WIMP cogenesis for asymmetric dark matter and the baryon asymmetry
Abstract We propose a new mechanism where asymmetric dark matter (ADM) and the baryon asymmetry are both generated in the same decay chain of a metastable weakly interacting massive particle (WIMP) after its thermal freezeout. Dark matter and baryons are connected by a generalized baryon number that...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2020-12-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP12(2020)046 |
| _version_ | 1818929322782621696 |
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| author | Yanou Cui Michael Shamma |
| author_facet | Yanou Cui Michael Shamma |
| author_sort | Yanou Cui |
| collection | DOAJ |
| description | Abstract We propose a new mechanism where asymmetric dark matter (ADM) and the baryon asymmetry are both generated in the same decay chain of a metastable weakly interacting massive particle (WIMP) after its thermal freezeout. Dark matter and baryons are connected by a generalized baryon number that is conserved, while the DM asymmetry and baryon asymmetry compensate each other. This unified framework addresses the DM-baryon coincidence while inheriting the merit of the conventional WIMP miracle in predicting relic abundances of matter. Examples of renormalizable models realizing this scenario are presented. These models generically predict ADM with sub-GeV to GeV-scale mass that interacts with Standard Model quarks or leptons, thus rendering potential signatures at direct detection experiments sensitive to low mass DM. Other interesting phenomenological predictions are also discussed, including: LHC signatures of new intermediate particles with color or electroweak charge and DM induced nucleon decay; the long-lived WIMP may be within reach of future high energy collider experiments. |
| first_indexed | 2024-12-20T03:42:58Z |
| format | Article |
| id | doaj.art-f1592bdefaf4403cb8dd983f9f879dbb |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-20T03:42:58Z |
| publishDate | 2020-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-f1592bdefaf4403cb8dd983f9f879dbb2022-12-21T19:54:42ZengSpringerOpenJournal of High Energy Physics1029-84792020-12-0120201213010.1007/JHEP12(2020)046WIMP cogenesis for asymmetric dark matter and the baryon asymmetryYanou Cui0Michael Shamma1Department of Physics and Astronomy, University of CaliforniaDepartment of Physics and Astronomy, University of CaliforniaAbstract We propose a new mechanism where asymmetric dark matter (ADM) and the baryon asymmetry are both generated in the same decay chain of a metastable weakly interacting massive particle (WIMP) after its thermal freezeout. Dark matter and baryons are connected by a generalized baryon number that is conserved, while the DM asymmetry and baryon asymmetry compensate each other. This unified framework addresses the DM-baryon coincidence while inheriting the merit of the conventional WIMP miracle in predicting relic abundances of matter. Examples of renormalizable models realizing this scenario are presented. These models generically predict ADM with sub-GeV to GeV-scale mass that interacts with Standard Model quarks or leptons, thus rendering potential signatures at direct detection experiments sensitive to low mass DM. Other interesting phenomenological predictions are also discussed, including: LHC signatures of new intermediate particles with color or electroweak charge and DM induced nucleon decay; the long-lived WIMP may be within reach of future high energy collider experiments.https://doi.org/10.1007/JHEP12(2020)046Beyond Standard ModelCosmology of Theories beyond the SM |
| spellingShingle | Yanou Cui Michael Shamma WIMP cogenesis for asymmetric dark matter and the baryon asymmetry Journal of High Energy Physics Beyond Standard Model Cosmology of Theories beyond the SM |
| title | WIMP cogenesis for asymmetric dark matter and the baryon asymmetry |
| title_full | WIMP cogenesis for asymmetric dark matter and the baryon asymmetry |
| title_fullStr | WIMP cogenesis for asymmetric dark matter and the baryon asymmetry |
| title_full_unstemmed | WIMP cogenesis for asymmetric dark matter and the baryon asymmetry |
| title_short | WIMP cogenesis for asymmetric dark matter and the baryon asymmetry |
| title_sort | wimp cogenesis for asymmetric dark matter and the baryon asymmetry |
| topic | Beyond Standard Model Cosmology of Theories beyond the SM |
| url | https://doi.org/10.1007/JHEP12(2020)046 |
| work_keys_str_mv | AT yanoucui wimpcogenesisforasymmetricdarkmatterandthebaryonasymmetry AT michaelshamma wimpcogenesisforasymmetricdarkmatterandthebaryonasymmetry |