1994/04/04 by Alon E. Faraggi, Faraggi, Alon E.
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #High Energy Physics - Theory (hep-th) #hep-ph #hep-th
paper · pdf · doi:10.48550/arxiv.hep-ph/9404210
IASSNS--HEP--94/21, 11 pages
arxiv created 1994/04/04 · arxiv updated 2009/11/30
I outline a program to derive the Standard Model directly from superstring theory. I present a class of three generation superstring standard--like models in the free fermionic formulation. I discuss some phenomenological properties of these models. In particular these models suggest an explanation for the top quark mass hierarchy. A numerical estimate yielded mt∼175-180~GeV. The general texture of fermion mass matrices was obtained from analysis of nonrenormalizable terms up to order N=8.I argue that the realistic features of these models are due to the underlying Z2× Z2 orbifold, with standard embedding, at the free fermionic point in toroidal compactification space.