تقرير
Modular $A_4$ invariance and leptogenesis
| العنوان: | Modular $A_4$ invariance and leptogenesis |
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| المؤلفون: | Asaka, Takehiko, Heo, Yongtae, Tatsuishi, Takuya H., Yoshida, Takahiro |
| سنة النشر: | 2019 |
| المجموعة: | Astrophysics High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Phenomenology, Astrophysics - Cosmology and Nongalactic Astrophysics |
| الوصف: | We consider a model with three right-handed neutrinos in which Yukawa coupling constants and Majorana masses are obtained by requiring the modular $A_4$ symmetry. It has been shown that the model can explain mass hierarchies and mixing patterns of charged leptons and neutrinos with the seesaw mechanism. In this article we investigate the leptogenesis by decays of right-handed neutrinos in this model. It is shown that masses of right-handed neutrinos are about $10^{13}$ GeV in order to account for the observed baryon asymmetry of the universe. Furthermore, the positive sign of the baryon asymmetry is obtained only for the limited ranges of mixing angles and CP violation phases of active neutrinos, which can be tested by future neutrino experiments. Comment: 17 pages, 14 figures, matches the published version |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1007/JHEP01(2020)144 |
| URL الوصول: | http://arxiv.org/abs/1909.06520 |
| رقم الأكسشن: | edsarx.1909.06520 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1007/JHEP01(2020)144 |
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