Monopole Catalyzed Baryogenesis with a $θ$ angle
Fuente:
arXiv
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Format: | Preprint |
| Veröffentlicht: |
2024
|
| Schlagworte: | |
| Online-Zugang: | |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| _version_ | 1866915070956535808 |
|---|---|
| author | Brennan, T. Daniel Wang, Lian-Tao Xiao, Huangyu |
| author_facet | Brennan, T. Daniel Wang, Lian-Tao Xiao, Huangyu |
| contents | Monopoles are generally expected in Grand Unified Theories (GUTs) where they can catalyze baryon decay at an unsuppressed rate by the Callan-Rubakov effect. For the first time, we show this catalysis effect can generate the observed baryon asymmetry at GeV scale temperatures. We study the minimal SU(5) GUT model and demonstrate that monopoles-fermion scattering with a $CP$-violating $θ$-term leads to realistic baryogenesis even when $θ\lesssim 10^{-10}$ is below the neutron EDM bound, potentially detectable in the future measurements. Our calculation also shows that to generate the observed baryon asymmetry, the abundance of the monopoles is below the current experiential bounds. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2412_14239 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Monopole Catalyzed Baryogenesis with a $θ$ angle Brennan, T. Daniel Wang, Lian-Tao Xiao, Huangyu High Energy Physics - Phenomenology High Energy Physics - Theory Monopoles are generally expected in Grand Unified Theories (GUTs) where they can catalyze baryon decay at an unsuppressed rate by the Callan-Rubakov effect. For the first time, we show this catalysis effect can generate the observed baryon asymmetry at GeV scale temperatures. We study the minimal SU(5) GUT model and demonstrate that monopoles-fermion scattering with a $CP$-violating $θ$-term leads to realistic baryogenesis even when $θ\lesssim 10^{-10}$ is below the neutron EDM bound, potentially detectable in the future measurements. Our calculation also shows that to generate the observed baryon asymmetry, the abundance of the monopoles is below the current experiential bounds. |
| title | Monopole Catalyzed Baryogenesis with a $θ$ angle |
| topic | High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2412.14239 |