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Limits on spin-independent interactions of weakly interacting massive particles with nucleons from the two-tower run of the cryogenic dark matter search | | D S Akerib
; M J Attisha
; C N Bailey
; L Baudis
; D A Bauer
; P L Brink
; P P Brusov
; R Bunker
; B Cabrera
; D O Caldwell
; C L Chang
; J Cooley
; M B Crisler
; P Cushman
; M Daal
; R Dixon
; M R Dragowsky
; D D Driscoll
; L Duong
; R Ferril
; J Filippini
; R J Gaitskell
; S R Golwala
; D R Grant
; R Hennings-Yeomans
; D Holmgren
; M E Huber
; S Kamat
; S Leclercq
; A Lu
; R Mahapatra
; V Mandic
; P Meunier
; N Mirabolfathi
; H Nelson
; R Nelson
; R W Ogburn
; T A Perera
; M Pyle
; E Ramberg
; W Rau
; A Reisetter
; R R Ross
; B Sadoulet
; J Sander
; C Savage
; R W Schnee
; D N Seitz
; B Serfass
; K M Sundqvist
; J-P F Thompson
; G Wang
; S Yellin
; J Yoo
; B A Young
;
; | | Date: |
13 Jan 2006 | | Journal: | Phys Rev Lett, 96 (1), 011302 | | Abstract: | We report new results from the Cryogenic Dark Matter Search (CDMS II) at the Soudan Underground Laboratory. Two towers, each consisting of six detectors, were operated for 74.5 live days, giving spectrum-weighted exposures of 34 (12) kg d for the Ge (Si) targets after cuts, averaged over recoil energies 10-100 keV for a weakly interacting massive particle (WIMP) mass of 60 GeV/c2. A blind analysis was conducted, incorporating improved techniques for rejecting surface events. No WIMP signal exceeding expected backgrounds was observed. When combined with our previous results from Soudan, the 90% C.L. upper limit on the spin-independent WIMP-nucleon cross section is 1.6 x 10(-43) cm2 from Ge and 3 x 10(-42) cm2 from Si, for a WIMP mass of 60 GeV/c2. The combined limit from Ge (Si) is a factor of 2.5 (10) lower than our previous results and constrains predictions of supersymmetric models. | | Source: | PubMed, pmid16486434 | | Services: | Forum | Review | Favorites | |
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