Helium-3 production from Pb+Pb collisions at SPS energies with the UrQMD model and the traditional coalescence afterburner

Abstract

A potential version of the UrQMD (UrQMD/M) transport model and a traditional coalescence model are combined to calculate the production of ${}^3$He fragments in central Pb+Pb collisions at SPS energies 20-80 GeV/nucleon. It is found that the Lorentz transformation in the afterburner influences visibly the ${}^3$He yield and should be considered in calculations. The rapidity distribution of ${}^3$He multiplicities (including the concave shape) can be described well with UrQMD/M when it stops during t${}_{\mathrm{cut}}$=100$\pm$25 fm$/c$ and the coalescence afterburner with one parameter set of ($R_0$,$P_0$)=(3.8 fm, 0.3 GeV$/$c) is taken into use afterwards.

9 pages, 3 figures

References in corpus (6)

• The effect of "pre-formed" hadron potentials on the dynamics of heavy ion collisions and the HBT puzzle
• Examination of scaling of Hanbury-Brown--Twiss radii with charged particle multiplicity
• UrQMD calculations of two-pion HBT correlations in central Pb-Pb collisions at $\sqrt{s_{NN}}=2.76$ TeV
• ${}^3$H/${}^3$He ratio as a probe of the nuclear symmetry energy at sub-saturation densities
• Transport model study of the $m_T$-scaling for $\Lambda$, K, and $\pi$ HBT-correlations
• Rapidity distribution of protons from the potential version of UrQMD model and the traditional coalescence afterburner

Cited by in corpus (7)

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• Effects of sequential decay on collective flows and nuclear stopping power in heavy-ion collisions at intermediate energies
• Proton correlations and apparent intermittency in the UrQMD model with hadronic potentials
• The effect of Lorentz-like force on collective flows of K${}^{+}$ in Au+Au collisions at 1.5 GeV/nucleon}{The effect of Lorentz-like force on collective flows of $K^{+}$ in Au+Au collisions at 1.5 GeV/nucleon
• The cumulants of the baryon number from central Au+Au collision at $E_{lab}$= 1.23 GeV$/$nucleon reveal the nuclear mean-field potentials
• Study of production of (anti)deuteron observed in Au+Au collisions at $\sqrt{S_{NN}}$=14.5, 62.4 and 200 GeV