Strange baryon production in e<sup>+</sup>e<sup>-</sup> annihilation

Braunschweig W, Gerhards R, Kirschfink FJ, Martyn HU, Bock B, Fischer HM, Hartmann H, Hartmann J, Hilger E, Jocksch A, Wedemeyer R, Foster B
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et al

The production of strange baryons in e+e- annihilation has been studied at centre of mass energies of 34.8 GeV and 42.1 GeV, using the TASSO detector at DESY. Inclusive cross-sections have been obtained for Λ0 and Ξ- production and an upper limit has been placed upon the production rate of Σ*±(1385). We measure the Λ0 multiplicity per event to be {Mathematical expression} and {Mathematical expression} at {Mathematical expression} and 42.1 GeV respectively. The Ξ- multiplicity per event is found to be {Mathematical expression} at {Mathematical expression}. An investigation has been made of the extent to which Λ0 are produced in pairs. The Λ0 cross-section has been studied as a function of event sphericity. © 1989 Springer-Verlag.