Testing freeze-in with axial and vector Z′ bosons
Abstract The freeze-in production of Feebly Interacting Massive Particle (FIMP) dark matter in the early universe is an appealing alternative to the well-known — and constrained — Weakly Interacting Massive Particle (WIMP) paradigm. Although challenging, the phenomenology of FIMP dark matter has bee...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-09-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP09(2021)056 |
| _version_ | 1818908258561163264 |
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| author | Catarina Cosme Maíra Dutra Stephen Godfrey Taylor Gray |
| author_facet | Catarina Cosme Maíra Dutra Stephen Godfrey Taylor Gray |
| author_sort | Catarina Cosme |
| collection | DOAJ |
| description | Abstract The freeze-in production of Feebly Interacting Massive Particle (FIMP) dark matter in the early universe is an appealing alternative to the well-known — and constrained — Weakly Interacting Massive Particle (WIMP) paradigm. Although challenging, the phenomenology of FIMP dark matter has been receiving growing attention and is possible in a few scenarios. In this work, we contribute to this endeavor by considering a Z′ portal to fermionic dark matter, with the Z′ having both vector and axial couplings and a mass ranging from MeV up to PeV. We evaluate the bounds on both freeze-in and freeze-out from direct detection, atomic parity violation, leptonic anomalous magnetic moments, neutrino-electron scattering, collider, and beam dump experiments. We show that FIMPs can already be tested by most of these experiments in a complementary way, whereas WIMPs are especially viable in the Z′ low mass regime, in addition to the Z′ resonance region. We also discuss the role of the axial couplings of Z′ in our results. We therefore hope to motivate specific realizations of this model in the context of FIMPs, as well as searches for these elusive dark matter candidates. |
| first_indexed | 2024-12-19T22:08:10Z |
| format | Article |
| id | doaj.art-4ec8645edb0f4e9bb0773d7e567bd0bf |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-19T22:08:10Z |
| publishDate | 2021-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-4ec8645edb0f4e9bb0773d7e567bd0bf2022-12-21T20:03:59ZengSpringerOpenJournal of High Energy Physics1029-84792021-09-012021912710.1007/JHEP09(2021)056Testing freeze-in with axial and vector Z′ bosonsCatarina Cosme0Maíra Dutra1Stephen Godfrey2Taylor Gray3Ottawa-Carleton Institute for Physics, Carleton UniversityOttawa-Carleton Institute for Physics, Carleton UniversityOttawa-Carleton Institute for Physics, Carleton UniversityOttawa-Carleton Institute for Physics, Carleton UniversityAbstract The freeze-in production of Feebly Interacting Massive Particle (FIMP) dark matter in the early universe is an appealing alternative to the well-known — and constrained — Weakly Interacting Massive Particle (WIMP) paradigm. Although challenging, the phenomenology of FIMP dark matter has been receiving growing attention and is possible in a few scenarios. In this work, we contribute to this endeavor by considering a Z′ portal to fermionic dark matter, with the Z′ having both vector and axial couplings and a mass ranging from MeV up to PeV. We evaluate the bounds on both freeze-in and freeze-out from direct detection, atomic parity violation, leptonic anomalous magnetic moments, neutrino-electron scattering, collider, and beam dump experiments. We show that FIMPs can already be tested by most of these experiments in a complementary way, whereas WIMPs are especially viable in the Z′ low mass regime, in addition to the Z′ resonance region. We also discuss the role of the axial couplings of Z′ in our results. We therefore hope to motivate specific realizations of this model in the context of FIMPs, as well as searches for these elusive dark matter candidates.https://doi.org/10.1007/JHEP09(2021)056Beyond Standard ModelCosmology of Theories beyond the SM |
| spellingShingle | Catarina Cosme Maíra Dutra Stephen Godfrey Taylor Gray Testing freeze-in with axial and vector Z′ bosons Journal of High Energy Physics Beyond Standard Model Cosmology of Theories beyond the SM |
| title | Testing freeze-in with axial and vector Z′ bosons |
| title_full | Testing freeze-in with axial and vector Z′ bosons |
| title_fullStr | Testing freeze-in with axial and vector Z′ bosons |
| title_full_unstemmed | Testing freeze-in with axial and vector Z′ bosons |
| title_short | Testing freeze-in with axial and vector Z′ bosons |
| title_sort | testing freeze in with axial and vector z bosons |
| topic | Beyond Standard Model Cosmology of Theories beyond the SM |
| url | https://doi.org/10.1007/JHEP09(2021)056 |
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