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تسجيل مستخدم جديدResults from the CDMS 5-Tower Operation
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Jonghee Yoo
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Astrophysical observations strongly suggest that non-luminous, nonbaryonic components, so called Dark Matter, may constitute most of the matter in the Universe. The Cryogenic Dark Matter Search (CDMS) experiment is designed to detect Dark Matter interaction events through nuclear recoils from elastic scattering. The detector is capable of reading out both phonon and ionization energy of an interaction in Ge or Si crystals. We present results from the CDMS five-tower detector arrays. The data were collected in the period between October 2006 and July 2007 (with an effective exposure of 121.3 kg-days). No WIMP signal was observed. The results, when combined with previous CDMS Soudan data, set a 90% confidence level upper bound on the WIMP-nucleon cross section of $4.6times 10^{-44}$ cm$^2$ at 60 Gev/c$^2$ WIMP mass.
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