A Search for a Dark Matter produced Sidereal dependant stopping Muon rate

Details A Search for a Dark Matter produced Sidereal dependant stopping Muon rate A Search for a Dark Matter produced Sidereal dependant stopping Muon rate

Oct 1999

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1999aps..4cf..bb12y&link_type=abstract

American Physical Society, Four Corners Section Fall Meeting, October 1-2, 1999 The University of Arizona Tucson, AZ, abstract #

Physics

Scientific paper

In several 1960's experiments Clyde Cowan's group observed mu-e-decay events with a sharp, statistically-significant intensity peak near 21hrLST. The mu-e-decay detectors were omnidirectional, but the response would be strongly peaked at the zenith if the atmosphere highly attenuated the primary particles. If galactic dark matter (DM) includes a nonrotating, strongly-interacting component (SIMPs), it would arrive at Earth as a highly directional "wind," peaking at 21hrLST- -a huge Compton-Getting Effect for DM v \over c ~ 10-3. Current data puts an excess at 21hr LST (presently 4.8 σ) in high altitude Arizona stopping muon experiments. A dark-matter (DM) hypothesis is proposed to explain the excess and a model presented in which the slowly-moving, neutral SIMPs are captured by N and O nuclei, emitting at least one pion or kaon which decays into a muon.

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