Power-Spectrum Analysis of Reconstructed DAMA Data
  Claims by the DAMA (DArk MAtter) collaboration to have detected an annually
varying signal consistent with models of dark matter appear to be at variance
with results from other dark-matter searches. To further understand the DAMA
results, we have carried out an independent analysis of DAMA data reconstructed
from published figures. In addition to reexamining the Lomb-Scargle and
chi-square analyses previously carried out by the DAMA collaboration, we carry
out two new likelihood analyses and a new chi-square analysis, focusing
attention on the treatment of experimental errors and binning. We confirm the
existence of an annual oscillation, with a maximum in early June, but at a
lower significance level than previously reported.
