Bouncing pNGB Dark Matter via a Fermion Dark Matter
Fuente:
arXiv
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| Autori principali: | , |
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| Natura: | Preprint |
| Pubblicazione: |
2023
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| _version_ | 1866909119103893504 |
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| author | Sáez, Bastián Díaz Contreras, Patricio Escalona |
| author_facet | Sáez, Bastián Díaz Contreras, Patricio Escalona |
| contents | In addition to the Standard Model, the introduction of a singlet complex scalar field that acquires vacuum expectation value may give rise to a cosmologically stable pseudo-Nambu-Goldstone boson (pNGB), a suitable dark matter (DM) candidate. This work extends this scenario by including a second cosmologically stable particle: a fermion singlet. The pNGB and the new fermion can be regarded as DM candidates simultaneously, both interacting with the Standard Model through Higgs portals via two non-degenerate Higgs bosons. We explore the thermal freeze-out of this scenario, with particular emphasis on the increasing yield of the pNGB before it completely decouples (recently called Bouncing DM). We test the model under collider bounds, relic abundance, and direct detection, and we explore some indirect detection observables today. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2307_07760 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Bouncing pNGB Dark Matter via a Fermion Dark Matter Sáez, Bastián Díaz Contreras, Patricio Escalona High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics In addition to the Standard Model, the introduction of a singlet complex scalar field that acquires vacuum expectation value may give rise to a cosmologically stable pseudo-Nambu-Goldstone boson (pNGB), a suitable dark matter (DM) candidate. This work extends this scenario by including a second cosmologically stable particle: a fermion singlet. The pNGB and the new fermion can be regarded as DM candidates simultaneously, both interacting with the Standard Model through Higgs portals via two non-degenerate Higgs bosons. We explore the thermal freeze-out of this scenario, with particular emphasis on the increasing yield of the pNGB before it completely decouples (recently called Bouncing DM). We test the model under collider bounds, relic abundance, and direct detection, and we explore some indirect detection observables today. |
| title | Bouncing pNGB Dark Matter via a Fermion Dark Matter |
| topic | High Energy Physics - Phenomenology Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2307.07760 |