Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2010-06-28
Physics
High Energy Physics
High Energy Physics - Phenomenology
Scientific paper
Many experiments seek dark matter by detecting relatively low energy nuclear recoils. Yet since events from ordinary physics with energies in the 1-100 KeV range are commonplace, all claims of signals or their absence hinge on exhaustive calibrations and background rejection. We document many curious and consistent discrepancies between the backgrounds which neutrons can produce versus the picture of neutrons and claims of neutron calibration found in dark matter literature. Much of the actual physics of neutrons is either under-recognized or under-reported, opening up new interpretations of current data. All signals seen so far, including those presented tentatively such as CoGENT, or the bold claims and time dependence of DAMA/LIBRA, appear to be consistent with neutron-induced backgrounds. At the same time it is the burden of proof of experimental groups to support their claims no possible background could matter, not ours. The existing hypotheses about backgrounds stated by experiments, accepted at face value and as published, make possible a variety of neutron-induced events to be registered as dark matter signals.
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