Astrophysical Constraints on Decaying Dark Gravitons
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arXiv
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| Hauptverfasser: | , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866913210582433792 |
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| author | Law-Smith, Jamie A. P. Obied, Georges Prabhu, Anirudh Vafa, Cumrun |
| author_facet | Law-Smith, Jamie A. P. Obied, Georges Prabhu, Anirudh Vafa, Cumrun |
| contents | In the dark dimension scenario, which predicts an extra dimension of micron scale, dark gravitons (KK modes) are a natural dark matter candidate. In this paper, we study observable features of this model. In particular, their decay to standard matter fields can distort the CMB and impact other astrophysical signals. Using this we place bounds on the parameters of this model. In particular we find that the natural range of parameters in this scenario is consistent with these constraints and leads to the prediction that the mean mass of the dark matter today is close to a few hundred keV and the effective size of the extra dimension is around $1 - 30 \;μ\mathrm{m}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_11048 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Astrophysical Constraints on Decaying Dark Gravitons Law-Smith, Jamie A. P. Obied, Georges Prabhu, Anirudh Vafa, Cumrun High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory In the dark dimension scenario, which predicts an extra dimension of micron scale, dark gravitons (KK modes) are a natural dark matter candidate. In this paper, we study observable features of this model. In particular, their decay to standard matter fields can distort the CMB and impact other astrophysical signals. Using this we place bounds on the parameters of this model. In particular we find that the natural range of parameters in this scenario is consistent with these constraints and leads to the prediction that the mean mass of the dark matter today is close to a few hundred keV and the effective size of the extra dimension is around $1 - 30 \;μ\mathrm{m}$. |
| title | Astrophysical Constraints on Decaying Dark Gravitons |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Theory |
| url | https://arxiv.org/abs/2307.11048 |