Creating the Fermion Mass Hierarchies with Multiple Higgs Bosons

Abstract

After the Higgs boson discovery, it is established that the Higgs mechanism explains electroweak symmetry breaking and generates the masses of all particles in the Standard Model, with the possible exception of neutrino masses. The hierarchies among fermion masses and mixing angles remain however unexplained. We propose a new class of two Higgs doublet models in which a flavor symmetry broken at the electroweak scale addresses this problem. The models are strongly constrained by electroweak precision tests and the fact that they produce modifications to Higgs couplings and flavor changing neutral currents; they are also constrained by collider searches for extra scalar bosons. The surviving models are very predictive, implying unavoidable new physics signals at the CERN Large Hadron Collider, e.g. extra Higgs Bosons with masses $M<700$ GeV.

5 pages, 2 figures

References in corpus (8)

• Measurements of the Higgs boson production and decay rates and constraints on its couplings from a combined ATLAS and CMS analysis of the LHC $pp$ collision data at $\sqrt{s}=$ 7 and 8 TeV
• The global electroweak fit at NNLO and prospects for the LHC and ILC
• Updated NNLO QCD predictions for the weak radiative B-meson decays
• Search for neutral MSSM Higgs bosons decaying to a pair of tau leptons in pp collisions
• Higgs-dependent Yukawa couplings
• Search for a CP-odd Higgs boson decaying to $Zh$ in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Search for a high-mass Higgs boson decaying to a $W$ boson pair in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector
• Search for a pseudoscalar boson decaying into a Z boson and the 125 GeV Higgs boson in llbb final states

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• Flavorful Two Higgs Doublet Models with a Twist
• Solving the fermionic mass hierarchy of the standard model
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• Thermal dark matter via the flavon portal
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• Probing Flavor Non-Universal Theories Through Higgs Physics at the LHC and Future Colliders
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• Constraining the Higgs couplings to up and down quarks using production kinematics at the CERN Large Hadron Collider
• Composite Flavon-Higgs Models
• The problem of flavour
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