HEPData Search

The production of strange baryons ine+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 forΛ0 andΞ− production and an upper limit has been placed upon the production rate of Σ*±(1385). We measure theΛ0 multiplicity per event to be$\begin{gathered}\hfill \\0.218_{ - 0.011}^{ + 0.011}\pm 0.021 \hfill \\ \end{gathered} $ and$0.256_{ - 0.029}^{ + 0.030}\pm 0.025$ at$\sqrt s=34.8$ and 42.1 GeV respectively. The Ξ− multiplicity per event is found to be$0.014_{ - 0.003}^{ + 0.003}\pm 0.004$ at$\sqrt s=34.8 GeV$. An investigation has been made of the extent to whichΛ0 are produced in pairs. TheΛ0 cross-section has been studied as a function of event sphericity.

24 data tables

Table 1

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