Search for supermassive relics with a 2000-m2 array of plastic track detectors

Details Search for supermassive relics with a 2000-m2 array of plastic track detectors Search for supermassive relics with a 2000-m2 array of plastic track detectors

Apr 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991phrvl..66.1951o&link_type=abstract

Physical Review Letters (ISSN 0031-9007), vol. 66, April 15, 1991, p. 1951-1954. MOESC-supported research.

Physics

45

Charged Particles, Electric Charge, Grand Unified Theory, Magnetic Monopoles, String Theory, Monomers, Photons

Scientific paper

A direct search has been made for supermassive relics (heavier than about 10 to the 12th GeV/c-squared) with a 2000-sq m array of CR-39 track-etch detectors deployed underground for 2.1 yr. The nonobservation of penetrating tracks places a new upper limit for the velocity-dependent flux at 3.2 x 10 to the -16th/sq cm sec sr for magnetic monopoles carrying various magnetic charges, for electrically charged relics, and for strange matter. This flux limit corresponds to a limit on the relic abundance of order n(x)/n(gamma) = 10 to the -29th relative to the 3-K photons.

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