  It is shown that weakly interacting massive particles (WIMPs), which are
possible cold dark matter candidates, can be studied by exclusive measurements
of X-rays following WIMPs nuclear interactions. Inner-shell atomic electrons
are ionized through WIMP-nuclear interaction, and then mono-energetic X-rays
are emitted when they are filled by outer-shell electrons. The number of
inner-shell holes amounts to as large as one per five nuclear recoils for
K-shell and several per recoil for L-shell in the case of medium heavy target
nuclei interacting with 100-300 GeV WIMPs. Then the K and L X-ray peaks show up
in the 5-50 keV region. Consequently exclusive studies of the X-rays in
coincidence with the nuclear recoils and the ionization electrons are found to
provide excellent opportunities to detect WIMPs such as the Lightest Super
Symmetric Particles (LSP)

High Energy Physics - Phenomenology;High Energy Physics - Experiment;Nuclear Theory