Spurion-based EFTs are exactly equivalent to EFTs restricted to the residual symmetry preserved by a generic spurion vacuum expectation value, at all mass dimensions when all spurion powers are kept.
Grand Unification and the Principle of Minimal Flavor Violation
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Minimal Flavor Violation is an attractive approach to suppress unacceptably large flavor changing neutral currents from beyond the standard model physics at the TeV scale. It can be used in theories with low energy supersymmetry, multi Higgs doublet theories and other extensions of the minimal standard model. We show how minimal flavor violation can be implemented in Grand Unified theories.
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Most general EFTs from spurion analysis: Hilbert series and Minimal Lepton Flavor Violation
Spurion-based EFTs are exactly equivalent to EFTs restricted to the residual symmetry preserved by a generic spurion vacuum expectation value, at all mass dimensions when all spurion powers are kept.