First Results of the Phase II SIMPLE Dark Matter Search

Details First Results of the Phase II SIMPLE Dark Matter Search First Results of the Phase II SIMPLE Dark Matter Search

2010-03-15

arxiv.org/abs/1003.2987v4

Phys.Rev.Lett.105:211301,2010

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

4 pages, 4 figures; PRL-accepted version with corrected SI contour (Fig. 4)

Scientific paper

10.1103/PhysRevLett.105.211301

We report results of a 14.1 kgd measurement with 15 superheated droplet detectors of total active mass 0.208 kg, comprising the first stage of a 30 kgd Phase II experiment. In combination with the results of the neutron-spin sensitive XENON10 experiment, these results yield a limit of |a_p| < 0.32 for M_W = 50 GeV/c2 on the spin-dependent sector of weakly interacting massive particle-nucleus interactions with a 50% reduction in the previously allowed region of the phase space formerly defined by XENON, KIMS and PICASSO. In the spin-independent sector, a limit of 2.3x10-5 pb at M_W = 45 GeV/c2 is obtained.

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