Left-Right Symmetric Neutrino Mass Model without Scalar Bi-doublet
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arXiv
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| Autores principales: | , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| _version_ | 1866910922304389120 |
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| author | Borboruah, Zafri A. Malhotra, Lekhika Patel, Utkarsh Patra, Sudhanwa Sankar, S. Uma |
| author_facet | Borboruah, Zafri A. Malhotra, Lekhika Patel, Utkarsh Patra, Sudhanwa Sankar, S. Uma |
| contents | We consider a left-right symmetric model with an $SU(2)_L$ and an $SU(2)_R$ scalar doublet but without the scalar bidoublet. The charged fermion masses in this model are generated via a universal seesaw mechanism. We add a set of three gauge singlet neutral fermions with Majorana masses of the order of a TeV. The masses for the left-handed neutrinos are naturally small in this model because they occur only at one-loop and are generated through a see-saw mechanism. By an appropriate choice of the Yukawa couplings of the $SU(2)_L$ doublet and the masses of the gauge singlet fermions, it is possible to implement resonant leptogenesis at TeV scale. The right-handed sector of the model, through appropriate values of the Yukawa couplings of the $SU(2)_R$ doublet, leads to a warm dark matter candidate in the lightest right-handed neutrino with a mass of a few keV and an observable effective electron mass for neutrinoless double beta decay $m_{ββ}$. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_08267 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Left-Right Symmetric Neutrino Mass Model without Scalar Bi-doublet Borboruah, Zafri A. Malhotra, Lekhika Patel, Utkarsh Patra, Sudhanwa Sankar, S. Uma High Energy Physics - Phenomenology We consider a left-right symmetric model with an $SU(2)_L$ and an $SU(2)_R$ scalar doublet but without the scalar bidoublet. The charged fermion masses in this model are generated via a universal seesaw mechanism. We add a set of three gauge singlet neutral fermions with Majorana masses of the order of a TeV. The masses for the left-handed neutrinos are naturally small in this model because they occur only at one-loop and are generated through a see-saw mechanism. By an appropriate choice of the Yukawa couplings of the $SU(2)_L$ doublet and the masses of the gauge singlet fermions, it is possible to implement resonant leptogenesis at TeV scale. The right-handed sector of the model, through appropriate values of the Yukawa couplings of the $SU(2)_R$ doublet, leads to a warm dark matter candidate in the lightest right-handed neutrino with a mass of a few keV and an observable effective electron mass for neutrinoless double beta decay $m_{ββ}$. |
| title | Left-Right Symmetric Neutrino Mass Model without Scalar Bi-doublet |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2504.08267 |