DM search by studying X-rays following WIMP nuclear interactions

Details DM search by studying X-rays following WIMP nuclear interactions DM search by studying X-rays following WIMP nuclear interactions

Jul 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006aipc..847..147e&link_type=abstract

ORIGIN OF MATTER AND EVOLUTION OF GALAXIES: International Symposium on Origin of Matter and Evolution of Galaxies 2005: New Hori

Astronomy and Astrophysics

Astrophysics

Dark Matter, Elementary Particle Processes, X-Ray Sources, X-Ray Bursts

Scientific paper

Weakly interacting massive particles (WIMPs) are shown to be studied by measuring X-rays following inner-shell ionizations associated with WIMP nuclear interactions. Inner-shell electrons are well ionized by WIMP nuclear interactions. K shell ionization probabilities are of the order of 0.20 ~ 0.25 in case of 100 ~ 300 GeV WIMPs interacting with medium heavy nuclei. Thus K X-rays following K shell ionizations can be used to search for WIMPs. Exclusive studies of K X-rays in coincidence with nuclear recoils provide a good opportunity for high sensitivity measurements of WIMPs in the σp ~ 10-6 pb region. Several detector options for the exclusive X-ray studies are discussed.

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