Radion Portal Freeze-Out Dark-Matter
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| Main Authors: | , , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866913963961221120 |
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| author | Chivukula, R. Sekhar Gill, Joshua A. Goh, Kenn S. Mohan, Kirtimaan A. Sanamyan, George Sengupta, Dipan Simmons, Elizabeth H. Wang, Xing |
| author_facet | Chivukula, R. Sekhar Gill, Joshua A. Goh, Kenn S. Mohan, Kirtimaan A. Sanamyan, George Sengupta, Dipan Simmons, Elizabeth H. Wang, Xing |
| contents | We show that, in a consistent model of a stabilized extra-dimensional theory, the radion can serve as a natural portal between ordinary matter and WIMP dark matter. With an effective coupling scale of the Kaluza-Klein theory of 20-100 TeV, the radion portal can produce the observed relic abundance through resonant annihilation for dark matter masses up to a TeV. Existing and planned direct dark matter detection experiments cannot constrain this model. However, indirect detection limits exclude dark matter masses between 5 and 80 GeV, where the radion mediator primarily decays into b-quarks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2507_21218 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Radion Portal Freeze-Out Dark-Matter Chivukula, R. Sekhar Gill, Joshua A. Goh, Kenn S. Mohan, Kirtimaan A. Sanamyan, George Sengupta, Dipan Simmons, Elizabeth H. Wang, Xing High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Experiment High Energy Physics - Theory We show that, in a consistent model of a stabilized extra-dimensional theory, the radion can serve as a natural portal between ordinary matter and WIMP dark matter. With an effective coupling scale of the Kaluza-Klein theory of 20-100 TeV, the radion portal can produce the observed relic abundance through resonant annihilation for dark matter masses up to a TeV. Existing and planned direct dark matter detection experiments cannot constrain this model. However, indirect detection limits exclude dark matter masses between 5 and 80 GeV, where the radion mediator primarily decays into b-quarks. |
| title | Radion Portal Freeze-Out Dark-Matter |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics High Energy Physics - Experiment High Energy Physics - Theory |
| url | https://arxiv.org/abs/2507.21218 |