Probing High Reheating Temperatures by Direct Detection Experiments
Fuente:
arXiv
Saved in:
| Main Author: | |
|---|---|
| Format: | Preprint |
| Published: |
2025
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866915636490272768 |
|---|---|
| author | Haghi, Barmak Shams Es |
| author_facet | Haghi, Barmak Shams Es |
| contents | We argue that the benchmark freeze in dark matter (DM) scenario for direct detection experiments, in which a DM candidate interacts with the Standard Model (SM) through an ultralight dark photon, becomes sensitive to the visible sector reheating temperature if it is sufficiently high. At such temperatures, the irreducible ultraviolet (UV) freeze in production of DM through graviton exchange becomes important and must be combined with the infrared (IR) freeze in yield mediated by the dark photon. As long as gravitationally produced DM does not equilibrate through annihilation into dark photons and the subsequent formation of a dark thermal bath, it retains information about the reheating phase. Including this gravitational contribution relaxes the required DM and SM portal coupling and allows smaller values than those that would match the observed relic abundance through IR freeze in alone. Since current direct detection experiments have excluded the benchmark freeze in model over a wide range of DM masses, they are now effectively probing high reheating temperatures and the gravitational freeze in of DM. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_19621 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Probing High Reheating Temperatures by Direct Detection Experiments Haghi, Barmak Shams Es High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics We argue that the benchmark freeze in dark matter (DM) scenario for direct detection experiments, in which a DM candidate interacts with the Standard Model (SM) through an ultralight dark photon, becomes sensitive to the visible sector reheating temperature if it is sufficiently high. At such temperatures, the irreducible ultraviolet (UV) freeze in production of DM through graviton exchange becomes important and must be combined with the infrared (IR) freeze in yield mediated by the dark photon. As long as gravitationally produced DM does not equilibrate through annihilation into dark photons and the subsequent formation of a dark thermal bath, it retains information about the reheating phase. Including this gravitational contribution relaxes the required DM and SM portal coupling and allows smaller values than those that would match the observed relic abundance through IR freeze in alone. Since current direct detection experiments have excluded the benchmark freeze in model over a wide range of DM masses, they are now effectively probing high reheating temperatures and the gravitational freeze in of DM. |
| title | Probing High Reheating Temperatures by Direct Detection Experiments |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2511.19621 |