Probing leptogenesis at future colliders
Abstract We investigate the question whether leptogenesis, as a mechanism for explaining the baryon asymmetry of the universe, can be tested at future colliders. Focusing on the minimal scenario of two right-handed neutrinos, we identify the allowed parameter space for successful leptogenesis in the...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-09-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP09(2018)124 |
| _version_ | 1828333095968833536 |
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| author | Stefan Antusch Eros Cazzato Marco Drewes Oliver Fischer Björn Garbrecht Dario Gueter Juraj Klarić |
| author_facet | Stefan Antusch Eros Cazzato Marco Drewes Oliver Fischer Björn Garbrecht Dario Gueter Juraj Klarić |
| author_sort | Stefan Antusch |
| collection | DOAJ |
| description | Abstract We investigate the question whether leptogenesis, as a mechanism for explaining the baryon asymmetry of the universe, can be tested at future colliders. Focusing on the minimal scenario of two right-handed neutrinos, we identify the allowed parameter space for successful leptogenesis in the heavy neutrino mass range between 5 and 50 GeV. Our calculation includes the lepton flavour violating contribution from heavy neutrino oscillations as well as the lepton number violating contribution from Higgs decays to the baryon asymmetry of the universe. We confront this parameter space region with the discovery potential for heavy neutrinos at future lepton colliders, which can be very sensitive in this mass range via displaced vertex searches. Beyond the discovery of heavy neutrinos, we study the precision at which the flavour-dependent active-sterile mixing angles can be measured. The measurement of these mixing angles at future colliders can test whether a minimal type I seesaw mechanism is the origin of the light neutrino masses, and it can be a first step towards probing leptogenesis as the mechanism of baryogenesis. We discuss how a stronger test could be achieved with an additional measurement of the heavy neutrino mass difference. |
| first_indexed | 2024-04-13T21:15:41Z |
| format | Article |
| id | doaj.art-2a5e48f335a644aa8e76157c05a36f0d |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-04-13T21:15:41Z |
| publishDate | 2018-09-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-2a5e48f335a644aa8e76157c05a36f0d2022-12-22T02:29:42ZengSpringerOpenJournal of High Energy Physics1029-84792018-09-012018915310.1007/JHEP09(2018)124Probing leptogenesis at future collidersStefan Antusch0Eros Cazzato1Marco Drewes2Oliver Fischer3Björn Garbrecht4Dario Gueter5Juraj Klarić6Department of Physics, University of BaselDepartment of Physics, University of BaselCentre for Cosmology, Particle Physics and Phenomenology, Université catholique de LouvainDepartment of Physics, University of BaselPhysik Department T70, Technische Universität MünchenMax-Planck-Institut für Physik (Werner-Heisenberg-Institut)Physik Department T70, Technische Universität MünchenAbstract We investigate the question whether leptogenesis, as a mechanism for explaining the baryon asymmetry of the universe, can be tested at future colliders. Focusing on the minimal scenario of two right-handed neutrinos, we identify the allowed parameter space for successful leptogenesis in the heavy neutrino mass range between 5 and 50 GeV. Our calculation includes the lepton flavour violating contribution from heavy neutrino oscillations as well as the lepton number violating contribution from Higgs decays to the baryon asymmetry of the universe. We confront this parameter space region with the discovery potential for heavy neutrinos at future lepton colliders, which can be very sensitive in this mass range via displaced vertex searches. Beyond the discovery of heavy neutrinos, we study the precision at which the flavour-dependent active-sterile mixing angles can be measured. The measurement of these mixing angles at future colliders can test whether a minimal type I seesaw mechanism is the origin of the light neutrino masses, and it can be a first step towards probing leptogenesis as the mechanism of baryogenesis. We discuss how a stronger test could be achieved with an additional measurement of the heavy neutrino mass difference.http://link.springer.com/article/10.1007/JHEP09(2018)124Cosmology of Theories beyond the SMNeutrino PhysicsBeyond Standard Model |
| spellingShingle | Stefan Antusch Eros Cazzato Marco Drewes Oliver Fischer Björn Garbrecht Dario Gueter Juraj Klarić Probing leptogenesis at future colliders Journal of High Energy Physics Cosmology of Theories beyond the SM Neutrino Physics Beyond Standard Model |
| title | Probing leptogenesis at future colliders |
| title_full | Probing leptogenesis at future colliders |
| title_fullStr | Probing leptogenesis at future colliders |
| title_full_unstemmed | Probing leptogenesis at future colliders |
| title_short | Probing leptogenesis at future colliders |
| title_sort | probing leptogenesis at future colliders |
| topic | Cosmology of Theories beyond the SM Neutrino Physics Beyond Standard Model |
| url | http://link.springer.com/article/10.1007/JHEP09(2018)124 |
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