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arXiv 0902.2435hep-ph
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$\sqrt{s_{NN}}= 17.3$ GeV中心Pb+Pb碰撞中夸克组合的强子产生

Hadron production by quark combination in central Pb+Pb collisions at $\sqrt{s_{NN}}= 17.3$ GeV

Chang-en Shao, Jun Song, Feng-lan Shao, Qu-bing Xie

摘要:

将QGP强子化的夸克组合机制应用于SPS高能核-核碰撞。本文系统地研究了$\sqrt{s_{NN}}= 17.3$ GeV大部分中心Pb+Pb碰撞中已识别强子的产额、快度和横动量分布。计算结果与NA 49合作组的实验数据吻合较好。本文研究了在高能SPS核-核碰撞中产生的热密夸克物质的纵向、横向集体流和奇异性。发现奇夸克的集体流比轻夸克强,这与RHIC能量下的集体流一致,而奇异度与$\sqrt{s_{NN}}=$ 62.4,130,200 GeV下的一致.

英文摘要:

The quark combination mechanism of QGP hadronization is applied to nucleus-nucleus collisions at top SPS energy. The yields, rapidity and transverse momentum distributions of identified hadrons in most central Pb+Pb collisions at $\sqrt{s_{NN}}= 17.3$ GeV are systematically studied. The calculated results are in agreement with the experimental data from NA49 Collaboration. The longitudinal and transverse collective flows and strangeness of the hot and dense quark matter produced in nucleus-nucleus collisions at top SPS energy are investigated. It is found that the collective flow of strange quarks is stronger than light quarks, which is compatible with that at RHIC energies, and the strangeness is almost the same as those at $\sqrt{s_{NN}}=$ 62.4, 130, 200 GeV.

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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