论文标题
隐藏区域的右中微子门户：主动中微子及其双胞胎在F理论模型中
A Right-handed Neutrino Portal to the Hidden sector : Active Neutrinos and their Twins in an F-theory model
论文作者
论文摘要
我们在$ su（5）$ f理论模型中分析了中微子现象学，既有可见的扇区又是双胞胎隐藏的部门。在低能量下，两个扇区的强和弱尺度可能有所不同，但在可见的（双胞胎）扇区中，MSSM（MSSM $^\ prime $）描述了状态的光谱。该模型的特殊之处在于，有右手中微子通过Yukawa耦合到两个部门。结果，假设3个右手中微子的质量远大于弱尺度，在树级时，Seesaw机制会导致3个巨大的主要中微子和3个无质量的中微子。无质量的中微子通过辐射校正获得质量。在我们的分析中，无质量的中微子主要是活跃的中微子，而大规模的中微子主要是无菌中微子。我们适合活跃的中微子肿块和混合角度，并讨论最轻的无菌中微子的现象学。最后，我们考虑了一些宇宙学的可能方案。
We analyze the neutrino phenomenology in an $SU(5)$ F-theory model with both a visible sector and a twin hidden sector. At low energies, the strong and weak scales of the two sectors may differ but the spectrum of states is described by the MSSM (MSSM$^\prime$) in the visible (twin) sectors. What is special about the model is that there are right-handed neutrinos which couple to both sectors via Yukawa couplings. As a result, assuming 3 right-handed neutrinos with a large mass much greater than the weak scale, at tree-level the seesaw mechanism results in 3 massive Majorana neutrinos and 3 massless ones. The massless neutrinos acquire mass via radiative corrections. In our analysis, the massless neutrinos are predominantly active neutrinos, while the massive neutrinos are predominantly sterile neutrinos. We fit the active neutrino masses and mixing angles and discuss the phenomenology of the lightest sterile neutrino. Finally we consider some possible scenarios for cosmology.
