Sequential Flavour Symmetry Breaking

Abstract

The gauge sector of the Standard Model (SM) exhibits a flavour symmetry which allows for independent unitary transformations of the fermion multiplets. In the SM the flavour symmetry is broken by the Yukawa couplings to the Higgs boson, and the resulting fermion masses and mixing angles show a pronounced hierarchy. In this work we connect the observed hierarchy to a sequence of intermediate effective theories, where the flavour symmetries are broken in a step-wise fashion by vacuum expectation values of suitably constructed spurion fields. We identify the possible scenarios in the quark sector and discuss some implications of this approach.

22 pages latex, no figures

References in corpus (9)

• General Minimal Flavor Violation
• Fermion Masses and Mixings from Dihedral Flavor Symmetries with Preserved Subgroups
• Fermion masses and mixing in models with SO(10) x A_4 symmetry
• A Simple Flavor Protection for RS
• Large Top Mass and Non-Linear Representation of Flavour Symmetry
• Solving the flavour problem with hierarchical fermion wave functions
• Solving the SUSY Flavour and CP Problems with SU(3) Family Symmetry
• theta_C from the Dihedral Flavor Symmetries D_7 and D_14
• Neutrino-Mass Hierarchies and Non-linear Representation of Lepton-Flavour Symmetry

Cited by in corpus (41)

• Renormalization Group Evolution of the Standard Model Dimension Six Operators III: Gauge Coupling Dependence and Phenomenology
• The Standard Model as an Effective Field Theory
• Anatomy and Phenomenology of FCNC and CPV Effects in SUSY Theories
• Towards the Identification of New Physics through Quark Flavour Violating Processes
• Phenomenology of a Gauged SU(3)^3 Flavour Model
• On The Potential of Minimal Flavour Violation
• Dark matter within the minimal flavour violation ansatz
• The $Z$ decay width in the SMEFT: $y_t$ and $\lambda$ corrections at one loop
• The Minimal Flavour Violating Axion
• Flavour with a Light Dynamical "Higgs Particle"
• Aligned and Spontaneous Flavor Violation
• Flavor Symmetric Sectors and Collider Physics
• Naturally large Yukawa hierarchies
• Yukawa hierarchies from spontaneous breaking of the $\bma{SU(3)_L\times SU(3)_R}$ flavour symmetry?
• On the Potential of Leptonic Minimal Flavour Violation
• See-Saw Masses for Quarks and Leptons in SU(5)
• Gauging the Way to MFV
• The B -> Xs gamma Rate and CP Asymmetry within the Aligned Two-Higgs-Doublet Model
• Flavour violation in a supersymmetric T' model
• Leptonic Dynamical Yukawa Couplings
• Minimal Flavour Violation with Strong Higgs Dynamics
• Dynamical Minimal Flavour Violating Inverse Seesaw
• Revisiting Minimal Lepton Flavour Violation in the Light of Leptonic CP Violation
• Gauged Lepton Flavour
• On discrete Minimal Flavour Violation
• Quark masses, mixings, and CP violation from spontaneous breaking of flavor $SU(3{)}^3$
• Flavour Theory: 2009
• Higgs-flavon mixing and LHC phenomenology in a simplified model of broken flavor symmetry
• Dynamical flavor origin of ${\mathbb{Z}}_N$ symmetries
• Predictive Leptogenesis from Minimal Lepton Flavour Violation
• A New bound on CP Violation in the $\tau$ Lepton Yukawa Coupling and electroweak baryogenesis
• Covariant Description of Flavor Conversion in the LHC Era
• Gauged flavour symmetry for the light generations
• Covariant Description of Flavor Violation at the LHC
• Data Driven Flavour Model
• Neutrino and Charged Lepton Flavour Today
• Effective Theories for Flavour Physics beyond the Standard Model
• Renormalization Group Evolution of Flavour Invariants
• Quark Yukawa pattern from spontaneous breaking of flavour $SU(3{)}^3$
• Neutrino Masses and Mixings from Continuous Symmetries
• Higgs boson physics and broken flavor symmetry -- LHC phenomenology