Isospin-Violating Dark Matter in the $U(1{)}^{\prime }$ Model with $E_6$ Origin

Tianjun Li, Qian-Fei Xiang, Qi-Shu Yan +2

We propose a $U(1{)}^{\prime }$ model from $E_6$ which has an isospin-violation dark matter. By choosing a proper linear combination of two extra $U(1)$ gauge symmetries in $E_6$, it is natur…