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An experimental physicist who coauthored a CoGeNT experiment search for annual modulation in dark-matter direct detection. A point-contact germanium detector recorded low-energy events over time. The 2011 paper reported evidence for a modulated component whose origin remained unknown, distinguishing a measured time dependence from an established identification of dark matter.^[ref]

An experimental particle physicist who coauthored DAMA/LIBRA studies of annual modulation in dark-matter direct detection. The apparatus measures low-energy events in thallium-doped sodium iodide crystals over successive annual cycles. The collaboration compared the amplitude, period and phase of single-detector events with a dark matter modulation hypothesis; the measured modulation and its physical interpretation are separate questions.^[ref]