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First Dark Matter Search Results from a Surface Run of the 10-L DMTPC Directional Dark Matter Detector
Steven Ahlen ; James B. R. Battat ; Thomas Caldwell ; Cosmin Deaconu ; Denis Dujmic ; William Fedus ; Peter Fisher ; Frank Golub ; Shawn Henderson ; Andrew Inglis ; Asher Kaboth ; Gordon Kohse ; Richard Lanza ; Albert Lee ; Jeremy Lopez ; Jocelyn Monroe ; Timur Sahin ; Gabriella Sciolla ; Nikolai Skvorodnev ; Hidefumi Tomita ; Hermann Wellenstein ; Ian Wolfe ; Richard Yamamoto ; Hayk Yegoryan ;
Date:	15 Jun 2010
Abstract:	The Dark Matter Time Projection Chamber (DMTPC) is a low pressure (75 Torr CF4) 10 liter detector capable of measuring the vector direction of nuclear recoils with the goal of directional dark matter detection. In this paper we present the first dark matter limit from DMTPC. 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.
Source:	arXiv, 1006.2928
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