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arxiv: 1304.3706 · v3 · submitted 2013-04-12 · 🌌 astro-ph.CO · hep-ex

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Silicon detector results from the first five-tower run of CDMS II

CDMS Collaboration: R. Agnese (18) , Z. Ahmed (1) , A.J. Anderson (4) , S. Arrenberg (20) , D. Balakishiyeva (18) , R. Basu Thakur (2) , D.A. Bauer (2) , A. Borgland (8)
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D. Brandt (8) P.L. Brink (8) T. Bruch (20) R. Bunker (11) B. Cabrera (10) D.O. Caldwell (15) D.G. Cerdeno (13) H. Chagani (19) J. Cooley (9) B. Cornell (1) C.H. Crewdson (6) P. Cushman (19) M. Daal (14) F. Dejongh (2) P.C.F. Di Stefano (6) E. do Couto e Silva (8) T. Doughty (14) L. Esteban (13) S. Fallows (19) E. Figueroa-Feliciano (4) J. Filippini (1) J. Fox (6) M. Fritts (19) G.L. Godfrey (8) S.R. Golwala (1) J. Hall (5) R.H. Harris (12) S.A. Hertel (4) T. Hofer (19) D. Holmgren (2) L. Hsu (2) M.E. Huber (16) A. Jastram (12) O. Kamaev (6) B. Kara (9) M.H. Kelsey (8) A. Kennedy (19) P. Kim (8) M. Kiveni (11) K. Koch (19) M. Kos (11) S.W. Leman (4) E. Lopez-Asamar (13) R. Mahapatra (12) V. Mandic (19) C. Martinez (6) K.A. McCarthy (4) N. Mirabolfathi (14) R.A. Moffatt (10) D.C. Moore (1) P. Nadeau (6) R.H. Nelson (1) K. Page (6) R. Partridge (8) M. Pepin (19) A. Phipps (14) K. Prasad (12) M. Pyle (14) H. Qiu (9) W. Rau (6) P. Redl (10) A. Reisetter (17) Y. Ricci (6) T. Saab (18) B. Sadoulet (14 3) J. Sander (12) K. Schneck (8) R.W. Schnee (11) S. Scorza (9) B. Serfass (14) B. Shank (10) D. Speller (14) K.M. Sundqvist (14) A.N. Villano (19) B. Welliver (18) D.H. Wright (8) S. Yellin (10) J.J. Yen (10) J. Yoo (2) B.A. Young (7) J. Zhan (19) ((1) California Institute of Technology (2) Fermi National Accelerator Laboratory (3) Lawrence Berkeley National Laboratory (4) Massachusetts Institute of Technology (5) Pacific Northwest National Laboratory (6) Queen's University (7) Santa Clara University (8) SLAC National Accelerator Laboratory / Kavli Institute for Particle Astrophysics Cosmology (9) Southern Methodist University (10) Stanford University (11) Syracuse University (12) Texas A & M University (13) Universidad Autonoma de Madrid (14) University of California Berkeley (15) University of California Santa Barbara (16) University of Colorado Denver (17) University of Evansville (18) University of Florida Gainesville (19) University of Minnesota (20) University of Zurich)
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classification 🌌 astro-ph.CO hep-ex
keywords analysiscdmsdatadetectorsexposureresultsdetectorevents
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We report results of a search for Weakly Interacting Massive Particles (WIMPs) with the Si detectors of the CDMS II experiment. This report describes a blind analysis of the first data taken with CDMS II's full complement of detectors in 2006-2007; results from this exposure using the Ge detectors have already been presented. We observed no candidate WIMP-scattering events in an exposure of 55.9 kg-days before analysis cuts, with an expected background of ~1.1 events. The exposure of this analysis is equivalent to 10.3 kg-days over a recoil energy range of 7-100 keV for an ideal Si detector and a WIMP mass of 10 GeV/c2. These data set an upper limit of 1.7x10-41 cm2 on the WIMP-nucleon spin-independent cross section of a 10 GeV/c2 WIMP. These data exclude parameter space for spin-independent WIMP-nucleon elastic scattering that is relevant to recent searches for low-mass WIMPs.

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