Gravitational waves from a scotogenic two-loop neutrino mass model
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2023
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| _version_ | 1866910436918558720 |
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| author | Bonilla, Cesar Hernández, A. E. Cárcamo Gonçalves, João N., Vishnudath K. Morais, António P. Pasechnik, Roman |
| author_facet | Bonilla, Cesar Hernández, A. E. Cárcamo Gonçalves, João N., Vishnudath K. Morais, António P. Pasechnik, Roman |
| contents | We propose a framework to account for neutrino masses at the two-loop level. This mechanism introduces new scalars and Majorana fermions to the Standard Model. It is assumed the existence of a global $\mathrm{U(1)\times \mathcal{Z}_2}$ symmetry which after partial breaking provides the stability of the dark matter candidates of the theory. The rich structure of the potential allows for the possibility of first-order phase transitions (FOPTs) in the early Universe which can lead to the generation of primordial gravitational waves as one of the potentially observable signatures of this model. Taking into account relevant constraints from lepton flavour violation, neutrino physics as well as the trilinear Higgs couplings at next-to-leading order accuracy, we have found a wide range of possible FOPTs which are strong enough to be probed at the proposed gravitational-wave interferometer experiments such as LISA. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2305_01964 |
| institution | arXiv |
| publishDate | 2023 |
| record_format | arxiv |
| spellingShingle | Gravitational waves from a scotogenic two-loop neutrino mass model Bonilla, Cesar Hernández, A. E. Cárcamo Gonçalves, João N., Vishnudath K. Morais, António P. Pasechnik, Roman High Energy Physics - Phenomenology We propose a framework to account for neutrino masses at the two-loop level. This mechanism introduces new scalars and Majorana fermions to the Standard Model. It is assumed the existence of a global $\mathrm{U(1)\times \mathcal{Z}_2}$ symmetry which after partial breaking provides the stability of the dark matter candidates of the theory. The rich structure of the potential allows for the possibility of first-order phase transitions (FOPTs) in the early Universe which can lead to the generation of primordial gravitational waves as one of the potentially observable signatures of this model. Taking into account relevant constraints from lepton flavour violation, neutrino physics as well as the trilinear Higgs couplings at next-to-leading order accuracy, we have found a wide range of possible FOPTs which are strong enough to be probed at the proposed gravitational-wave interferometer experiments such as LISA. |
| title | Gravitational waves from a scotogenic two-loop neutrino mass model |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2305.01964 |