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arXiv · 1412.3805

Spontaneous CP violation and the strong CP problem

Luca Vecchi
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Abstract

We derive sufficient conditions that guarantee a robust solution of the strong CP problem in theories with spontaneous CP violation, and introduce a class of models satisfying these requirements. In the simplest scenarios the dominant contribution to the topological angle arises at 3-loop order in the Yukawa couplings. A variety of realizations are possible on a warped extra dimension, which can simultaneously address the Planck-TeV hierarchy. Experimental signatures of this approach to the strong CP problem include flavor violation and vector-like partners of the top or bottom quarks.

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Luca Vecchi. 2014-12-11. Spontaneous CP violation and the strong CP problem. https://arxiv.org/abs/1412.3805

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