Top-Bottom Splitting in Technicolor with Composite Scalars

Abstract

We present a model of dynamical electroweak symmetry breaking in which the splitting between the top and bottom quark masses arises naturally. The W and Z masses are produced by a minimal technicolor sector, the top quark mass is given by the exchange of a weak-doublet technicolored scalar, and the other quark and lepton masses are induced by the exchange of a weak-doublet technicolor-singlet scalar. We show that, in the presence of the latter scalar, the vacuum alignment is correct even in the case of SU(2) technicolor. The fit of this model to the electroweak data gives an acceptable agreement (chi-squared = 28 for 20 degrees of freedom). The mass hierarchy between the standard fermions other than top can also be explained in terms of the hierarchy of squared-masses of some additional scalars. We discuss various possibilities for the compositeness of the scalars introduced here.

21 pages

References in corpus (6)

• The Hierarchy Problem and New Dimensions at a Millimeter
• Electroweak Symmetry Breaking via Top Condensation Seesaw
• A New Model of Topcolor-Assisted Technicolor
• A Heavy Top Quark From Flavor-Universal Colorons
• Negative contributions to S in an effective field theory
• Mirror Families in Electro-weak Symmetry Breaking

Cited by in corpus (10)

• Strong Dynamics and Electroweak Symmetry Breaking
• New Topflavor Models with Seesaw Mechanism
• Fundamental partial compositeness
• A UV complete partially composite-pNGB Higgs
• Minimal Super Technicolor
• Current Bounds on Technicolor with Scalars
• Torsion instead of Technicolor
• Gauge theory of Lorentz group as a source of the dynamical electroweak symmetry breaking
• Consequences of a unified, anarchical model of fermion masses and mixings
• Techni-Chiral-Color