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APS » Journals » Phys. Rev. Lett. » Volume 43 » Issue 6
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Phys. Rev. Lett. 43, 410–413 (1979)

Observation of Prompt Single-Muon Production by 400-GeV Protons

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K. W. Brown, B. C. Barish, J. F. Bartlett*, A. Bodek†, M. H. Shaevitz, and E. J. Siskind
California Institute of Technology, Pasadena, California 91125

A. M. Diamant-Berger‡, J. P. Dishaw, M. Faessler§, J. K. Liu**, F. S. Merritt, and S. G. Wojcicki
Stanford University, Stanford, California 94305

Received 21 May 1979; published in the issue dated 6 August 1979

We have observed a prompt single-muon signal in the region 0.8<pt<2.5 GeV/c produced by the interactions of 400-GeV protons in steel. The prompt 1-μ+ rate is comparable in magnitude to the prompt 2-μ rate in the same kinematic region. If interpreted as originating from the production and muon decay of charmed particles, the 1-μ signal corresponds to a charm production cross section in the range of 13 to 60 μb/nucleon, depending on production parameters.

© 1979 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevLett.43.410
DOI:
10.1103/PhysRevLett.43.410
PACS:

*Present address: Fermilab, Batavia, Ill. 60510.

†Present address: University of Rochester, Rochester, N. Y. 14627.

‡Present address: Département de Physique des Particules Elémentaires, Saclay, France.

§Present address: CERN, Geneva, Switzerland.

**Present address: Global Union Bank, Wall Street Plaza, New York, N. Y. 10005.

 
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