Towards a more complete description of hybrid leptogenesis
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arXiv
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| Auteurs principaux: | , , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866909230461616128 |
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| author | Pramanick, Rohan Ray, Tirtha Sankar Sil, Arunansu |
| author_facet | Pramanick, Rohan Ray, Tirtha Sankar Sil, Arunansu |
| contents | Hybrid leptogenesis framework combining type I and type II seesaw mechanism for neutrino mass necessarily include scattering topologies involving both the scalar triplet and the right handed neutrino. We demonstrate that a systematic inclusion of these mixed scatterings can significantly alter the evolution of the number densities exhibiting up to a factor ten deviation in the predicted asymmetry as demonstrated by our benchmark scenarios. We provide quantitative constraints on the degeneracy of the seesaw scales where the complete analysis becomes numerically significant, limiting the validity of leptogenesis being dominated by the lightest seesaw species only. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2401_12189 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Towards a more complete description of hybrid leptogenesis Pramanick, Rohan Ray, Tirtha Sankar Sil, Arunansu High Energy Physics - Phenomenology Hybrid leptogenesis framework combining type I and type II seesaw mechanism for neutrino mass necessarily include scattering topologies involving both the scalar triplet and the right handed neutrino. We demonstrate that a systematic inclusion of these mixed scatterings can significantly alter the evolution of the number densities exhibiting up to a factor ten deviation in the predicted asymmetry as demonstrated by our benchmark scenarios. We provide quantitative constraints on the degeneracy of the seesaw scales where the complete analysis becomes numerically significant, limiting the validity of leptogenesis being dominated by the lightest seesaw species only. |
| title | Towards a more complete description of hybrid leptogenesis |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2401.12189 |