Multicomponent Dark Matter in Radiative Seesaw Models
We discuss radiative seesaw models, in which an exact Z2×Z2′ symmetry is imposed. Due to the exact Z2×Z2′ symmetry, neutrino masses are generated at a two-loop level and at least two extra stable electrically neutral particles are predicted. We consider two models: one has a multi-component dark mat...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Frontiers Media S.A.
2017-11-01
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| Series: | Frontiers in Physics |
| Subjects: | |
| Online Access: | http://journal.frontiersin.org/article/10.3389/fphy.2017.00053/full |
| _version_ | 1811259650400583680 |
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| author | Mayumi Aoki Daiki Kaneko Jisuke Kubo |
| author_facet | Mayumi Aoki Daiki Kaneko Jisuke Kubo |
| author_sort | Mayumi Aoki |
| collection | DOAJ |
| description | We discuss radiative seesaw models, in which an exact Z2×Z2′ symmetry is imposed. Due to the exact Z2×Z2′ symmetry, neutrino masses are generated at a two-loop level and at least two extra stable electrically neutral particles are predicted. We consider two models: one has a multi-component dark matter system and the other one has a dark radiation in addition to a dark matter. In the multi-component dark matter system, non-standard dark matter annihilation processes exist. We find that they play important roles in determining the relic abundance and also responsible for the monochromatic neutrino lines resulting from the dark matter annihilation process. In the model with the dark radiation, the structure of the Yukawa coupling is considerably constrained and gives an interesting relationship among cosmology, lepton flavor violating decay of the charged leptons and the decay of the inert Higgs bosons. |
| first_indexed | 2024-04-12T18:34:47Z |
| format | Article |
| id | doaj.art-6928696738b5404fbc1486270f07938c |
| institution | Directory Open Access Journal |
| issn | 2296-424X |
| language | English |
| last_indexed | 2024-04-12T18:34:47Z |
| publishDate | 2017-11-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physics |
| spelling | doaj.art-6928696738b5404fbc1486270f07938c2022-12-22T03:20:58ZengFrontiers Media S.A.Frontiers in Physics2296-424X2017-11-01510.3389/fphy.2017.00053300841Multicomponent Dark Matter in Radiative Seesaw ModelsMayumi AokiDaiki KanekoJisuke KuboWe discuss radiative seesaw models, in which an exact Z2×Z2′ symmetry is imposed. Due to the exact Z2×Z2′ symmetry, neutrino masses are generated at a two-loop level and at least two extra stable electrically neutral particles are predicted. We consider two models: one has a multi-component dark matter system and the other one has a dark radiation in addition to a dark matter. In the multi-component dark matter system, non-standard dark matter annihilation processes exist. We find that they play important roles in determining the relic abundance and also responsible for the monochromatic neutrino lines resulting from the dark matter annihilation process. In the model with the dark radiation, the structure of the Yukawa coupling is considerably constrained and gives an interesting relationship among cosmology, lepton flavor violating decay of the charged leptons and the decay of the inert Higgs bosons.http://journal.frontiersin.org/article/10.3389/fphy.2017.00053/fullneutrino massdark matterradiative seesaw mechanismflavor physicsdark radiation |
| spellingShingle | Mayumi Aoki Daiki Kaneko Jisuke Kubo Multicomponent Dark Matter in Radiative Seesaw Models Frontiers in Physics neutrino mass dark matter radiative seesaw mechanism flavor physics dark radiation |
| title | Multicomponent Dark Matter in Radiative Seesaw Models |
| title_full | Multicomponent Dark Matter in Radiative Seesaw Models |
| title_fullStr | Multicomponent Dark Matter in Radiative Seesaw Models |
| title_full_unstemmed | Multicomponent Dark Matter in Radiative Seesaw Models |
| title_short | Multicomponent Dark Matter in Radiative Seesaw Models |
| title_sort | multicomponent dark matter in radiative seesaw models |
| topic | neutrino mass dark matter radiative seesaw mechanism flavor physics dark radiation |
| url | http://journal.frontiersin.org/article/10.3389/fphy.2017.00053/full |
| work_keys_str_mv | AT mayumiaoki multicomponentdarkmatterinradiativeseesawmodels AT daikikaneko multicomponentdarkmatterinradiativeseesawmodels AT jisukekubo multicomponentdarkmatterinradiativeseesawmodels |