Analysis of the low-energy electron-recoil spectrum of the CDMS experiment
作者： Z Ahmed , DS Akerib , S Arrenberg , CN Bailey , D Balakishiyeva
DOI: 10.1103/PHYSREVD.81.042002
关键词:
摘要: We report on the analysis of low-energy electron-recoil spectrum from CDMS II experiment using data with an exposure 443.2 kg-days. The provides details observed counting rate and possible background sources in energy range 2–8.5 keV. find no significant excess a peaked contribution to total above model, compare this observation recent DAMA results. In framework conversion dark matter particle into electromagnetic energy, our 90% confidence level upper limit 0.246 events/kg/day at 3.15 keV is lower than by DAMA. absence any specific physics model provide scaling cross section between NaI Ge, we assume Z2 scaling. With assumption remains higher CDMS. Under conservative that modulation amplitude 6% obtain limits factor ~2 DAMA, constraining some interpretations modulation.
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