Assessing perturbativity and vacuum stability in high-scale leptogenesis
Abstract We consider the requirements that all coupling constants remain perturbative and the electroweak vacuum metastable up to the Planck scale in high-scale thermal leptogenesis, in the context of a type-I seesaw mechanism. We find a large region of the model parameter space that satisfies these...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2018-12-01
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| Series: | Journal of High Energy Physics |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1007/JHEP12(2018)111 |
| _version_ | 1818481617896734720 |
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| author | Seyda Ipek Alexis D. Plascencia Jessica Turner |
| author_facet | Seyda Ipek Alexis D. Plascencia Jessica Turner |
| author_sort | Seyda Ipek |
| collection | DOAJ |
| description | Abstract We consider the requirements that all coupling constants remain perturbative and the electroweak vacuum metastable up to the Planck scale in high-scale thermal leptogenesis, in the context of a type-I seesaw mechanism. We find a large region of the model parameter space that satisfies these conditions in combination with producing the baryon asymmetry of the Universe. We demonstrate these conditions require Tr[Y N † Y N ] ≲ 0.66 on the neutrino Yukawa matrix. We also investigate this scenario in the presence of a large number N F of coloured Majorana octet fermions in order to make quantum chromodynamics asymptotically safe in the ultraviolet. |
| first_indexed | 2024-12-10T11:37:21Z |
| format | Article |
| id | doaj.art-3c078eeed0374d5eb1e43db3191be7c1 |
| institution | Directory Open Access Journal |
| issn | 1029-8479 |
| language | English |
| last_indexed | 2024-12-10T11:37:21Z |
| publishDate | 2018-12-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | Journal of High Energy Physics |
| spelling | doaj.art-3c078eeed0374d5eb1e43db3191be7c12022-12-22T01:50:23ZengSpringerOpenJournal of High Energy Physics1029-84792018-12-0120181212410.1007/JHEP12(2018)111Assessing perturbativity and vacuum stability in high-scale leptogenesisSeyda Ipek0Alexis D. Plascencia1Jessica Turner2Department of Physics and Astronomy, University of California IrvineInstitute for Particle Physics Phenomenology, Department of Physics, Durham UniversityTheoretical Physics Department, Fermi National Accelerator LaboratoryAbstract We consider the requirements that all coupling constants remain perturbative and the electroweak vacuum metastable up to the Planck scale in high-scale thermal leptogenesis, in the context of a type-I seesaw mechanism. We find a large region of the model parameter space that satisfies these conditions in combination with producing the baryon asymmetry of the Universe. We demonstrate these conditions require Tr[Y N † Y N ] ≲ 0.66 on the neutrino Yukawa matrix. We also investigate this scenario in the presence of a large number N F of coloured Majorana octet fermions in order to make quantum chromodynamics asymptotically safe in the ultraviolet.http://link.springer.com/article/10.1007/JHEP12(2018)111Beyond Standard ModelCosmology of Theories beyond the SMNeutrino Physics |
| spellingShingle | Seyda Ipek Alexis D. Plascencia Jessica Turner Assessing perturbativity and vacuum stability in high-scale leptogenesis Journal of High Energy Physics Beyond Standard Model Cosmology of Theories beyond the SM Neutrino Physics |
| title | Assessing perturbativity and vacuum stability in high-scale leptogenesis |
| title_full | Assessing perturbativity and vacuum stability in high-scale leptogenesis |
| title_fullStr | Assessing perturbativity and vacuum stability in high-scale leptogenesis |
| title_full_unstemmed | Assessing perturbativity and vacuum stability in high-scale leptogenesis |
| title_short | Assessing perturbativity and vacuum stability in high-scale leptogenesis |
| title_sort | assessing perturbativity and vacuum stability in high scale leptogenesis |
| topic | Beyond Standard Model Cosmology of Theories beyond the SM Neutrino Physics |
| url | http://link.springer.com/article/10.1007/JHEP12(2018)111 |
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