Studies in the Sp(6) times U(1) extension of the electroweak model
Abstract
The Sp(6) $\times$ U(1) extension of the electroweak model was proposed to address the generation problem of particle physics. Contrary to traditional approaches in building models to tackle the generation problem, this model has the unique feature of unifying "horizontal" (or inter-generational) and electroweak interactions without the introduction of additional fermions. Since its proposal in 1984 (12), numerous phenomenological studies have been made (7), (29). In this thesis, further studies of the Sp(6) $\times$ U(1) model (Sp(6) model) are made. A phenomenological study of the tree-level contributions to BB mixing due to the extra $Z\sp\prime$ of the Sp(6) model shows that the standard model contribution can be enhanced. A softly broken (minimal) supersymmetric Sp(6) model is proposed by writing down a workable lagrangian. Using this proposed model, a further calculation is made on its contribution to BB mixing. It is shows that flavor changing neutral currents in this supersymmetric theory can be further suppressed by considering the contributions of the $Z\sp\prime$-inos.
Degree
Ph.D.
Advisors
Kuo, Purdue University.
Subject Area
Particle physics
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