Local $Z_2$ scalar dark matter model confronting galactic $\mathrm{G}eV$-scale $\gamma$-ray

Seungwon Baek, P. Ko, Wan-Il Park

We present a scalar dark matter (DM) model where DM ($X_I$) is stabilized by a local $Z_2$ symmetry originating from a spontaneously broken local dark $U(1{)}_X$. Compared with the u…