Search for slow magnetic monopoles with the NOvA detector on the surface
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2021
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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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ACERO, M. A. et al. Search for slow magnetic monopoles with the NOvA detector on the surface. Physical Review D, Washington, v. 103, n. 1, e012007, 2021. DOI: 10.1103/PhysRevD.103.012007. Disponível em: https://journals.aps.org/prd/abstract/10.1103/PhysRevD.103.012007. Acesso em: 16 maio 2023.