Gravitational waves from neutrino mass genesis
Gravitational waves from neutrino mass genesis
The discovery of gravitational waves opens new opportunities to test BSM physics. In particular, the production of a stochastic background of primordial gravitational waves could provide a signature of the generation of the right-right Majorana neutrino mass term necessary, within type-I seesaw mechanism, to explain lightness of neutrinos and their mixing parameters. I will discuss the possibility that such a generation occurs during a strong first order phase transition within Majoron models [1]. As well known, this can indeed produce a stochastic background of gravitational waves. The scale of the phase transition can or cannot coincide with the seesaw scale. In the latter case a low scale phase transition, occurring in the pre-recombination era, might be tested at very low frequencies ($10^{-9}$--$10^{-6}\,{\rm Hz}$). Even though the signal can hardly reproduce the NANOGrac putative signal such new physics at low scale might help ameliorating the tensions in the $\Lambda$CDM cosmological model (e.g., the Hubble tension). I will also discuss how a phase transition might be responsible for the generation of dark matter in the form of dark neutrinos coupling to the seesaw neutrinos via Higgs induced right handed-right handed neutrino mixing [2].
hep-ph
Bari, Pasquale Di
3fe21e59-0eff-41bc-8faa-fdd817146418
Bari, Pasquale Di
3fe21e59-0eff-41bc-8faa-fdd817146418
Bari, Pasquale Di
(2022)
Gravitational waves from neutrino mass genesis.
Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity", Corfu, Greece, Corfu, Greece.
29 Aug - 09 Oct 2021.
(In Press)
(doi:10.48550/arXiv.2205.05744).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The discovery of gravitational waves opens new opportunities to test BSM physics. In particular, the production of a stochastic background of primordial gravitational waves could provide a signature of the generation of the right-right Majorana neutrino mass term necessary, within type-I seesaw mechanism, to explain lightness of neutrinos and their mixing parameters. I will discuss the possibility that such a generation occurs during a strong first order phase transition within Majoron models [1]. As well known, this can indeed produce a stochastic background of gravitational waves. The scale of the phase transition can or cannot coincide with the seesaw scale. In the latter case a low scale phase transition, occurring in the pre-recombination era, might be tested at very low frequencies ($10^{-9}$--$10^{-6}\,{\rm Hz}$). Even though the signal can hardly reproduce the NANOGrac putative signal such new physics at low scale might help ameliorating the tensions in the $\Lambda$CDM cosmological model (e.g., the Hubble tension). I will also discuss how a phase transition might be responsible for the generation of dark matter in the form of dark neutrinos coupling to the seesaw neutrinos via Higgs induced right handed-right handed neutrino mixing [2].
More information
Accepted/In Press date: 11 May 2022
Additional Information:
19 pages, 5 figures; Proceedings of the Corfu Summer Institute 2021
Venue - Dates:
Corfu Summer Institute 2021 "School and Workshops on Elementary Particle Physics and Gravity", Corfu, Greece, Corfu, Greece, 2021-08-29 - 2021-10-09
Keywords:
hep-ph
Identifiers
Local EPrints ID: 472302
URI: http://eprints.soton.ac.uk/id/eprint/472302
PURE UUID: 32b90f2a-f515-41bb-9a7b-c8c2ccf8f194
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Date deposited: 30 Nov 2022 18:01
Last modified: 16 Mar 2024 23:31
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