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Hadron freeze-out conditions in high energy nuclear collisions

Nu Xu·Masashi Kaneta
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Abstract

Systematic trend of the hadron freeze-out conditions from AGS/SPS to RHIC is discussed. The most interesting results from collisions at RHIC are that the system is indeed approaching net-baryon free and the transverse expansion is much stronger than that from collisions at AGS/SPS energies. In order to understand the trend of the collective velocity, an energy scan between $\sqrt{s_{NN}} = 20 - 200 GeV, is important. In addition, systematic studies on the anisotropy parameter $v_2$ and the transverse momentum distributions of $ϕ, Ω,$ and $J / ψ$ are necessary as they will help in determining whether the collectivity is developed at the partonic stage.

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Nu Xu, Masashi Kaneta. 2001-04-23. Hadron freeze-out conditions in high energy nuclear collisions. https://doi.org/10.1016/s0375-9474(01)01377-x

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