Search for grand unification monopoles and other ionizing heavy particles using a scintillation detector at the Earth's surface

Details Search for grand unification monopoles and other ionizing heavy particles using a scintillation detector at the Earth's surface Search for grand unification monopoles and other ionizing heavy particles using a scintillation detector at the Earth's surface

Nov 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987phrvd..36.2641b&link_type=abstract

Physical Review D (Particles and Fields), Volume 36, Issue 9, 1 November 1987, pp.2641-2648

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Magnetic Monopoles

Scientific paper

We present results from an experiment using an array of scintillators and time digitizing techniques to search in cosmic rays for grand unification magnetic monopoles and other ionizing heavy particles at the Earth's surface. An upper flux limit of 4.7×10-12 cm-2 sr-1 sec-1 for 2.7×10-4<=β<=5×10-3 (90% C.L.) for such particles having an ionization >=(1/3 of minimum ionizing particles has been obtained. These results do not improve on the limits from underground experiments for heavy monopoles or other particles (M~1016 GeV); however, they provide new flux limits for somewhat lighter particles (M~109 GeV) which cannot penetrate deep underground or come with large zenith angles. Our result implies that such electrically or magnetically charged particles have been excluded as the major component of the dark matter of the Universe.

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