Solutions to the strong CP problem in a world with gravity

Details Solutions to the strong CP problem in a world with gravity Solutions to the strong CP problem in a world with gravity

1992-03-09

arxiv.org/abs/hep-ph/9203206v1

Phys.Lett.B282:132-136,1992

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages

Scientific paper

10.1016/0370-2693(92)90491-L

We examine the sensitivity of several solutions of the strong-CP problem to
violations of global symmetries by Planck scale physics. We find that the
Peccei-Quinn solution is extremely sensitive to U(1)_PQ violating operators of
dimension less than 10. We construct models in which the PQ symmetry is
protected by gauge symmetries to the requisite level.

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