Phys. Rev. Lett. 60, 1610–1613 (1988)Search for highly ionizing particles in e+e- annihilations at √s =50–52 GeVReceived 15 January 1988; published in the issue dated 18 April 1988 We report the first result of a search for highly ionizing particles in e+e- annihilations at the KEK storage ring TRISTAN. CR-39 and UG-5 dielectric track detectors were exposed to 4.8 pb-1 integrated luminosity at total energies of 50–52 GeV in the center of mass. This search is sensitive to Dirac magnetic monopoles and yields 95% confidence-level upper limits of 8×10-37 and 1.3×10-35 cm2 on the cross section for production of monopoles with magnetic charges g=68.5e≡gD and g=2gD and respective maximum masses 24.1 and 22.0 GeV/c2. © 1988 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.60.1610
DOI:
10.1103/PhysRevLett.60.1610
PACS:
14.80.Hv, 13.10.+q
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