Aero, M.A. and Adamson, P. and Aliaga, L. and Giri, Anjan Kumar et. al.
(2021)
Search for slow magnetic monopoles with the NOvA detector on the surface.
Physical Review D, 103 (1).
ISSN 2470-0010
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Abstract
We report a search for a magnetic monopole component of the cosmic-ray flux in a 95-day exposure of the NOvA experiment's Far Detector, a 14 kt segmented liquid scintillator detector designed primarily to observe GeV-scale electron neutrinos. No events consistent with monopoles were observed, setting an upper limit on the flux of 2×10-14 cm-2 s-1 sr-1 at 90% C.L. for monopole speed 6×10-4<β<5×10-3 and mass greater than 5×108 GeV. Because of NOvA's small overburden of 3 meters-water equivalent, this constraint covers a previously unexplored low-mass region.
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