Dortmund 2006 – scientific programme

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T: Teilchenphysik

T 508: Kosmische Strahlung X

T 508.2: Talk

Thursday, March 30, 2006, 16:35–16:50, HG2-HS1

From the Scattering Spectrum of Dark Matter Direct Detection to Velocity Distribution Function of WIMPs — •CHUNG-LIN SHAN — Physikalisches Institut der Universitaet Bonn, Nussallee 12, D-53115, Bonn

Weakly interacting massive particles (WIMPs) are one of the leading candidates for dark matter. Currently, the most promising method to detect many different WIMP candidates is the direct detection of the recoil energy deposited in a low-background laboratory detector due to elastic WIMP-nucleus scattering. So far the usual research has been to built some models of the Galactic halo and then predict the event rate of direct detection of WIMPs. The aim of our work is to invert this process. That is, we study what future direct detection experiment can teach us about the WIMP halo. As a first step we used time-averaged recoil spectra, assuming that no directional information exists. We develop a method to reconstruct the (time averaged) one-dimensional velocity distribution.