Leptogenesis with Friedberg-Lee Symmetry

TL;DR

This paper explores how Friedberg-Lee symmetry in the neutrino sector can produce tribimaximal mixing and contribute to understanding baryon asymmetry via leptogenesis, linking CP phases to cosmological observations.

Contribution

It demonstrates that a specific Friedberg-Lee symmetry leads to tribimaximal mixing and connects leptogenesis with CP phases in the MNS matrix.

Findings

Friedberg-Lee symmetry yields tribimaximal mixing pattern.

A relation between baryon asymmetry and CP phases is established.

Leptogenesis mechanism is applied within the Friedberg-Lee symmetric framework.

Abstract

We consider the $\mu-\tau$ symmetric Friedberg-Lee (FL) symmetry for the neutrino sector and show that a specific FL translation leads to the tribimaximal mixing pattern of the Maki-Nakagawa-Sakata (MNS) matrix. We also apply the symmetry to the type-I seesaw framework and address the baryon asymmetry of the universe through the leptogenesis mechanism. We try to establish a relation between the net baryon asymmetry and CP phases included in the MNS matrix.