Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states
Abstract This work presents an asymmetric dark matter model with relic density determined by the freeze-out of asymmetric semi-annihilations into long-lived particles slowly decaying into the Standard Model states. We carefully consider the CPT symmetry and unitarity constraints to the asymmetries e...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-04-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP04(2025)104 |
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| _version_ | 1849728250454999040 |
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| author | Tomáš Blažek Peter Maták Viktor Zaujec |
| author_facet | Tomáš Blažek Peter Maták Viktor Zaujec |
| author_sort | Tomáš Blažek |
| collection | DOAJ |
| description | Abstract This work presents an asymmetric dark matter model with relic density determined by the freeze-out of asymmetric semi-annihilations into long-lived particles slowly decaying into the Standard Model states. We carefully consider the CPT symmetry and unitarity constraints to the asymmetries entering the Boltzmann equation. The main idea of the paper is to point out a critical inconsistency in the previous literature, where these constraints are violated. We present a systematic approach to avoid the inconsistency. |
| format | Article |
| id | doaj-art-c8dc7e8bccc54dcaab657dfb79163931 |
| institution | DOAJ |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-04-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-c8dc7e8bccc54dcaab657dfb791639312025-08-20T03:09:35ZengSpringerOpenJournal of High Energy Physics1029-84792025-04-012025411310.1007/JHEP04(2025)104Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final statesTomáš Blažek0Peter Maták1Viktor Zaujec2Department of Theoretical Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in BratislavaDepartment of Theoretical Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in BratislavaDepartment of Theoretical Physics, Faculty of Mathematics, Physics and Informatics, Comenius University in BratislavaAbstract This work presents an asymmetric dark matter model with relic density determined by the freeze-out of asymmetric semi-annihilations into long-lived particles slowly decaying into the Standard Model states. We carefully consider the CPT symmetry and unitarity constraints to the asymmetries entering the Boltzmann equation. The main idea of the paper is to point out a critical inconsistency in the previous literature, where these constraints are violated. We present a systematic approach to avoid the inconsistency.https://doi.org/10.1007/JHEP04(2025)104Early Universe Particle PhysicsModels for Dark MatterParticle Nature of Dark Matter |
| spellingShingle | Tomáš Blažek Peter Maták Viktor Zaujec Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states Journal of High Energy Physics Early Universe Particle Physics Models for Dark Matter Particle Nature of Dark Matter |
| title | Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states |
| title_full | Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states |
| title_fullStr | Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states |
| title_full_unstemmed | Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states |
| title_short | Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states |
| title_sort | asymmetric dark matter from semi annihilation unitarity constraints and long lived final states |
| topic | Early Universe Particle Physics Models for Dark Matter Particle Nature of Dark Matter |
| url | https://doi.org/10.1007/JHEP04(2025)104 |
| work_keys_str_mv | AT tomasblazek asymmetricdarkmatterfromsemiannihilationunitarityconstraintsandlonglivedfinalstates AT petermatak asymmetricdarkmatterfromsemiannihilationunitarityconstraintsandlonglivedfinalstates AT viktorzaujec asymmetricdarkmatterfromsemiannihilationunitarityconstraintsandlonglivedfinalstates |