Asymmetries in extended dark sectors: a cogenesis scenario
Abstract The observed dark matter relic abundance may be explained by different mechanisms, such as thermal freeze-out/freeze-in, with one or more symmetric/asymmetric components. In this work we investigate the role played by asymmetries in determining the yield and nature of dark matter in non-min...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2023-05-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP05(2023)049 |
| _version_ | 1797736452095737856 |
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| author | Juan Herrero-García Giacomo Landini Drona Vatsyayan |
| author_facet | Juan Herrero-García Giacomo Landini Drona Vatsyayan |
| author_sort | Juan Herrero-García |
| collection | DOAJ |
| description | Abstract The observed dark matter relic abundance may be explained by different mechanisms, such as thermal freeze-out/freeze-in, with one or more symmetric/asymmetric components. In this work we investigate the role played by asymmetries in determining the yield and nature of dark matter in non-minimal scenarios with more than one dark matter particle. In particular, we show that the energy density of a particle may come from an asymmetry, even if the particle is asymptotically symmetric by nature. To illustrate the different effects of asymmetries, we adopt a model with two dark matter components. We embed it in a multi-component cogenesis scenario that is also able to reproduce neutrino masses and the baryon asymmetry. In some cases, the model predicts an interesting monochromatic neutrino line that may be searched for at neutrino telescopes. |
| first_indexed | 2024-03-12T13:14:08Z |
| format | Article |
| id | doaj.art-0bfcb174771743cf812d18682d4d6e44 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-12T13:14:08Z |
| publishDate | 2023-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-0bfcb174771743cf812d18682d4d6e442023-08-27T11:05:37ZengSpringerOpenJournal of High Energy Physics1029-84792023-05-012023514110.1007/JHEP05(2023)049Asymmetries in extended dark sectors: a cogenesis scenarioJuan Herrero-García0Giacomo Landini1Drona Vatsyayan2Departamento de Física Teórica, Universidad de Valencia and IFIC, Universidad de Valencia-CSICDepartamento de Física Teórica, Universidad de Valencia and IFIC, Universidad de Valencia-CSICDepartamento de Física Teórica, Universidad de Valencia and IFIC, Universidad de Valencia-CSICAbstract The observed dark matter relic abundance may be explained by different mechanisms, such as thermal freeze-out/freeze-in, with one or more symmetric/asymmetric components. In this work we investigate the role played by asymmetries in determining the yield and nature of dark matter in non-minimal scenarios with more than one dark matter particle. In particular, we show that the energy density of a particle may come from an asymmetry, even if the particle is asymptotically symmetric by nature. To illustrate the different effects of asymmetries, we adopt a model with two dark matter components. We embed it in a multi-component cogenesis scenario that is also able to reproduce neutrino masses and the baryon asymmetry. In some cases, the model predicts an interesting monochromatic neutrino line that may be searched for at neutrino telescopes.https://doi.org/10.1007/JHEP05(2023)049Models for Dark MatterParticle Nature of Dark Matter |
| spellingShingle | Juan Herrero-García Giacomo Landini Drona Vatsyayan Asymmetries in extended dark sectors: a cogenesis scenario Journal of High Energy Physics Models for Dark Matter Particle Nature of Dark Matter |
| title | Asymmetries in extended dark sectors: a cogenesis scenario |
| title_full | Asymmetries in extended dark sectors: a cogenesis scenario |
| title_fullStr | Asymmetries in extended dark sectors: a cogenesis scenario |
| title_full_unstemmed | Asymmetries in extended dark sectors: a cogenesis scenario |
| title_short | Asymmetries in extended dark sectors: a cogenesis scenario |
| title_sort | asymmetries in extended dark sectors a cogenesis scenario |
| topic | Models for Dark Matter Particle Nature of Dark Matter |
| url | https://doi.org/10.1007/JHEP05(2023)049 |
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