| First Dark Matter Search Results from a Surface Run of the 10-L DMTPC Directional Dark Matter Detector. |
| Submitted on 15 June 2010 (v1), last revised 16 June 2010 (this version, v2 |
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The Dark Matter Time Projection Chamber |
In an analysis window of 80-200 keV recoil energy, based on a 35.7 g-day exposure, we set a 90% C.L. upper limit on the spin-dependent WIMP-proton cross section of 2.0 x 10^{-33} cm^{2} for 115 GeV/c^2 dark matter particle mass. |
