Phase Separation Unlocks Resonant Leptogenesis
Fuente:
arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2024
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| _version_ | 1866918135154606080 |
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| author | Arakawa, Jason Lu, Philip Takhistov, Volodymyr |
| author_facet | Arakawa, Jason Lu, Philip Takhistov, Volodymyr |
| contents | Distinct behavior of decaying particles in true and false vacua of the theory can lead to enhanced generation of baryon asymmetry, a scenario we call \textit{phase separation baryogenesis}. We demonstrate that for leptogenesis this naturally allows for right handed neutrinos to generate resonantly-enhanced lepton asymmetry without fine-tuning of their masses as in typical theories. Our mechanism allows for a variety of neutrino mass hierarchies and hence possible novel connections with observations. We present a concrete realization in a minimal model with a scalar field undergoing a phase transition. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_12228 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Phase Separation Unlocks Resonant Leptogenesis Arakawa, Jason Lu, Philip Takhistov, Volodymyr High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics Distinct behavior of decaying particles in true and false vacua of the theory can lead to enhanced generation of baryon asymmetry, a scenario we call \textit{phase separation baryogenesis}. We demonstrate that for leptogenesis this naturally allows for right handed neutrinos to generate resonantly-enhanced lepton asymmetry without fine-tuning of their masses as in typical theories. Our mechanism allows for a variety of neutrino mass hierarchies and hence possible novel connections with observations. We present a concrete realization in a minimal model with a scalar field undergoing a phase transition. |
| title | Phase Separation Unlocks Resonant Leptogenesis |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2409.12228 |