PT Journal
AU Escudero, M
   Hooper, D
   Witte, SJ
TI Updated collider and direct detection constraints on Dark Matter models for the Galactic Center gamma-ray excess
SO Journal of Cosmology and Astroparticle Physics
JI J. Cosmol. Astropart. Phys.
PY 2017
BP 038
EP 21pp
VL 02
IS 2
DI 10.1088/1475-7516/2017/02/038
LA English
DE dark matter experiments; dark matter theory
AB Utilizing an exhaustive set of simplified models, we revisit dark matter scenarios potentially capable of generating the observed Galactic Center gamma-ray excess, updating constraints from the LUX and PandaX- II experiments, as well as from the LHC and other colliders. We identify a variety of pseudoscalar mediated models that remain consistent with all constraints. In contrast, dark matter candidates which annihilate through a spin-1 mediator are ruled out by direct detection constraints unless the mass of the mediator is near an annihilation resonance, or the mediator has a purely vector coupling to the dark matter and a purely axial coupling to Standard Model fermions. All scenarios in which the dark matter annihilates throught-channel processes are now ruled out by a combination of the constraints from LUX/ PandaX-II and the LHC.
ER