Multi-strange baryon production at mid-rapidity in Pb–Pb collisions at √sNN = 2.76 TeV
- Abelev, B.
- Antičić, Tome
- Gotovac, Sven
- Mudnić, Eugen
- Planinić, Mirko
- Simatović, Goran
- Šuša, Tatjana
- Vicković, Linda
- Zyzak, M.
DOIAbstract
The production of Ξ− and Ω− baryons and their anti-particles in Pb–Pb collisions at View the MathML source has been measured using the ALICE detector. The transverse momentum spectra at mid-rapidity (|y|<0.5) for charged Ξ and Ω hyperons have been studied in the range 0.6<pT<8.0 GeV/c and 1.2<pT<7.0 GeV/c, respectively, and in several centrality intervals (from the most central 0–10% to the most peripheral 60–80% collisions). These spectra have been compared with the predictions of recent hydrodynamic models. In particular, the Kraków and EPOS models give a satisfactory description of the data, with the latter covering a wider pT range. Mid-rapidity yields, integrated over pT, have been determined. The hyperon-to-pion ratios are similar to ...
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