Limits on Spin-Independent Interactions of Weakly Interacting Massive Particles with Nucleons from the Two-Tower Run of the Cryogenic Dark Matter Search

2005/09/09 by CDMS Collaboration, D. S. Akerib, M. J. Attisha +53 · 2 citations
Physics and Astronomy · #Astrophysics #Cosmology #Cosmology and Gravitation Theories #Dark Matter and Cosmic Phenomena #Dark matter #Meson #Nuclear physics #Nucleon #Particle physics #Particle physics theoretical and experimental studies #Physics #Recoil #Scalar field dark matter #Spin (aerodynamics) #WIMP #Weakly interacting massive particles #astro-ph #hep-ex #nucl-ex

paper · pdf · doi:10.1103/physrevlett.96.011302

published as Phys.Rev.Lett.96:011302,2006 · 4 pages, 4 figures, submitted to Phys. Rev. Lett

arxiv created 2005/09/09 · openalex publication_date 2006/01/03 · arxiv updated 2012/08/27 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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\ifmmode×\else\texttimes\fi10^\ensuremath-43 cm² from Ge and 3\ifmmode×\else\texttimes\fi10^\ensuremath-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.

Citations

• Exclusion limits on the WIMP-nucleon cross section from the first run of the Cryogenic Dark Matter Search in the Soudan Underground Laboratory
• Review of mathematics, numerical factors, and corrections for dark matter experiments based on elastic nuclear recoil
• Compatibility of DAMA dark matter detection with other searches
• Particle dark matter: evidence, candidates and constraints
• Strong‐Lensing Analysis of A1689 from Deep Advanced Camera Images
• First‐Year Wilkinson Microwave Anisotropy Probe ( WMAP ) Observations: Determination of Cosmological Parameters
• First Results from the Cryogenic Dark Matter Search in the Soudan Underground Laboratory

Cited by

• Interplay between collider searches for supersymmetric Higgs bosons and direct dark matter experiments
• Model-independent form factors for spin-independent neutralino–nucleon scattering from elastic electron scattering data