Leptogenesis from the asymmetric texture

We investigate nonresonant thermal leptogenesis in the context of the SU(5) x T-13 asymmetric texture, where both Dirac and Majorana CP violation arise from a single phase in the tribimaximal seesaw mixing matrix. We show that the baryon asymmetry of the universe can be explained in this model only when flavor effects are considered for right-handed neutrino masses of O(10(11)-10(12)) GeV. The sign of the baryon asymmetry also determines the sign of the previously predicted Dirac CP phase vertical bar delta(CP)vertical bar = 1.32 pi, consistent with the latest global fit delta(PDG)(CP) = 1.37 +/- 0.17 pi.

Automated summary

The study shows that the baryon asymmetry of the universe can be explained only when considering right-handed neutrino masses of O(10(11)-10(12)) GeV, with the sign of the baryon asymmetry related to the sign of the previously predicted Dirac CP phase.