Multicomponent dark matter with collider implications
Abstract The present work aims to study an extension of the Standard Model (SM) that addresses the prominent SM shortcomings, i.e., can explain the neutrino mass, the dark matter (DM) content, and the matter-antimatter asymmetry of the Universe. The model introduces the possibility of a multicompone...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-08-01
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| Series: | Journal of High Energy Physics |
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| Online Access: | https://doi.org/10.1007/JHEP08(2025)046 |
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| author | Laura Covi Shyamashish Dey Sarif Khan Santosh Kumar Rai |
| author_facet | Laura Covi Shyamashish Dey Sarif Khan Santosh Kumar Rai |
| author_sort | Laura Covi |
| collection | DOAJ |
| description | Abstract The present work aims to study an extension of the Standard Model (SM) that addresses the prominent SM shortcomings, i.e., can explain the neutrino mass, the dark matter (DM) content, and the matter-antimatter asymmetry of the Universe. The model introduces the possibility of a multicomponent DM scenario leading to distinctive signals at colliders. The SM is extended by a “dark” SU(2) D gauge symmetry and new fermions and scalar doublets, charged only under SU(2) D , that provide candidates for a multicomponent DM. Previously, we have considered in this model the asymmetric DM scenario, while in the present work, we explore the symmetric DM case. We focus on the parameter region where the dark fermion DM annihilates dominantly into the additional dark gauge bosons and the “inert” doublet DM annihilates to SM states via the SM Higgs resonance. This particular choice of doublet mass ensures that the heavier BSM Higgs always has one decay mode open to DM leading to the possibility of detecting such particles at the LHC, in the missing energy plus dijet ( + 2j) final states. We also discuss the prospects for detecting DM through direct and indirect detection experiments and via Long-Lived-Particle searches. Finally, we show that, as typical of other WIMP models, for low DM mass, signals can be expected in future collider experiments, but for the higher mass range above 500 GeV we have to rely solely on direct detection experiments. Both types of experiments will be essential to fully cover the allowed parameter space. |
| format | Article |
| id | doaj-art-4683d4d8cfe94abfa3a9df8202ac8f83 |
| institution | Kabale University |
| issn | 1029-8479 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj-art-4683d4d8cfe94abfa3a9df8202ac8f832025-08-20T03:45:40ZengSpringerOpenJournal of High Energy Physics1029-84792025-08-012025814010.1007/JHEP08(2025)046Multicomponent dark matter with collider implicationsLaura Covi0Shyamashish Dey1Sarif Khan2Santosh Kumar Rai3Institut für Theoretische Physik, Georg-August-Universität GöttingenRegional Centre for Accelerator-based Particle Physics, Harish-Chandra Research Institute, A CI of Homi Bhabha National InstituteInstitut für Theoretische Physik, Georg-August-Universität GöttingenRegional Centre for Accelerator-based Particle Physics, Harish-Chandra Research Institute, A CI of Homi Bhabha National InstituteAbstract The present work aims to study an extension of the Standard Model (SM) that addresses the prominent SM shortcomings, i.e., can explain the neutrino mass, the dark matter (DM) content, and the matter-antimatter asymmetry of the Universe. The model introduces the possibility of a multicomponent DM scenario leading to distinctive signals at colliders. The SM is extended by a “dark” SU(2) D gauge symmetry and new fermions and scalar doublets, charged only under SU(2) D , that provide candidates for a multicomponent DM. Previously, we have considered in this model the asymmetric DM scenario, while in the present work, we explore the symmetric DM case. We focus on the parameter region where the dark fermion DM annihilates dominantly into the additional dark gauge bosons and the “inert” doublet DM annihilates to SM states via the SM Higgs resonance. This particular choice of doublet mass ensures that the heavier BSM Higgs always has one decay mode open to DM leading to the possibility of detecting such particles at the LHC, in the missing energy plus dijet ( + 2j) final states. We also discuss the prospects for detecting DM through direct and indirect detection experiments and via Long-Lived-Particle searches. Finally, we show that, as typical of other WIMP models, for low DM mass, signals can be expected in future collider experiments, but for the higher mass range above 500 GeV we have to rely solely on direct detection experiments. Both types of experiments will be essential to fully cover the allowed parameter space.https://doi.org/10.1007/JHEP08(2025)046Models for Dark MatterDark Matter at CollidersMulti-Higgs Models |
| spellingShingle | Laura Covi Shyamashish Dey Sarif Khan Santosh Kumar Rai Multicomponent dark matter with collider implications Journal of High Energy Physics Models for Dark Matter Dark Matter at Colliders Multi-Higgs Models |
| title | Multicomponent dark matter with collider implications |
| title_full | Multicomponent dark matter with collider implications |
| title_fullStr | Multicomponent dark matter with collider implications |
| title_full_unstemmed | Multicomponent dark matter with collider implications |
| title_short | Multicomponent dark matter with collider implications |
| title_sort | multicomponent dark matter with collider implications |
| topic | Models for Dark Matter Dark Matter at Colliders Multi-Higgs Models |
| url | https://doi.org/10.1007/JHEP08(2025)046 |
| work_keys_str_mv | AT lauracovi multicomponentdarkmatterwithcolliderimplications AT shyamashishdey multicomponentdarkmatterwithcolliderimplications AT sarifkhan multicomponentdarkmatterwithcolliderimplications AT santoshkumarrai multicomponentdarkmatterwithcolliderimplications |