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Automatic Nelson-Barr solutions to the strong CP puzzle

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arxiv 2302.06620 v3 pith:UA3O4VGJ submitted 2023-02-13 hep-ph

Automatic Nelson-Barr solutions to the strong CP puzzle

classification hep-ph
keywords modelotimesstrongbrieflydiscussexpressionsgaugegroup
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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We discuss a simple model, based on the gauge group ${\rm SU}(3)_C\otimes {\rm SU}(2)_L \otimes \text{U}(1)_Y\otimes \text{U}(1)_R$, where the Nelson-Barr solution to the strong CP problem is implemented. This model automatically provides a high quality solution to the strong CP puzzle. Weak CP violation in the lepton sector arises in the same fashion as in the quark sector. We derive explicit expressions for the flavor changing couplings of the electroweak and Higgs bosons. These expressions are more general than the particular model considered. Constraints from finite naturalness are briefly discussed. We briefly also discuss related models based on the gauge group B-L.

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Cited by 1 Pith paper

Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Flavor Hierarchies the Right Way

    hep-ph 2026-07 conditional novelty 5.5

    Universal seesaw under a chiral U(1)_R forbids ordinary Yukawas except the top, generates charged-fermion and neutrino hierarchies, and realizes tree-level Nelson-Barr protection of strong CP.