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| Autores principales: | , , , |
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| Formato: | Preprint |
| Publicado: |
2023
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| Materias: | |
| Acceso en línea: | https://arxiv.org/abs/2306.07865 |
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| _version_ | 1866929201647452160 |
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| author | Kannike, Kristjan Kubarski, Aleksei Marzola, Luca Racioppi, Antonio |
| author_facet | Kannike, Kristjan Kubarski, Aleksei Marzola, Luca Racioppi, Antonio |
| contents | We consider a scale-invariant inverse seesaw model with dynamical breaking of gauge symmetry and lepton number. In some regions of the parameter space, the Majoron - the pseudo-Goldstone of lepton number breaking - is a viable dark matter candidate. The bound on the Majoron decay rate implies a very large dilaton vacuum expectation value, which also results in a suppression of other dark matter couplings. Because of that, the observed dark matter relic abundance can only be matched via the freeze-in mechanism. The scalar field which gives mass to heavy neutrinos can play the role of the inflaton, resulting in a tensor-to-scalar ratio $r \lesssim 0.01$ for metric inflation and $r \lesssim 0.21$ for Palatini gravity. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2306_07865 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Pseudo-Goldstone dark matter in a radiative inverse seesaw scenario Kannike, Kristjan Kubarski, Aleksei Marzola, Luca Racioppi, Antonio High Energy Physics - Phenomenology We consider a scale-invariant inverse seesaw model with dynamical breaking of gauge symmetry and lepton number. In some regions of the parameter space, the Majoron - the pseudo-Goldstone of lepton number breaking - is a viable dark matter candidate. The bound on the Majoron decay rate implies a very large dilaton vacuum expectation value, which also results in a suppression of other dark matter couplings. Because of that, the observed dark matter relic abundance can only be matched via the freeze-in mechanism. The scalar field which gives mass to heavy neutrinos can play the role of the inflaton, resulting in a tensor-to-scalar ratio $r \lesssim 0.01$ for metric inflation and $r \lesssim 0.21$ for Palatini gravity. |
| title | Pseudo-Goldstone dark matter in a radiative inverse seesaw scenario |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2306.07865 |