Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2011-06-30
J. Phys. G: Nucl. Part. Phys. 38 124079 (2011)
Physics
High Energy Physics
High Energy Physics - Experiment
4 pages, 3 figures. Submitted to the Proceedings of QM2011
Scientific paper
10.1088/0954-3899/38/12/124079
The production of charged multi-strange particles is studied with the ALICE experiment at the CERN LHC. Measurements of the central rapidity yields of $\Xi^-$ and $\Omega^-$ baryons, as well as their antiparticles, are presented as a function of transverse momentum ($p_\mathrm{t}$) for inelastic pp collisions at $\sqrt{s}=7$ TeV and compared to existing measurements performed at the same and/or at lower energies. The results are also compared to predictions from two different tunes of the PYTHIA event generator. We find that data significantly exceed the production rates from those models. Finally, we present the status of the multi-strange particle production studies in Pb-Pb at $\sqrt{s_{NN}}=2.76$ TeV performed as a function of collision centrality.
Chinellato David D.
for the ALICE Collaboration
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