First observation ofΩ * resonances
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. ; Modis, T. ; Owen, R. C. ; Perrier, J. ; Ragan, K. J. ; Rosselet, Ph. ; Saunders, B. J. ; Schirato, P. ; Siebert, H. W. ; Smith, V. J. ; Streit, K. P. ; Thresher, J. J. ; Weill, R. ; Wood, A. T.
Springer
Published 1986
Springer
Published 1986
| 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 a experiment at the CERN SPS charged hyperon beam using incident Ξ−, we have obtained evidence for the production of two Ω* resonances decaying into Ξ−π+ K −, with the following parameters:M 1=2251±12,Γ 1=48±20 MeV/c2, 78 ±23 events, andM 2=2284±12,Γ 2=26±23 MeV/c2 45±10 events. The first state is also observed as a 4.2σ effect in a subsample which contains an additionalK + orK 0 in the final state. Production cross sections and branching ratios to Ξ* K − and Ξ− K * are presented.
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| Type of Medium: |
Electronic Resource
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| URL: |