Flux limits for high energy cosmic photinos from underground experiments

Details Flux limits for high energy cosmic photinos from underground experiments Flux limits for high energy cosmic photinos from underground experiments

Mar 1989

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989phlb..219..521f&link_type=abstract

Physics Letters B, Volume 219, Issue 4, p. 521-528.

Physics

1

Scientific paper

Underground experiments, which detect the interactions of atmospheric neutrinos, could also be sensitive to photinos. Using data from the Fréjus and Kamiokande detectors we give upper limits on the possible flux of high-energy relativistic photinos incident on the Earth, as functions of the squark or selectron masses. These limits improve considerably the existing ones, by four to nine orders of magnitude or more, especially for very energetic photinos. Although not yet very constraining, they may be used to eliminate the possibility that high-energy cosmic photinos could contribute significantly to the energy density of the Universe.
Laboratoire Propre du Centre National de la Recherche Scientifique, associé à l'École Normale Supérieure et à l'Université de Paris-Sud.

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