English

Dirac Masses and Mixings in the (geo)SM(EFT) and Beyond

High Energy Physics - Phenomenology 2021-11-24 v2

Abstract

We report a set of exact formulae for computing Dirac masses, mixings, and CP-violation parameter(s) from 3×\times3 Yukawa matrices YY valid when YYUYYUY Y^\dagger \rightarrow U^\dagger \,Y Y^\dagger \, U under global U(3)QLU(3)_{Q_L} flavour symmetry transformations UU. The results apply to the Standard Model Effective Field Theory (SMEFT) and its `geometric' realization (geoSMEFT). We thereby complete, in the Dirac flavour sector, the catalogue of geoSMEFT parameters derived at all orders in the 2HH/Λ\sqrt{2 \langle H^\dagger H \rangle} / \Lambda expansion. The formalism is basis-independent, and can be applied to models with decoupled ultraviolet flavour dynamics, as well as to models whose infrared dynamics are not minimally flavour violating. We highlight these points with explicit examples and, as a further demonstration of the formalism's utility, we derive expressions for the renormalization group flow of quark masses, mixings, and CP-violation at all mass dimension and perturbative loop orders in the (geo)SM(EFT) and beyond.

Keywords

Cite

@article{arxiv.2107.03951,
  title  = {Dirac Masses and Mixings in the (geo)SM(EFT) and Beyond},
  author = {Jim Talbert and Michael Trott},
  journal= {arXiv preprint arXiv:2107.03951},
  year   = {2021}
}

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