| Article | |
| Report number | arXiv:2205.01689 ; CERN-TH-2022-071 ; UMN-TH-4121/22 ; FTPI-MINN-22/12 |
| Title | Inflationary Gravitational Leptogenesis |
| Author(s) | Co, Raymond T. (Minnesota U., Theor. Phys. Inst.) ; Mambrini, Yann (IJCLab, Orsay ; CERN) ; Olive, Keith A. (Minnesota U., Theor. Phys. Inst.) |
| Publication | 2022-10-01 |
| Imprint | 2022-05-03 |
| Number of pages | 6 |
| Note | 6 pages, 3 figures |
| In: | Phys. Rev. D 106 (2022) 075006 |
| DOI | 10.1103/PhysRevD.106.075006 (publication) |
| Subject category | Astrophysics and Astronomy ; Particle Physics - Phenomenology |
| Abstract | We consider the generation of the baryon asymmetry in models with right-handed neutrinos produced through gravitational scattering of the inflaton during reheating. The right-handed neutrinos later decay and generate a lepton asymmetry, which is partially converted to a baryon asymmetry by Standard Model sphaleron processes. We find that a sufficient asymmetry can be generated for a wide range of right-handed neutrino masses and reheating temperatures. We also show that the same type of gravitational scattering produces Standard Model Higgs bosons, which can achieve inflationary reheating consistent with the production of a baryon asymmetry. |
| Copyright/License | publication: © 2022-2024 authors (License: CC BY 4.0), sponsored by SCOAP³ preprint: (License: arXiv nonexclusive-distrib 1.0) |
Corresponding record in: Inspire
Record created 2022-05-06, last modified 2023-10-04
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