The Strong CP Problem and Discrete Symmetries

Abstract

We discuss a possible solution to the strong CP problem which is based on spontaneous CP violation and discrete symmetries. At the same time we predict in a simple way the almost right-angled quark unitarity triangle angle ($\alpha \simeq 90^{\circ }$) by making the entries of the quark mass matrices either real or imaginary. To prove the viability of our strategy we present a toy flavour model for the quark sector.

10 pages, 1 figure, contribution to the International Conference on Massive Neutrinos, Singapore, 9 - 13 February 2015

References in corpus (3)

• Neutrino Mass and Mixing with Discrete Symmetry
• A flavour GUT model with theta_13^PMNS = theta_C / sqrt(2)
• Solving the Strong CP Problem with Discrete Symmetries and the Right Unitarity Triangle

Cited by in corpus (1)

• An $S_4\times SU(5)$ SUSY GUT of flavour in 6d