1202.6359 (Paolo Gondolo et al.)

Halo independent comparison of direct dark matter detection data    [PDF]

Paolo Gondolo, Graciela B. Gelmini

We extend the halo-independent method of Fox, Liu, and Weiner to include energy resolution and efficiency with arbitrary energy dependence, making it more suitable for experiments to use in presenting their results. Then we compare measurements and upper limits on the direct detection of low mass (~10 GeV) weakly interacting massive particles (WIMPs) with spin-independent interactions, including the preliminary upper limit on the annual modulation amplitude from the CDMS collaboration. We find that isospin-symmetric couplings are severely constrained, but isospin-violating couplings are still possible if for example the local Galactic escape speed is small, as found in recent surveys.

View original: http://arxiv.org/abs/1202.6359