Affleck-Dine cogenesis of baryon and dark matter
Abstract We propose a mechanism for cogenesis of baryon and dark matter (DM) in the universe via the Affleck-Dine (AD) route. An AD field which breaks the lepton number symmetry, leads to the generation of lepton asymmetry by virtue of its cosmic evolution, which then gets transferred into lepton an...
| 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)004 |
| _version_ | 1827859764606926848 |
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| author | Debasish Borah Suruj Jyoti Das Nobuchika Okada |
| author_facet | Debasish Borah Suruj Jyoti Das Nobuchika Okada |
| author_sort | Debasish Borah |
| collection | DOAJ |
| description | Abstract We propose a mechanism for cogenesis of baryon and dark matter (DM) in the universe via the Affleck-Dine (AD) route. An AD field which breaks the lepton number symmetry, leads to the generation of lepton asymmetry by virtue of its cosmic evolution, which then gets transferred into lepton and dark sectors. While the lepton asymmetry gets converted into baryon asymmetry via sphalerons, the dark sector asymmetry leads to the final DM abundance with the symmetric part being annihilated away due to resonantly enhanced annihilation, which we choose to be provided by a gauged B − L portal. Stringent constraints from DM direct detection forces DM and B − L gauge boson masses to be light, in the few GeV ballpark. While a large portion of the model parameter space is already ruled out, the remaining parameter space is within sensitivity of laboratory as well as cosmology based experiments. The AD field also plays the role of inflaton with the required dynamics by virtue of its non-minimal coupling to gravity, consistent with observations. |
| first_indexed | 2024-03-12T13:13:10Z |
| format | Article |
| id | doaj.art-2d996a28565d41b09d989de5d28d4601 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-03-12T13:13:10Z |
| publishDate | 2023-05-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-2d996a28565d41b09d989de5d28d46012023-08-27T11:06:36ZengSpringerOpenJournal of High Energy Physics1029-84792023-05-012023511710.1007/JHEP05(2023)004Affleck-Dine cogenesis of baryon and dark matterDebasish Borah0Suruj Jyoti Das1Nobuchika Okada2Department of Physics, Indian Institute of Technology GuwahatiDepartment of Physics, Indian Institute of Technology GuwahatiDepartment of Physics, University of AlabamaAbstract We propose a mechanism for cogenesis of baryon and dark matter (DM) in the universe via the Affleck-Dine (AD) route. An AD field which breaks the lepton number symmetry, leads to the generation of lepton asymmetry by virtue of its cosmic evolution, which then gets transferred into lepton and dark sectors. While the lepton asymmetry gets converted into baryon asymmetry via sphalerons, the dark sector asymmetry leads to the final DM abundance with the symmetric part being annihilated away due to resonantly enhanced annihilation, which we choose to be provided by a gauged B − L portal. Stringent constraints from DM direct detection forces DM and B − L gauge boson masses to be light, in the few GeV ballpark. While a large portion of the model parameter space is already ruled out, the remaining parameter space is within sensitivity of laboratory as well as cosmology based experiments. The AD field also plays the role of inflaton with the required dynamics by virtue of its non-minimal coupling to gravity, consistent with observations.https://doi.org/10.1007/JHEP05(2023)004Baryo-and LeptogenesisNew Gauge InteractionsParticle Nature of Dark Matter |
| spellingShingle | Debasish Borah Suruj Jyoti Das Nobuchika Okada Affleck-Dine cogenesis of baryon and dark matter Journal of High Energy Physics Baryo-and Leptogenesis New Gauge Interactions Particle Nature of Dark Matter |
| title | Affleck-Dine cogenesis of baryon and dark matter |
| title_full | Affleck-Dine cogenesis of baryon and dark matter |
| title_fullStr | Affleck-Dine cogenesis of baryon and dark matter |
| title_full_unstemmed | Affleck-Dine cogenesis of baryon and dark matter |
| title_short | Affleck-Dine cogenesis of baryon and dark matter |
| title_sort | affleck dine cogenesis of baryon and dark matter |
| topic | Baryo-and Leptogenesis New Gauge Interactions Particle Nature of Dark Matter |
| url | https://doi.org/10.1007/JHEP05(2023)004 |
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