On the Cosmic Ray Muon Hypothesis for DAMA
  The DAMA dark matter search experiment observes a statistically significant percent-level variation of its low-energy count rate with a period of one year. In this note we recall some of the arguments which challenge the hypothesis that the cosmic ray induced underground muon flux can be the origin of the modulation. In addition, we provide new comments on recent works on this subject. 
Josef Pradler
hep-ph astro-ph.HE