Work

Renormalization group running triggered tri-resonant leptogenesis within neutrino flavor-symmetry models

Year: 2025

Type: article

Abstract: In this paper, we have studied the consequences of some representative neutrino flavor-symmetry models for tri-resonant leptogenesis (which is realized by having three nearly degenerate right-handed neutrinos). To be specific, we have considered a neutrino flavor-symmetry model realizing the TM1 mixing and modular $$\textrm{A}_4$$ A 4 , $$\textrm{S}_4$$ S 4 and $$\textrm{A}_5$$ A 5 symmetry models that have a right-handed neutrino mass matrix $$M_{\textrm{R}}$$ M R as shown in Eq. (6) which gives three exactly degenerate right-handed neutrino masses and consequently prohibits the leptogenesis mechanism to work successfully. For these models, we study the scenario that the desired right-handed neutrino mass splittings for leptogenesis to work are generated from the renormalization-group running effects. In such a scenario, we explore the parameter space that allows for the reproduction of the observed baryon-antibaryon asymmetry of the Universe.

Source: The European Physical Journal C

DOI: 10.1140/epjc/s10052-025-15137-2

Authors: Zhi-Cheng Liu, Zhen-hua Zhao

Institutions: Anyang Institute of Technology, Liaoning Normal University

Language: English

Topic: Particle physics theoretical and experimental studies

Subfield: Nuclear and High Energy Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Natural Science Foundation of China, Anyang Institute of Technology, Liaoning Revitalization Talents Program

Awards: G1953370800, G6221555079