Abstract
The production cross sections for the Λ, Σ0, Ξ−, Σ0 (1385), Ξ0 (1530) and Ω− hyperons have been measured, both in the continuum and in direct ϒ decays. Baryon rates in direct ϒ decays are enhanced by a factor of 2.5 or more compared to the continuum. Such a large baryon enhancement cannot be explained by standard fragmentation models. The strangeness suppression for baryons and mesons turns out to be the same. A strong suppression of spin 3/2 states is observed.
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Supported by the German Bundesministerium für Forschung und Technologie, under the contract number 054 DO 51 P
Supported by the German Bundesministerium für Forschung und Technologie, under the contract number 054 HD 24 P
Supported by the Natural Sciences and Engineering Research Council, Canada
Supported by the U.S. National Science Foundation
Supported by Raziskovalna skupnost Slovenije and the Internationales Büro KfA, Jülich
Supported by the Swedish Research Council
Supported by the U.S. Department of Energy, under contract DE-AS09-80ER10690
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ARGUS Collaboration., Albrecht, H., Böckmann, P. et al. Hyperon production ine + e −-annihilation at 10 GeV center of mass energy. Z. Phys. C - Particles and Fields 39, 177–186 (1988). https://doi.org/10.1007/BF01550992
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DOI: https://doi.org/10.1007/BF01550992