Geng, Chaqiang2017-03-102017-03-101987http://hdl.handle.net/10919/76097We review the various constraints on composite models of quarks and leptons. Some dynamical mechanisms for chiral symmetry breaking in chiral preon models are discussed. We have constructed several "realistic candidate" chiral preon models satisfying complementarity between the Higgs and confining phases. The models predict three to four generations of ordinary quarks and leptons.vii, 87 leavesapplication/pdfen-USIn CopyrightLD5655.V856 1987.G463QuarksLeptons (Nuclear physics)Dissertation