We consider the direct and indirect detection signatures of WIMPs χ in kinematic regimes with a heavier, but nearly degenerate, charged state χ. For small splittings of O(10) MeV, the scattering of WIMPs off nuclei may be dominated by inelastic recombination processes mediated by the formation of (χN) bound states, leading to a distinct signature for direct detection. These cross-sections are b...

We review the resummation of threshold logarithms for heavy quark, dijet, direct photon, and W boson production cross sections in hadronic collisions. Beyond leading logarithms the resummed cross section is sensitive to the color exchange in the hard scattering. The resummation is formulated at next-to-leading logarithmic or higher accuracy in terms of anomalous dimension matrices which describ...