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Abstract
The production of $K^0_S$ and š¬ hadrons is studied in šā¢š collision data at $\sqrt{s}=0.9$ and 7Ā TeV collected with the ATLAS detector at the LHC using a minimum-bias trigger. The observed distributions of transverse momentum, rapidity, and multiplicity are corrected to hadron level in a model-independent way within well-defined phase-space regions. The distribution of the production ratio of $\overline{š¬}$ to š¬ baryons is also measured. The results are compared with various MonteĀ Carlo simulation models. Although most of these models agree with data to within 15% in the $K^0_S$ distributions, substantial disagreements are found in the š¬ distributions of transverse momentum.