Work

Testable flavored TeV-scale resonant leptogenesis with MeV-GeV dark matter in a neutrinophilic two-Higgs-doublet model

Year: 2025

Type: article

Abstract: We explore flavored resonant leptogenesis embedded in a neutrinophilic two-Higgs-doublet model. Successful leptogenesis is achieved by the very mildly degenerate two heavier right-handed neutrinos (RHNs) N 2 and N 3 with a level of only Δ M 32 / M 2 ∼ O ( 0.1 % – 1 % ) . The lightest RHN, with a MeV–GeV mass, lies below the sphaleron freeze-out temperature and is stable, serving as a dark matter candidate. The model enables TeV-scale leptogenesis while avoiding the extreme mass degeneracy typically plaguing conventional resonant leptogenesis. Baryon asymmetry, neutrino masses, and potentially even dark matter relic density can be addressed within a unified, experimentally testable framework.

Source: Physical review. D/Physical review. D.

DOI: 10.1103/b5sk-5f3d

Authors: Peisi Huang, Kairui Zhang

Institution: University of Oklahoma

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: hybrid

Funder: National Science Foundation

Awards: Unlocking Cosmic Mysteries Through Theoretical Particle Physics Studies, Probing New Physics at the Large Hadron Collider and Gravitational Wave Interferometers