Leptogenesis implications of two-zero textures of Majorana neutrino mass matrix in type-I seesaw model
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2026
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| _version_ | 1866914417568907264 |
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| author | Ma, Xin-Tong Xu, Ding-Hui Zhao, Zhen-hua |
| author_facet | Ma, Xin-Tong Xu, Ding-Hui Zhao, Zhen-hua |
| contents | The type-I seesaw model with two-zero textures of the Majorana mass matrix for the right-handed neutrinos $M^{}_{\rm R}$ provides a highly predictive framework for neutrino mass generation and baryon asymmetry of the Universe via leptogenesis. In this work, we systematically investigate the compatibility of viable two-zero textures of $M^{}_{\rm R}$ with leptogenesis within the type-I seesaw scenario. We consider both a general diagonal Dirac neutrino mass matrix $M^{}_{\rm D}$ and two theoretically motivated special cases, namely the SO(10) GUT-inspired $M^{}_{\rm D} \sim \mathrm{diag}(m_u,m_c,m_t)$ and the flavor symmetry-induced $M^{}_{\rm D} \propto I$. Our study shows that two-zero textures of $M^{}_{\rm R}$ yield strong correlations between neutrino parameters and leptogenesis, offering distinctive phenomenological implications for neutrino flavor physics and baryon asymmetry of the Universe. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_23214 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Leptogenesis implications of two-zero textures of Majorana neutrino mass matrix in type-I seesaw model Ma, Xin-Tong Xu, Ding-Hui Zhao, Zhen-hua High Energy Physics - Phenomenology The type-I seesaw model with two-zero textures of the Majorana mass matrix for the right-handed neutrinos $M^{}_{\rm R}$ provides a highly predictive framework for neutrino mass generation and baryon asymmetry of the Universe via leptogenesis. In this work, we systematically investigate the compatibility of viable two-zero textures of $M^{}_{\rm R}$ with leptogenesis within the type-I seesaw scenario. We consider both a general diagonal Dirac neutrino mass matrix $M^{}_{\rm D}$ and two theoretically motivated special cases, namely the SO(10) GUT-inspired $M^{}_{\rm D} \sim \mathrm{diag}(m_u,m_c,m_t)$ and the flavor symmetry-induced $M^{}_{\rm D} \propto I$. Our study shows that two-zero textures of $M^{}_{\rm R}$ yield strong correlations between neutrino parameters and leptogenesis, offering distinctive phenomenological implications for neutrino flavor physics and baryon asymmetry of the Universe. |
| title | Leptogenesis implications of two-zero textures of Majorana neutrino mass matrix in type-I seesaw model |
| topic | High Energy Physics - Phenomenology |
| url | https://arxiv.org/abs/2603.23214 |