First measurement of the (Ξ−→∑−γ)/(Ξ−→Λπ−) branching ratio
Biagi, S. F. ; Bourquin, M. ; Brown, R. M. ; Burckhart, H. J. ; Doré, Ch. ; Extermann, P. ; Gailloud, M. ; Gee, C. N. P. ; Gibson, W. M. ; Gray, R. J. ; Jacot-Guillarmod, P. ; Jeffreys, P. W. ; Louis, W. C. ; Mühlemann, P. ; Owen, R. C. ; Perrier, J. ; Ragan, K. J. S. ; Rosselet, Ph. ; Saunders, B. J. ; Schirato, P. ; Siebert, H. W. ; Smith, V. J. ; Streit, K. -P. ; Thresher, J. J. ; Weill, R.
Springer
Published 1987
Springer
Published 1987
| ISSN: |
1434-6052
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| Source: |
Springer Online Journal Archives 1860-2000
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| Topics: |
Physics
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| Notes: |
Abstract In an experiment performed at the CERN SPS charged hyperon beam, we have observed the radiative decay Ξ−→∑−γ. From a sample of 11 candidates, containing an estimated background of 1.6 events, the branching ratio is found to be: $$\Gamma (\Xi ^ - \to \Sigma ^ - \gamma )/(\Xi ^ - \to \Lambda \pi ^ - ) = (2.3 \pm 1.0) \times 10^{ - 4} .$$
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| Type of Medium: |
Electronic Resource
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| URL: |