Common origin of the strong CP and CKM phases in string compactifications

Abstract

We explore the scenario where both the strong CP and Cabbibo-Kobayashi-Maskawa (CKM) phases are determined by the same axion field. Such a scenario is naturally realized in string compactifications. We find that there exists parameter region to realize the tiny strong CP phase and observed CKM phase in magnetized D-brane models.

12 pages, 3 figures

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• An Improved Experimental Limit on the Electric Dipole Moment of the Neutron
• Four-dimensional String Compactifications with D-Branes, Orientifolds and Fluxes
• Updated Values of Running Quark and Lepton Masses
• Three generation magnetized orbifold models
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Cited by in corpus (4)

• Landscape of Modular Symmetric Flavor Models
• Challenge for spontaneous CP violation in Type IIB orientifolds with fluxes
• Modular invariance and the QCD angle
• Finite modular axion and radiative moduli stabilization