New Constraints on Spin-Dependent WIMP-Neutron Interactions from HDMS with Natural Ge and 73Ge

Details New Constraints on Spin-Dependent WIMP-Neutron Interactions from HDMS with Natural Ge and 73Ge New Constraints on Spin-Dependent WIMP-Neutron Interactions from HDMS with Natural Ge and 73Ge

Apr 2008

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008dmap.conf...42k&link_type=abstract

DARK MATTER IN ASTROPARTICLE AND PARTICLE PHYSICS. Proceedings of the 6th International Heidelberg Conference. Held 24-28 Septem

Physics

Scientific paper

In the mixed spin-scalar coupling approach the data from both HDMS (Heidelberg dark matter search) experiments performed in the years 1996, 1997, 2001-2003, with natural Ge and with enriched 73Ge were simultaneously analyzed. This analysis together with a new procedure for background identification and subtraction from the measured 73Ge spectrum allowed us to obtain a significant (about one order of magnitude) improvement for the limits on the WIMP-neutron spin-dependent coupling. As a result the HDMS experiment is now giving the most sensitive limits on the WIMP-neutron spin coupling for WIMP masses larger than 60-65 GeV/c2.

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