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    Multi-strange baryon production at mid-rapidity in Pb–Pb collisions at √sNN = 2.76 TeV.

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    Authors
    ALICE Collaboration
    Barnby, Lee cc
    Affiliation
    University of Birmingham
    Issue Date
    2013-11-26
    
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    Abstract
    The production of − and − baryons and their anti-particles in Pb–Pb collisions at √sNN = 2.76 TeV has been measured using the ALICE detector. The transverse momentum spectra at mid-rapidity (|y| < 0.5) for charged and 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 those at RHIC: they rise smoothly with centrality up to Npart ∼ 150 and saturate thereafter. The enhancements (yields per participant nucleon relative to those in pp collisions) increase both with the strangeness content of the baryon and with centrality, but are less pronounced than at lower energies.
    Citation
    ALICE Collaboration (2014) 'Multi-strange baryon produc Vol 728, pp. 216-227.
    Publisher
    Elsevier
    Journal
    Physics Letters B
    URI
    http://hdl.handle.net/10545/622434
    DOI
    10.1016/j.physletb.2013.11.048
    Additional Links
    https://doi.org/10.1016/j.physletb.2013.11.048
    Type
    Article
    Language
    en
    ISSN
    03702693
    ae974a485f413a2113503eed53cd6c53
    10.1016/j.physletb.2013.11.048
    Scopus Count
    Collections
    Department of Electronics, Computing & Maths

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