We consider models of xenophobic dark matter , in which isospin-violating dark matter-nucleon interactions significantly degrade the response of xenon direct detection experiments .
For models of near-maximal xenophobia , with neutron-to-proton coupling ratio f _ { n } / f _ { p } \approx - 0.64 , and dark matter mass near 8 GeV , the regions of interest for CoGeNT and CDMS-Si and the region of interest identified by Collar and Fields in CDMS-Ge data can be brought into agreement .
This model may be tested in future direct , indirect , and collider searches .
Interestingly , because the natural isotope abundance of xenon implies that xenophobia has its limits , we find that this xenophobic model may be probed in the near future by xenon experiments .
Near-future data from the LHC and Fermi-LAT may also provide interesting alternative probes of xenophobic dark matter .