• Interplay of t --> b W Decay and B_q Meson Mixing in Minimal Flavor Violating Models

Cited by in corpus (13)

• Top, Higgs, Diboson and Electroweak Fit to the Standard Model Effective Field Theory
• DsixTools 2.0: The Effective Field Theory Toolkit
• Correlating $h\to {\mu }^{+}{\mu }^{-}$ to the Anomalous Magnetic Moment of the Muon via Leptoquarks
• Top and Beauty synergies in SMEFT-fits at present and future colliders
• The Flavor of UV Physics
• More Synergies from Beauty, Top, $Z$ and Drell-Yan Measurements in SMEFT
• Building blocks of the flavourful SMEFT RG
• Computing Tools for Effective Field Theories
• NLO QCD Renormalization Group Evolution for Non-Leptonic $\Delta F=2$ Transitions in the SMEFT
• Froggatt-Nielsen Meets the SMEFT
• Revisiting electroweak radiative corrections to $b\to s\ell \ell$ in SMEFT
• Effective field theory in light of relative entropy
• Multi-Component Dark Matter from Minimal Flavor Violation