论文标题
III型中微子Seesaw，冻结长寿命的暗物质和$ W $ shift
Type III Neutrino Seesaw, Freeze-In Long-Lived Dark Matter, and the $W$ Mass Shift
论文作者
论文摘要
在沉重费米昂三重态的Seesaw Neutminino质量的框架中，添加了轻微的Fermion Singlet $ n $和一个重的标量三胞胎$（ρ^+，ρ^0，ρ^ - ）$有一些重要的后果。在新的$ z_2 $对称性下，新粒子被认为是奇怪的，该对称性仅在明显和自发的自发上轻轻地折断。随着$ n-σ^0 $混合，可以通过希格斯衰减的冻结长寿命的暗物质。同时，正如最近的精确度量所暗示的那样，$ w $质量略微向上移动。
In the framework of seesaw neutrino masses from heavy fermion triplets $(Σ^+,Σ^0,Σ^-)$, the addition of a light fermion singlet $N$ and a heavy scalar triplet $(ρ^+,ρ^0,ρ^-)$ has some important consequences. The new particles are assumed to be odd under a new $Z_2$ symmetry which is only broken softly, both explicitly and spontaneously. With $N-Σ^0$ mixing, freeze-in long-lived dark matter through Higgs decay becomes possible. At the same time, the $W$ mass is shifted slightly upward, as suggested by a recent precision measurement.
