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arXiv 2212.10568nucl-thhep-exnucl-ex
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重子数输运、奇异性守恒和$Ω$ -强子关联

Baryon Number Transport, Strangeness Conservation and $Ω$-hadron Correlations

Xiatong Wu, Weijie Dong, Xiaozhou Yu, Hui Li, Gang Wang, Huan Zhong Huang, Zi-Wei Lin

摘要:

虽然奇异夸克是在$s\bar{s}$对中产生的,但在较低RHIC能量的重离子碰撞中,$Ω^{-}$与${\barΩ}^{+}$的比率大于1。因此,产生的$Ω$超子必须携带来自碰撞核的净重子量子数。我们给出了在$\sqrt{s_{NN}}$ = 14.6 GeV的Au+Au碰撞的AMPT模型模拟的$K$ - $Ω$关联的结果,以探测在该束能量下重子数输运到中等快度的动力学。我们使用默认和弦熔化的版本来说明如何强子化方案的夸克聚结和弦碎裂可以留下这样的相关性的印记。这些相关性的测量与在RHIC的STAR实验的影响也将进行讨论。

英文摘要:

Although strange quarks are produced in $s\bar{s}$ pairs, the ratio of $Ω^{-}$ to ${\barΩ}^{+}$ is greater than one in heavy-ion collisions at lower RHIC energies. Thus the produced $Ω$ hyperons must carry net baryon quantum numbers from the colliding nuclei. We present results of $K$-$Ω$ correlations from AMPT model simulations of Au+Au collisions at $\sqrt{s_{NN}}$ = 14.6 GeV, to probe dynamics for baryon number transport to mid-rapidities at this beam energy. We use both the default and string-melting versions to illustrate how hadronization schemes of quark coalescence and string fragmentations could leave imprints on such correlations. Implications on the measurements of these correlations with the STAR experiment at RHIC will also be discussed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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