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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| Online-Zugang: | https://arxiv.org/abs/2506.22248 |
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| _version_ | 1866909939305283584 |
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| author | Benincasa, Nico Rose, Luigi Delle Panizzi, Luca Razzaq, Maimoona Urzetta, Savio |
| author_facet | Benincasa, Nico Rose, Luigi Delle Panizzi, Luca Razzaq, Maimoona Urzetta, Savio |
| contents | We study a scenario where the Standard Model is extended by a SU(2) gauge group in the dark sector. The three associated dark gauge bosons are stabilised via a custodial symmetry triggered by an additional dark SU(2) scalar doublet, thus making them viable dark-matter candidates. After considering the most recent constraints for this model, we analyse the phase transition dynamics and compute the power spectrum of resulting stochastic gravitational-wave background. Finally, we find regions of the parameter space yielding the observed dark-matter relic density while also leading to strong enough phase transition with an associated gravitational-wave signal reaching the sensitivity of future space-based gravitational-wave detector, such as LISA, DECIGO, BBO, TianQin or Taiji. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_22248 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Phase transitions and gravitational waves in a non-abelian vector dark matter scenario Benincasa, Nico Rose, Luigi Delle Panizzi, Luca Razzaq, Maimoona Urzetta, Savio High Energy Physics - Phenomenology We study a scenario where the Standard Model is extended by a SU(2) gauge group in the dark sector. The three associated dark gauge bosons are stabilised via a custodial symmetry triggered by an additional dark SU(2) scalar doublet, thus making them viable dark-matter candidates. After considering the most recent constraints for this model, we analyse the phase transition dynamics and compute the power spectrum of resulting stochastic gravitational-wave background. Finally, we find regions of the parameter space yielding the observed dark-matter relic density while also leading to strong enough phase transition with an associated gravitational-wave signal reaching the sensitivity of future space-based gravitational-wave detector, such as LISA, DECIGO, BBO, TianQin or Taiji. |
| title | Phase transitions and gravitational waves in a non-abelian vector dark matter scenario |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2506.22248 |