NOvA's 7.5-year search found zero magnetic monopole candidates and sets a 90% confidence upper limit of 8e-16 cm^-2 s^-1 sr^-1 for monopole speeds near 0.001c and masses above 1e9 GeV.
Family Unification, Exotic States and Magnetic Monopoles
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abstract
The embedding in SU(4)xSU(3)xSU(3) of the well studied gauge groups SU(4)xSU(2)xSU(2) and SU(3)xSU(3)xSU(3) naturally leads to family unification as opposed to simple family replication. An inescapable consequence is the predicted existence of (exotic)color singlet states that carry fractional electric charge. The corresponding magnetic monopoles carry multiple Dirac magnetic charge, can be relatively light (\sim 10^{7}-10^{13}GeV), and may be present in the galaxy not far below the Parker bound.
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Timing-Based Search for Magnetic Monopoles with the NOvA Detector on the Surface
NOvA's 7.5-year search found zero magnetic monopole candidates and sets a 90% confidence upper limit of 8e-16 cm^-2 s^-1 sr^-1 for monopole speeds near 0.001c and masses above 1e9 GeV.