Files
Abstract
The production of $K^0_S$ and 𝛬 hadrons is studied in 𝑝𝑝 collision data at $\sqrt{s}=0.9$ and 7 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 $\overline{𝛬}$ to 𝛬 baryons is also measured. The results are compared with various Monte 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 𝛬 distributions of transverse momentum.