Stabilizing the axion and a natural solution to the mu problem of supersymmetry

Details Stabilizing the axion and a natural solution to the mu problem of supersymmetry Stabilizing the axion and a natural solution to the mu problem of supersymmetry

2004-02-05

arxiv.org/abs/hep-ph/0402052v2

Physics

High Energy Physics

High Energy Physics - Phenomenology

REVTex4, 4 pages. Talk presented on SUSY 2003. To appear in the Proceedings of SUSY 2003, held at the University of Arizona, T

Scientific paper

The axion solution to the strong CP problem makes use of a global Peccei-Quinn (PQ) U(1) symmetry which is susceptible to violations from quantum gravitational effects. We show explicitly how discrete gauge symmetries can protect the axion from such violations. PQ symmetry emerges as an accidental global symmetry from discrete gauge symmetries which are subgroups of the anomalous U(1) of string origin. We also show how the Dine-Fischler-Srednicki-Zhitnitsky (DFSZ) axion model provides a natural solution to mu problem of supersymmetry as mu ~ M_{SUSY} ~ M^2_{PQ}/M_{Pl}.

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