Thermal Dark Photon Dark Matter, Coscattering, and Long-lived ALPs
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arXiv
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| Format: | Preprint |
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2024
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| _version_ | 1866929716389216256 |
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| author | Sáez, Bastián Díaz |
| author_facet | Sáez, Bastián Díaz |
| contents | We study the thermal freeze-out of a dark photon dark matter in the so-called dark-axion portal - a triple coupling among a dark photon, an axion-like particle and the SM $γ$ or $Z$ boson. We analyze in detail the thermal production regimes: coscattering (aka conversion driven freeze-out), mediator freeze-out, and coannihilations. We found viable DM scenarios fulfilling the correct relic abundance in the three regimes. Apart of analyzing the parameter space for dark state masses between the GeV-TeV scale, we explore the prospects of having the axion-like field as a long-lived particle, possibly to be observed at the LHC and future detectors. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_06113 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Thermal Dark Photon Dark Matter, Coscattering, and Long-lived ALPs Sáez, Bastián Díaz High Energy Physics - Phenomenology We study the thermal freeze-out of a dark photon dark matter in the so-called dark-axion portal - a triple coupling among a dark photon, an axion-like particle and the SM $γ$ or $Z$ boson. We analyze in detail the thermal production regimes: coscattering (aka conversion driven freeze-out), mediator freeze-out, and coannihilations. We found viable DM scenarios fulfilling the correct relic abundance in the three regimes. Apart of analyzing the parameter space for dark state masses between the GeV-TeV scale, we explore the prospects of having the axion-like field as a long-lived particle, possibly to be observed at the LHC and future detectors. |
| title | Thermal Dark Photon Dark Matter, Coscattering, and Long-lived ALPs |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2405.06113 |