7 papers
Rescuing flavor-symmetry-forbidden leptogenesis within the left-right symmetric framework
Yan Shao, Zhen-hua Zhao
While the type-I seesaw model provides a unified framework for explaining the origin of neutrino masses and the baryon asymmetry of the Universe, flavor symmetries offer an attract…
Leptogenesis in the littlest inverse seesaw model
Yan Shao, Zhen-hua Zhao, Yi-Fei Duan
The littlest inverse seesaw (LIS) model represents the first low-scale seesaw framework to successfully account for all six physical observables of the neutrino sector with merely…
Flavon assisted low scale leptogenesis
Yan Shao, Zhen-hua Zhao
Low-scale leptogenesis scenarios, such as the resonant or ARS leptogenesis, typically require a highly degenerate mass spectrum of right-handed neutrinos (RHNs). This requirement c…
Neutrino mass anarchy and leptogenesis
Qi An, Yan Shao, Zhen-hua Zhao
In this paper, we investigate leptogenesis under the neutrino mass anarchy hypothesis in both type-I and type-II seesaw models. We first revisit the corresponding study in the type…
Rescuing leptogenesis in inverse seesaw models with the help of non-Abelian flavor symmetries
Yan Shao, Zhen-hua Zhao
The inverse seesaw (ISS) model provides an attractive framework that can naturally explain the smallness of neutrino masses while accommodating some sterile neutrinos potentially a…
Linear seesaw leptogenesis before/after electroweak symmetry breaking
Yan Shao, Zhen-hua Zhao
The linear seesaw (LSS) model provides a natural framework for generating small neutrino masses at low energy scales, thereby offering promising testability prospects. However, in…