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Phys. Rev. Lett. 35, 487–490 (1975)

Evidence for Detection of a Moving Magnetic Monopole

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P. B. Price* and E. K. Shirk*
Physics Department, University of California, Berkeley, California 94720

W. Z. Osborne† and L. S. Pinsky
Physics Department, University of Houston, Houston, Texas 77004

Received 4 August 1975; published in the issue dated 25 August 1975

A very heavy particle passed through a balloon-borne stack of Cherenkov film, emulsion, and Lexan sheets. In 33 Lexan sheets it produced tracks expected of either a nucleus with 125≲Z≲137 and β≲0.92 or a magnetic monopole with g=137e. Its track structure in emulsion indicated it was moving downward with β=0.5-0.05+0.1 and was either a nucleus with Z≈80 or a monopole with g=137e. These facts strongly favor identification of the particle as a magnetic monopole of strength g=137e and mass >200mp.

© 1975 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.35.487
DOI:
10.1103/PhysRevLett.35.487
PACS:

*Work supported by National Aeronautics and Space Administration Grant No. NGR 05-003-376 and U. S. Energy Research and Development Administration Contract No. AT (04-3)-34.

†Work supported by National Aeronautics and Space Administration Grant No. NGR 44-005-041.

See Also

Comment: M. W. Friedlander, Comments on the Reported Observation of a Monopole, Phys. Rev. Lett. 35, 1167 (1975).

Comment: E. V. Hungerford, Comment on the Observation of a Moving Magnetic Monopole, Phys. Rev. Lett. 35, 1303 (1975).

Comment: John M. Cornwall and Henry H. Hilton, Relation between Monopole Mass and Primary Monopole Flux, Phys. Rev. Lett. 36, 900 (1976).

 
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