论文标题
在模块化$ a_4 $对称性下的三个重物中微子的三个重物中微子之间的自然质量层次结构
Natural mass hierarchy among three heavy Majorana neutrinos for resonant leptogenesis under modular $A_4$ symmetry
论文作者
论文摘要
显然，与反物质相比，物质在宇宙中占主导地位。我们称此问题的重子不对称。 Baryon不对称是通过宇宙微波背景和大爆炸核合成测量的实验确定的。为了解决宇宙的重子数不对称以及中微子振荡，我们研究了模块化$ A_4 $对称性的辐射seesaw模型。退化重的主要中微子质量可以自然地在模块化$ a_4 $下的适当分配中实现，并具有模量$τ$的大型虚构部分，并且可以通过谐振诱导剂诱导测量的baryon数字，在TEV量表能量理论周围有效。我们还发现，通过满足中微子振荡数据的数值分析，对CP不对称的主要贡献是由RE [$τ$]产生的。
It is clear that matter is dominant in the Universe compared to antimatter. We call this problem baryon asymmetry. The baryon asymmetry is experimentally determined by both cosmic microwave background and big bang nucleosynthesis measurements. To resolve the baryon number asymmetry of the Universe as well as neutrino oscillations, we study a radiative seesaw model in a modular $A_4$ symmetry. Degenerate heavy Majorana neutrino masses can be naturally realized in an appropriate assignments under modular $A_4$ with large imaginary part of modulus $τ$, and it can induce measured baryon number via resonant leptogenesis that is valid in around TeV scale energy theory. We also find that the dominant contribution to the CP asymmetry arises from Re[$τ$] through our numerical analysis satisfying the neutrino oscillation data.
