Abstract

The production yields and the directed flow of the neutral strange particles K0S and Λ(Λ0 + Σ0) have been measured with the FOPI detector at SIS/GSI in Ni+Ni collisions of 1.93 A GeV energy. For the K0, the distributions of the inverse slope parameter and the particle yield show good agreement with the results of previous K+ measurements. Furthermore, the directed flow patterns of K0 and K+ are found to be compatible. The comparison of Λ and proton exhibits a significant difference in the yield distribution whereas both particle species show the same flow behaviour.

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