Anomalous U(1), holomorphy, supersymmetry breaking and dilaton stabilization

Details Anomalous U(1), holomorphy, supersymmetry breaking and dilaton stabilization Anomalous U(1), holomorphy, supersymmetry breaking and dilaton stabilization

1998-12-11

arxiv.org/abs/hep-ph/9812338v4

Phys.Rev. D59 (1999) 115008

Physics

High Energy Physics

High Energy Physics - Phenomenology

14 pages, no figures; wording of the abstract is changed

Scientific paper

10.1103/PhysRevD.59.115008

We argue that in certain models with family symmetries the implementation of the alignment mechanism for the supression of the flavor changing neutral currents requires mass matrices with holomorphic zeros in the down quark sector. Holomorphic zeros typically open flat directions that potentially spoil the uniqueness of the supersymmetric vacuum. We then present an anomalous U(1) model without holomorphic zeros in the quark sector that can reproduce the fermion mass hierarchies, provided that $\tan{\beta}$ is of order one. To avoid undesired flavor changing neutral currents we propose a supersymmetry breaking mechanism and a dilaton stabilization scenario that result in degenerate squarks at $M\sim M_{GUT}$ and a calculable low energy spectrum. We present the numerical predictions of this model for the Higgs mass for different values of $M$ and $\tan{\beta}$.

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