Hot vs cold hidden sectors and their effects on thermal relics
Fuente:
arXiv
Saved in:
| Main Authors: | , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866929370812121088 |
|---|---|
| author | Li, Jinzheng Nath, Pran |
| author_facet | Li, Jinzheng Nath, Pran |
| contents | A variety of possibilities exist for dark matter aside from WIMPS, such as hidden sector dark matter. We discuss synchronous thermal evolution of visible and hidden sectors and show that the density of thermal relics can change $O(100\%)$ and $ΔN_{\rm eff}$ by a factor of up to $10^5$ depending of whether the hidden sector was hot or cold at the reheat temperature. It is also shown that the approximation of using separate entropy conservation for the visible and hidden sectors is invalid even for a very feeble coupling between the two. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2402_04123 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Hot vs cold hidden sectors and their effects on thermal relics Li, Jinzheng Nath, Pran High Energy Physics - Phenomenology A variety of possibilities exist for dark matter aside from WIMPS, such as hidden sector dark matter. We discuss synchronous thermal evolution of visible and hidden sectors and show that the density of thermal relics can change $O(100\%)$ and $ΔN_{\rm eff}$ by a factor of up to $10^5$ depending of whether the hidden sector was hot or cold at the reheat temperature. It is also shown that the approximation of using separate entropy conservation for the visible and hidden sectors is invalid even for a very feeble coupling between the two. |
| title | Hot vs cold hidden sectors and their effects on thermal relics |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2402.04123 |