New limit on magnetic monopole flux

J. Bartelt, H. Courant, K. Heller, T. Joyce, M. Marshak, E. Peterson, K. Ruddick, M. Shupe, D. S. Ayres, J. W. Dawson, T. H. Fields, E. N. May, L. E. Price

Research output: Contribution to journalArticlepeer-review

35 Scopus citations

Abstract

The underground Soudan-1 nucleon decay experiment can measure the velocities of slowly moving particles if they can be detected by ionization at a level 0.5 times that of a relativistic muon. Magnetic monopoles predicted by grand unified theories should satisfy this condition if their velocities are greater than 10-3c. During a live time of 0.41 yr, no candidate has been observed, implying a 90%-confidence-level limit on the flux of such objects of <4.1×10-13 cm-2 sr-1 s-1 for velocities between 10-3c and 10-2c.

Original languageEnglish (US)
Pages (from-to)655-658
Number of pages4
JournalPhysical review letters
Volume50
Issue number9
DOIs
StatePublished - 1983
Externally publishedYes

ASJC Scopus subject areas

  • General Physics and Astronomy

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