A complete study of RGE induced leptogenesis in flavor symmetry scenarios

TL;DR

This paper investigates how renormalization group evolution can enable leptogenesis in flavor symmetry models where it is otherwise suppressed, providing new insights into neutrino physics and CP violation.

Contribution

It offers a comprehensive analysis of RGE effects on leptogenesis in specific flavor symmetry scenarios, addressing a gap in previous research.

Findings

RGE effects can induce successful leptogenesis in previously forbidden scenarios

Provides a detailed framework for analyzing flavor symmetry and CP violation

Complements earlier studies with new theoretical insights

Abstract

In the literature, motivated by the observed peculiar neutrino mixing pattern and a preliminary experimental hint for maximal Dirac CP phase (i.e., $\delta \sim 3\pi/2$), a lot of flavor and CP symmetries have been proposed to help us understand and explain these experimental results. However, for some flavor-symmetry scenarios (see section~3.1), the leptogenesis mechanism is prohibited to work as usual. To tackle this problem, in this paper we have made an exhausitive study on the possibility that the renormalization group evolution effect may induce a successful leptogenesis for these particular scenarios. Our study provides some complementarities to the previous related studies in Refs. [26, 27, 28] (see section~3.2).