Abstract
We report selected results from the first phase of the beam energy scan program (BES-I) at RHIC. During the BES-I program we have collected data from Au\(+\)Au collisions at the center of mass energy range from \(\sqrt{s_{NN}}=7.7\) to 200 GeV, corresponding to baryonic chemical potential of \(\mu _B\approx \) 420 MeV to 20 MeV, respectively.
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Notes
- 1.
In high-energy nuclear collisions at LHC \(\sqrt{s_{NN}}= 2.76 - 5.02\) TeV and at RHIC \(\sqrt{s_{NN}}= 200\) GeV, the values of baryonic chemical potential are found to be \(\mu _B \sim 0\) and 25 MeV, respectively. All are much smaller than that of the transition temperature \(T \approx 155\) MeV [2].
- 2.
In high-energy nuclear collisions, due to the finite sizes and finite evolution time, precisely speaking there is no critical point but rather a critical region. All experimental efforts should look for the critical ‘region’ [3].
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Acknowledgements
I thank Drs. P. Braun-Munzinger, V. Koch, X.F. Luo, B. Mohanty, J. Stroth and J. Xu, for inspiring discussions. This work was supported in part by the China MoST No.2015CB856901 and US DE-AC03-76SF00098.
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Xu, N. (2018). Exploration of the QCD Phase Diagram at Finite Baryon Density Region: Recent Results from RHIC Beam Energy Scan-I. In: Naimuddin, M. (eds) XXII DAE High Energy Physics Symposium . Springer Proceedings in Physics, vol 203. Springer, Cham. https://doi.org/10.1007/978-3-319-73171-1_1
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