Lambda-Lambda Correlation in Relativistic Heavy Ion Collisions

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Abstract

We investigate Λ − Λ correlation function in relativistic heavy ion collisions to extract their interaction. Using an expanding source model for heavy ion collisions, we disentangle effects of collective expansion and those of the interaction at low relative momenta. Then, we discuss the influence of the feed-down correction for Σ⁰ decay and indicate the possible existence of a residual correlation at high relative momenta. Consequently, the present STAR data suggest a weakly attractive interaction for the ΛΛ pairs which is represented by the scattering length, 1/a₀ < −0.8 fm⁻¹.

Resonance Workshop at Catania, Catania, Italy, November 3-7, 2014

Journal

  • EPJ Web of Conferences

    EPJ Web of Conferences (97), 2015-06

    EDP Sciences

Codes

  • NII Article ID (NAID)
    120006654213
  • Text Lang
    ENG
  • Article Type
    conference paper
  • ISSN
    2100-014X
  • Data Source
    IR 
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