A Complete Solution to the Strong CP Problem: a SUSY Extension of the Nelson-Barr Model

Abstract

We present a supersymmetric solution to the strong CP problem based on spontaneous CP violation which simultaneously addresses the affects coming from supersymmetry breaking. The generated CP violating phase is communicated to the quark sector by interacting with a heavy quark a la Nelson-Barr. The Majorana mass of the right handed neutrinos is generated by interactions with the CP violating sector and so does not conserve CP. This gives the neutrino sector a non-trivial CP violating phase which can then generate the baryon asymmetry of the universe through leptogeneis. The problematic phase in the supersymmetry breaking parameters are suppressed by appealing to a particular gauge mediation model which naturally suppresses the phases of the tree-level gluino mass. This suppression plus the fact that in gauge mediation all loop generated flavor and CP violation is of the minimal flavor violation variety allows for a complete and consistent solution to the strong CP problem.

6 pages, 1 figure, 1 table

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• Splitting Mass Spectra and Muon g-2 in Higgs-Anomaly Mediation
• Low-energy Supersymmetry Breaking Without the Gravitino Problem
• A CP-safe solution of the mu/ Bmu problem of gauge mediation
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Cited by in corpus (13)

• Vector-like Singlet Quarks: a Roadmap
• The CKM Phase and $\bar{\theta }$ in Nelson-Barr Models
• A Natural Model of Spontaneous CP Violation
• Baryon Asymmetric Universe from Spontaneous CP Violation
• Flavor constraints for a Vector-like quark of Nelson-Barr type
• Leptonic CP violation from a vector-like lepton
• Revisiting the Minimal Nelson-Barr Model
• Variant Nelson-Barr Mechanism with Minimal Flavor Violation
• Flavor- and CP-safe explanation of $g_{\mu }-2$ anomaly
• Leptonic CP violation from the seesaw
• Spontaneous CP violation, sterile neutrino dark matter, and leptogenesis
• Effective description of Nelson-Barr models and the theta parameter
• Exploring the Landscape of Spontaneous CP Violation in Supersymmetric Theories