Searching for onset of deconfinement via hypernuclei and baryon-strangeness correlations

S. Zhang; J. H. Chen; H. Crawford; D. Keane; Y. G. Ma; Z. B. Xu

doi:10.1016/j.physletb.2010.01.034

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arXiv · 0908.3357

Searching for onset of deconfinement via hypernuclei and baryon-strangeness correlations

S. Zhang·J. H. Chen·H. Crawford·D. Keane·Y. G. Ma·Z. B. Xu

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Abstract

We argue that the ratio $S_3 =\mathrm{^3_ΛH} / (\mathrm{^3He} \times \fracΛ{p})$ is a good representation of the local correlation between baryon number and strangeness, and therefore is a valuable tool to probe the nature of the dense matter created in high energy heavy-ion collision: quark gluon plasma or hadron gas. A multiphase transport model (AMPT) plus a dynamical coalescence model is used to elucidate our arguments. We find that AMPT with string melting predicts an increase of $S_3$ with increasing beam energy, and is consistent with experimental data, while AMPT with only hadronic scattering results in a low $S_3$ throughout the energy range from AGS to RHIC, and fails to describe the experimental data.

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S. Zhang, J. H. Chen, H. Crawford, D. Keane, Y. G. Ma, Z. B. Xu. 2010-01-16. Searching for onset of deconfinement via hypernuclei and baryon-strangeness correlations. https://doi.org/10.1016/j.physletb.2010.01.034

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