Freeze-out conditions from strangeness observables at RHIC

Freeze-out conditions from strangeness observables at RHIC
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RHIC 奇异观测值的冻结条件

DOI:
10.1140/epjc/s10052-019-6661-3
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发表时间:
2018
期刊:
The European Physical Journal C
影响因子:
--
通讯作者:
M. Nahrgang
M. Nahrgang
中科院分区:
--
文献类型:
--
作者:
M. Bluhm;M. Nahrgang

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我们确定化学冻结条件下测量的RHIC束能量的奇异可观测量。基于最低阶净K介子涨落和奇异反重子对重子产额比的综合分析,我们得到了明显增强的冻结条件,在高束流能量相比,以前的研究分析净质子和净电荷波动。我们的研究结果与最近的研究(Bellwied et al. in arXiv:1805.00088 [hep-ph],2018)定性一致,该研究利用了净k介子波动数据与晶格QCD的信息相结合。我们的补充方法表明,也奇怪的强子产额比所描述的这种增强的冻结条件。
We determine chemical freeze-out conditions from strangeness observables measured at RHIC beam energies. Based on a combined analysis of lowest-order net-kaon fluctuations and strange anti-baryon over baryon yield ratios we obtain visibly enhanced freeze-out conditions at high beam energies compared to previous studies which analyzed net-proton and net-charge fluctuations. Our findings are in qualitative agreement with the recent study (Bellwied et al. in arXiv:1805.00088 [hep-ph], 2018) which utilizes the net-kaon fluctuation data in combination with information from lattice QCD. Our complementary approach shows that also strange hadron yield ratios are described by such enhanced freeze-out conditions.
DOI: 10.1088/1742-6596/432/1/012012
发表时间: 2011-12
期刊: Journal of Physics: Conference Series
影响因子: --
作者:
S. Borsányi;Z. Fodor;S. Katz;S. Krieg;C. Ratti;K. Szabó
通讯作者: S. Borsányi;Z. Fodor;S. Katz;S. Krieg;C. Ratti;K. Szabó
DOI: 10.1103/physrevd.96.034517
发表时间: 2017-08-23
期刊: PHYSICAL REVIEW D
影响因子: 5
作者:
Alba, Paolo;Bellwied, Rene;Ratti, Claudia
通讯作者: Ratti, Claudia