Find in Library
Search millions of books, articles, and more
Indexed Open Access Databases
Neutrino mass and leptogenesis in a hybrid seesaw model with a spontaneously broken CP
oleh: Rohan Pramanick, Tirtha Sankar Ray, Avirup Shaw
| Format: | Article |
|---|---|
| Diterbitkan: | SpringerOpen 2023-06-01 |
Deskripsi
Abstract We introduce a novel hybrid framework combining type I and type II seesaw models for neutrino mass where a complex vacuum expectation value of a singlet scalar field breaks CP spontaneously. Using pragmatic organizing symmetries we demonstrate that such a model can simultaneously explain the neutrino oscillation data and generate observed baryon asymmetry through leptogenesis. Interestingly, natural choice of parameters leads to a mixed leptogenesis scenario driven by nearly degenerate scalar triplet and right handed singlet neutrino fields for which we present a detailed quantitative analysis.