Dark matter semi-annihilation for inert scalar multiplets
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2024
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| _version_ | 1866917706710646784 |
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| author | Beauchesne, Hugues Chiang, Cheng-Wei |
| author_facet | Beauchesne, Hugues Chiang, Cheng-Wei |
| contents | Dark matter semi-annihilation is a process through which two dark matter candidates annihilate to a single dark matter particle and a non-dark matter particle. Such processes are common when the symmetry stabilizing the dark matter differs from $\mathbb{Z}_2$ and can lead to qualitatively different phenomenology. In this work, we study the viability of semi-annihilation models including one or two inert multiplets. For one multiplet, we show that there does not exist any viable model in which semi-annihilation is efficient. For two multiplets, semi-annihilation can be efficient, but the number of viable and technically natural models is limited. We then perform a detailed study of the most promising model, showing that the correct relic abundance can be obtained for a wide range of masses. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2403_01729 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Dark matter semi-annihilation for inert scalar multiplets Beauchesne, Hugues Chiang, Cheng-Wei High Energy Physics - Phenomenology Dark matter semi-annihilation is a process through which two dark matter candidates annihilate to a single dark matter particle and a non-dark matter particle. Such processes are common when the symmetry stabilizing the dark matter differs from $\mathbb{Z}_2$ and can lead to qualitatively different phenomenology. In this work, we study the viability of semi-annihilation models including one or two inert multiplets. For one multiplet, we show that there does not exist any viable model in which semi-annihilation is efficient. For two multiplets, semi-annihilation can be efficient, but the number of viable and technically natural models is limited. We then perform a detailed study of the most promising model, showing that the correct relic abundance can be obtained for a wide range of masses. |
| title | Dark matter semi-annihilation for inert scalar multiplets |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2403.01729 |