Laboratory limits on Galactic cold dark matter

Details Laboratory limits on Galactic cold dark matter Laboratory limits on Galactic cold dark matter

Aug 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988phrvl..61..510c&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 61, Aug. 1, 1988, p. 510-513. DOE-supported research.

Astronomy and Astrophysics

Astronomy

194

Astronomical Models, Cosmology, Dark Matter, Galactic Mass, Electron Radiation, Galactic Evolution, Germanium, Halos, Neutrinos

Scientific paper

Interesting limits are set on candidates for cold-dark matter particles in the halo of the Galaxy from their interaction with a very-low-background Ge detector used to search for double-beta decay. Dirac neutrinos constituting all of dark matter are excluded for masses between 12 GeV/c-squared and 1.4 TeV/c-squared. There are slightly better limits on magninos and cosmions, proposed massive particles which also explain the solar-neutrino problem but which interact more strongly with Ge. In addition, millicharged shadow matter is ruled out as the main form of dark matter.

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