Search for the QCD Critical Point in High Energy Nuclear Collisions: A Status Report
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arXiv
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| Format: | Preprint |
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2026
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| _version_ | 1866908961017430016 |
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| author | Zhang, Yu Wang, Zhaohui Luo, Xiaofeng Xu, Nu |
| author_facet | Zhang, Yu Wang, Zhaohui Luo, Xiaofeng Xu, Nu |
| contents | We review recent results of net-proton multiplicity fluctuations from STAR experiment, aiming to locate the QCD critical point in high-energy nuclear collisions at RHIC. We show net-proton number cumulant and proton number factorial cumulant ratios up to fourth order using experimental data from RHIC BES-II Au+Au collisions in collider mode and fixed-target mode. The comparison is made between experimental data and non-critical model calculations from Lattice QCD, HRG, hydrodynamic simulations and transport model UrQMD. In addition, we discuss initial volume fluctuation effect, which plays significant role in fixed-target energies. Finally, an outlook on experimental research on the QCD critical point in future experiments will be presented. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2602_08356 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Search for the QCD Critical Point in High Energy Nuclear Collisions: A Status Report Zhang, Yu Wang, Zhaohui Luo, Xiaofeng Xu, Nu Nuclear Experiment High Energy Physics - Experiment High Energy Physics - Lattice High Energy Physics - Theory Nuclear Theory We review recent results of net-proton multiplicity fluctuations from STAR experiment, aiming to locate the QCD critical point in high-energy nuclear collisions at RHIC. We show net-proton number cumulant and proton number factorial cumulant ratios up to fourth order using experimental data from RHIC BES-II Au+Au collisions in collider mode and fixed-target mode. The comparison is made between experimental data and non-critical model calculations from Lattice QCD, HRG, hydrodynamic simulations and transport model UrQMD. In addition, we discuss initial volume fluctuation effect, which plays significant role in fixed-target energies. Finally, an outlook on experimental research on the QCD critical point in future experiments will be presented. |
| title | Search for the QCD Critical Point in High Energy Nuclear Collisions: A Status Report |
| topic | Nuclear Experiment High Energy Physics - Experiment High Energy Physics - Lattice High Energy Physics - Theory Nuclear Theory |
| url | https://arxiv.org/abs/2602.08356 |