Symmetry Breaking and Generational Mixing in Topcolor--Assisted
Technicolor
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by
Kenneth Lane
1996
Abstract
Topcolor--assisted technicolor provides a dynamical explanation for
electroweak and flavor symmetry breaking and for the large mass of the top
quark without unnatural fine tuning. A major challenge is to generate the
observed mixing between heavy and light generations while breaking the strong
topcolor interactions near 1 . I argue that these phenomena, as well as
electroweak symmetry breaking, are intimately connected and I present a
scenario for them based on nontrivial patterns of technifermion condensation. I
also exhibit a class of models realizing this scenario. This picture leads to a
rich phenomenology, especially in hadron and lepton collider experiments in the
few hundred GeV to few TeV region and in precision electroweak tests at the
Z^0, atomic parity violation, and polarized Møller scattering.
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