Other
Scientific paper
May 2004
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..apr.v4002k&link_type=abstract
American Physical Society, April Meeting, 2004, May 1-4, 2004, Denver, Colorado April 2004, MEETING ID: APR04, abstract #V4.002
Other
Scientific paper
Comparison of the results of different direct WIMP dark matter detection experiments depends upon assumptions regarding a number of factors, including particle physics uncertainties, and astrophysical ones. In addition to cross sections, determined by the underlying particle physics, and target nuclei, event rates and their energy distribution depend upon WIMP masses, the halo density in the solar neighborhood, and also on the velocity phase space distribution. We discuss how these halo uncertainties impact upon experiments sensitive to annual modulation vs experiments that detect signals on an event-by event basis. This is particularly important to explore the discrepancy between a claimed DAMA signal, and limits from CDMS, Edelweis, and ZEPLIN-I. Such halo uncertainties alone do not seem sufficient to obviate this discrepancy. Finally I will discuss what requirements exist so that future directional detection experiments might allow a WIMP signal to be distinguished from other backgrounds, including a new analysis of 3D vs 2D directional sensitivity.
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