Partial quark-lepton universality and neutrino CP violation

Abstract

We study a model with partial quark-lepton universality that can naturally arise in grand unified theories. We find that constraints on the model can be reduced to a single condition on the Dirac CP phase $\delta$ in the neutrino sector. Using our current knowledge of the CKM and PMNS mixing matrices, we predict $-32.4^{\circ }<\delta <32.0^{\circ }$ at $2\sigma$.

Comments: 8 pages, 1 figure. Version to appear in the special issue, "Neutrino Masses and Oscillations 2015", of Advances in High Energy Physics