Bouncing pNGB dark matter via a fermion dark matter
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 cosm...
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| Veröffentlicht in: | Journal of cosmology and astroparticle physics 2024-03, Vol.2024 (3), p.10 |
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| container_title | Journal of cosmology and astroparticle physics |
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| creator | Sáez, Bastián Díaz Contreras, Patricio Escalona |
| description | 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. |
| doi_str_mv | 10.1088/1475-7516/2024/03/010 |
| format | Article |
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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
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Bouncing DM
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| subjects | Astronomical models Bosons Bouncing Cosmology Dark matter dark matter theory Fermions Higgs bosons particle physics - cosmology connection physics of the early universe Scalars |
| title | Bouncing pNGB dark matter via a fermion dark matter |
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