2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/53193Although old, this may be of interest. In particular, I have had inquiries concerning the renormalization group calculations in Sec. 6.4. This is a Latex transcription. A scanned version of the original typed manuscript is available at http://phys.columbia.edu/~ejw/thesis.pdf .Ph.D. thesis, 82 pages, 21 figures. Originally submitted in April 1973, and defended on May 11, 1973High Energy Physics - TheoryHigh Energy Physics - Phenomenologytext