  Assuming that cosmological dark matter consists of weakly interacting massive
particles, we use the recent precise measurement of cosmological parameters to
predict the guaranteed rates of production of such particles in association
with photons at electron-positron colliders. Our approach is based on general
physical principles such as detailed balancing and soft/collinear
factorization. It leads to predictions that are valid across a broad range of
models containing WIMPs, including supersymmetry, universal extra dimensions,
and many others. We also discuss the discovery prospects for the predicted
experimental signatures.
