  The WIMP proposed here yields the observed abundance of dark matter, and is
consistent with the current limits from direct detection, indirect detection,
and collider experiments, if its mass is $\sim 72$ GeV/$c^2$. It is also
consistent with analyses of the gamma rays observed by Fermi-LAT from the
Galactic center (and other sources), and of the antiprotons observed by AMS-02,
in which the excesses are attributed to dark matter annihilation. These
successes are shared by the inert doublet model (IDM), but the phenomenology is
very different: The dark matter candidate of the IDM has first-order gauge
couplings to other new particles, whereas the present candidate does not. In
addition to indirect detection through annihilation products, it appears that
the present particle can be observed in the most sensitive direct-detection and
collider experiments currently being planned.
