Quark-flavored scalar dark matter
  It is an intriguing possibility that dark matter (DM) could have flavor
quantum numbers like the quarks. We propose and investigate a class of
UV-complete models of this kind, in which the dark matter is in a scalar
triplet of an SU(3) flavor symmetry, and interacts with quarks via a colored
flavor-singlet fermionic mediator. Such mediators could be discovered at the
LHC if their masses are $\sim 1$ TeV. We constrain the DM-mediator couplings
using relic abundance, direct detection, and flavor-changing neutral-current
considerations. We find that, for reasonable values of its couplings, scalar
flavored DM can contribute significantly to the real and imaginary parts of the
$B_s$-$\bar B_s$ mixing amplitude. We further assess the potential for such
models to explain the galactic center GeV gamma-ray excess.
