Baryogenesis from sphaleron decoupling
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2023
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| _version_ | 1866910489345261568 |
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| author | Hong, Muzi Kamada, Kohei Yokoyama, Jun'ichi |
| author_facet | Hong, Muzi Kamada, Kohei Yokoyama, Jun'ichi |
| contents | The electroweak sphaleron process breaks the baryon number conservation within the realms of the Standard Model of particle physics (SM). Recently, it is pointed out that its decoupling may provide the out-of-equilibrium condition required for baryogenesis. In this paper, we study such a scenario taking into account the baryon-number wash-out effect of the sphaleron itself to improve the estimate. We clarify the amount of CP violation required for this scenario to explain the observed asymmetry. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2304_13999 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Baryogenesis from sphaleron decoupling Hong, Muzi Kamada, Kohei Yokoyama, Jun'ichi High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics The electroweak sphaleron process breaks the baryon number conservation within the realms of the Standard Model of particle physics (SM). Recently, it is pointed out that its decoupling may provide the out-of-equilibrium condition required for baryogenesis. In this paper, we study such a scenario taking into account the baryon-number wash-out effect of the sphaleron itself to improve the estimate. We clarify the amount of CP violation required for this scenario to explain the observed asymmetry. |
| title | Baryogenesis from sphaleron decoupling |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2304.13999 |