Dynamics behind the quark mass hierarchy

Abstract

We introduce a new class of models describing the quark mass hierarchy. In this class, the dynamics primarily responsible for electroweak symmetry breaking (EWSB) leads to the mass spectrum of quarks with no (or weak) isospin violation. Moreover, the values of these masses are of the order of the observed masses of the down-type quarks. Then, strong (although subcritical) horizontal diagonal interactions for the $t$ quark plus horizontal flavor-changing neutral interactions between different families lead (with no fine tuning) to a realistic quark mass spectrum. In this scenario, many composite Higgs bosons occur. A concrete model with the dynamical EWSB with the fourth family is described in detail.

11 pages, 3 figures, v2: title shorten, references and 1 figure added, text essentially extended, PRD version

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Cited by in corpus (13)

• Constraints on Mass Spectrum of Fourth Generation Fermions and Higgs Bosons
• Dynamical electroweak symmetry breaking with superheavy quarks and 2+1 composite Higgs model
• New Strongly Coupled Sector at the Tevatron and the LHC
• A Domino Theory of Flavor
• Generational Structure of Models with Dynamical Symmetry Breaking
• The Lepton Sector of a Fourth Generation
• Split SUSY Radiates Flavor
• Enhanced diphoton Higgs decay rate and isospin symmetric Higgs boson
• Strong dynamics behind the formation of the $125$ GeV Higgs boson
• Higgs Boson Yukawa Form Factors from Supersymmetric Radiative Fermion Masses
• A note on the coupling of the techni-dilaton to the weak bosons
• Spontaneous SU(2) symmetry violation in the $SU(2{)}_L\times SU(2{)}_R\times SU(4)$ electroweak model
• Higgs Mass Constraints on a Fourth Family: Upper and Lower Limits on CKM Mixing