(Anti -)strangeness production in heavy-ion collisions Conference Paper uri icon

abstract

  • The production and dynamics of strange and antistrange hadrons in heavy-ion reactions from sNN 3 GeV to 200 GeV is analyzed within the Parton-Hadron-String- Dynamics (PHSD) transport model. The PHSD results for strange baryon and antibaryon production are roughly consistent with the experimental data starting from upper SPS energies. Nevertheless, hadronic final state flavor-exchange reactions are important for the actual abundances, in particular at large rapidities where hadronic dynamics, parton fragmentation and string decay dominate. A striking disagreement between the PHSD results and the available data persists, however, for bombarding energies below sNN 8 GeV where the strangeness production is significantly underestimated as in earlier HSD studies. This finding implies that the strangeness enhancement seen experimentally at FAIR/NICA energies cannot be attributed to a deconfinement phase transition or crossover but probably involves the approximate restoration of chiral symmetry in the hadronic phase.

published proceedings

  • 15TH INTERNATIONAL CONFERENCE ON STRANGENESS IN QUARK MATTER (SQM2015)

altmetric score

  • 0.5

author list (cited authors)

  • Moreau, P., Li, F., Ko, C., Cassing, W., & Bratkovskaya, E. L.

citation count

  • 2

complete list of authors

  • Moreau, P||Li, F||Ko, C-M||Cassing, W||Bratkovskaya, EL

publication date

  • January 2016