The Case for a Standard Model with Anomalous U(1)

Details The Case for a Standard Model with Anomalous U(1) The Case for a Standard Model with Anomalous U(1)

1998-08-31

arxiv.org/abs/hep-ph/9808488v1

Invited Talk at Orbis Scientiae, Miami, Dec 1977

Physics

High Energy Physics

High Energy Physics - Phenomenology

16 pages, uses article.sty

Scientific paper

A gauged phase symmetry with its anomalies cancelled by a Green-Schwarz mechanism, broken at a large scale by an induced Fayet-Iliopoulos term, is a generic feature of a large class of superstring theories. It induces many desirable phenomenological features: Yukawa coupling hierarchy, the emergence of a small Cabibbo-like expansion parameter, relating the Weinberg angle to $b-\tau$ unification, and the linking of R-parity conservation to neutrino masses. Some are discussed in the context of a three-family model which reproduces all quark and lepton mass hierarchies as well as the solar and atmospheric neutrino oscillations.

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