Sterile neutrino dark matter and leptogenesis in Left-Right Higgs Parity
Abstract The standard model Higgs quartic coupling vanishes at (109 − 1013) GeV. We study SU(2) L × SU(2) R × U(1) B−L theories that incorporate the Higgs Parity mechanism, where this becomes the scale of Left-Right symmetry breaking, v R . Furthermore, these theories solve the strong CP problem and...
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| Format: | Article |
| Language: | English |
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SpringerOpen
2021-01-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | https://doi.org/10.1007/JHEP01(2021)125 |
| _version_ | 1818721478791659520 |
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| author | David Dunsky Lawrence J. Hall Keisuke Harigaya |
| author_facet | David Dunsky Lawrence J. Hall Keisuke Harigaya |
| author_sort | David Dunsky |
| collection | DOAJ |
| description | Abstract The standard model Higgs quartic coupling vanishes at (109 − 1013) GeV. We study SU(2) L × SU(2) R × U(1) B−L theories that incorporate the Higgs Parity mechanism, where this becomes the scale of Left-Right symmetry breaking, v R . Furthermore, these theories solve the strong CP problem and predict three right-handed neutrinos. We introduce cosmologies where SU(2) R × U(1) B−L gauge interactions produce right-handed neutrinos via the freeze-out or freeze-in mechanisms. In both cases, we find the parameter space where the lightest right-handed neutrino is dark matter and the decay of a heavier one creates the baryon asymmetry of the universe via leptogenesis. A theory of flavor is constructed that naturally accounts for the lightness and stability of the right-handed neutrino dark matter, while maintaining sufficient baryon asymmetry. The dark matter abundance and successful natural leptogenesis require v R to be in the range (1010 − 1013) GeV for freeze-out, in remarkable agreement with the scale where the Higgs quartic coupling vanishes, whereas freeze-in requires v R ≳ 109 GeV. The allowed parameter space can be probed by the warmness of dark matter, precise determinations of the top quark mass and QCD coupling by future colliders and lattice computations, and measurement of the neutrino mass hierarchy. |
| first_indexed | 2024-12-17T20:39:23Z |
| format | Article |
| id | doaj.art-9c765080614849e392cffa9e826fe567 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-17T20:39:23Z |
| publishDate | 2021-01-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-9c765080614849e392cffa9e826fe5672022-12-21T21:33:21ZengSpringerOpenJournal of High Energy Physics1029-84792021-01-012021114710.1007/JHEP01(2021)125Sterile neutrino dark matter and leptogenesis in Left-Right Higgs ParityDavid Dunsky0Lawrence J. Hall1Keisuke Harigaya2Department of Physics, University of CaliforniaDepartment of Physics, University of CaliforniaSchool of Natural Sciences, Institute for Advanced StudyAbstract The standard model Higgs quartic coupling vanishes at (109 − 1013) GeV. We study SU(2) L × SU(2) R × U(1) B−L theories that incorporate the Higgs Parity mechanism, where this becomes the scale of Left-Right symmetry breaking, v R . Furthermore, these theories solve the strong CP problem and predict three right-handed neutrinos. We introduce cosmologies where SU(2) R × U(1) B−L gauge interactions produce right-handed neutrinos via the freeze-out or freeze-in mechanisms. In both cases, we find the parameter space where the lightest right-handed neutrino is dark matter and the decay of a heavier one creates the baryon asymmetry of the universe via leptogenesis. A theory of flavor is constructed that naturally accounts for the lightness and stability of the right-handed neutrino dark matter, while maintaining sufficient baryon asymmetry. The dark matter abundance and successful natural leptogenesis require v R to be in the range (1010 − 1013) GeV for freeze-out, in remarkable agreement with the scale where the Higgs quartic coupling vanishes, whereas freeze-in requires v R ≳ 109 GeV. The allowed parameter space can be probed by the warmness of dark matter, precise determinations of the top quark mass and QCD coupling by future colliders and lattice computations, and measurement of the neutrino mass hierarchy.https://doi.org/10.1007/JHEP01(2021)125Beyond Standard ModelCosmology of Theories beyond the SMHiggs PhysicsNeutrino Physics |
| spellingShingle | David Dunsky Lawrence J. Hall Keisuke Harigaya Sterile neutrino dark matter and leptogenesis in Left-Right Higgs Parity Journal of High Energy Physics Beyond Standard Model Cosmology of Theories beyond the SM Higgs Physics Neutrino Physics |
| title | Sterile neutrino dark matter and leptogenesis in Left-Right Higgs Parity |
| title_full | Sterile neutrino dark matter and leptogenesis in Left-Right Higgs Parity |
| title_fullStr | Sterile neutrino dark matter and leptogenesis in Left-Right Higgs Parity |
| title_full_unstemmed | Sterile neutrino dark matter and leptogenesis in Left-Right Higgs Parity |
| title_short | Sterile neutrino dark matter and leptogenesis in Left-Right Higgs Parity |
| title_sort | sterile neutrino dark matter and leptogenesis in left right higgs parity |
| topic | Beyond Standard Model Cosmology of Theories beyond the SM Higgs Physics Neutrino Physics |
| url | https://doi.org/10.1007/JHEP01(2021)125 |
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