Resonant Leptogenesis in Minimal U(1)X Extensions of the Standard Model
- NázevTitle
- Resonant Leptogenesis in Minimal U(1)X Extensions of the Standard ModelResonant Leptogenesis in Minimal U(1)X Extensions of the Standard Model
- Druh výsledkuResult type
- Příspěvek ve sborníkuProceedings paper
- AutořiAuthors
- Y. Orikasa
- DOIDOI
- 10.5506/AphysPolBSupp.18.6-A25
- Časopis / citaceJournal / citation
- Acta Physica Polonica B Proceedings Supplement 18(6), 1 (2025) · ISSN 1899-2358
- RokYear
- 2025
- JazykLanguage
- eng
- ZáznamyRecords
- ProjektProject
- Institucionální podpora na rozvoj výzkumné org.Institucionální podpora na rozvoj výzkumné org.
- Citace ke staženíDownload citation
- TXT · BibTeX
AbstraktAbstract
We investigate a general U(1)X scenario where we introduce three generations of Standard Model (SM) singlet right-handed neutrinos (RHNs) to generate the light neutrino mass through the seesaw mechanism after the breaking of U(1)X and electroweak symmetries. In addition to that, a general U(1)X scenario involves an SM-singlet scalar field and due to the U(1)X symmetry breaking, the mass of a neutral beyond the SM (BSM) gauge boson Z′ is evolved. The RHNs, being charged under the U(1)X scenario, can explain the origin of the observed baryon asymmetry through the resonant leptogenesis process. Applying observed neutrino oscillation data, we study Z′ and BSM scalar-induced processes to reproduce the observed baryon asymmetry. Hence, we estimate bounds on the U(1)X gauge coupling and the mass of the Z′ for different U(1)X charges and benchmark masses of RHN and SM-singlet scalar. Finally, we compare our results with limits obtained from the existing limits from LEP-II and LHC.
We investigate a general U(1)X scenario where we introduce three generations of Standard Model (SM) singlet right-handed neutrinos (RHNs) to generate the light neutrino mass through the seesaw mechanism after the breaking of U(1)X and electroweak symmetries. In addition to that, a general U(1)X scenario involves an SM-singlet scalar field and due to the U(1)X symmetry breaking, the mass of a neutral beyond the SM (BSM) gauge boson Z′ is evolved. The RHNs, being charged under the U(1)X scenario, can explain the origin of the observed baryon asymmetry through the resonant leptogenesis process. Applying observed neutrino oscillation data, we study Z′ and BSM scalar-induced processes to reproduce the observed baryon asymmetry. Hence, we estimate bounds on the U(1)X gauge coupling and the mass of the Z′ for different U(1)X charges and benchmark masses of RHN and SM-singlet scalar. Finally, we compare our results with limits obtained from the existing limits from LEP-II and LHC.