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arXiv 0901.4078nucl-exhep-ph
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强子和轻子碰撞中的毫微微显微镜:RHIC结果和世界系统学

Femtoscopy in hadron and lepton collisions: RHIC results and world systematics

Zbigniew Chajȩcki

摘要:

在各种设施的飞秒测量已经建立了一个明确的依赖空间尺度与事件多重性和粒子横向质量($m_T$)在重离子碰撞从$\sqrt(s_{NN}) \sim 2-200 GeV$。的$m_T$的依赖性被认为是从集体产生的,爆炸性的系统流,独立的测量探测,而多重性的依赖性反映了增加的空间范围的最终状态与减少碰撞参量。在高能强子和轻子碰撞中也有类似的质量依赖性,但在高能强子和轻子碰撞中,碰撞参量或集体流的概念有效性还不太清楚。我们专注于基本粒子碰撞的结果,确定在实验数据中看到的趋势,并将它们与重离子碰撞的结果进行比较。

英文摘要:

Femtoscopic measurements at a variety of facilities have established a clear dependence of spatial scales with event multiplicity and particle transverse mass ($m_T$) in heavy ion collisions from $\sqrt(s_{NN}) \sim 2-200 GeV$. The $m_T$-dependence is thought to arise from collective, explosive flow of the system, as probed by independent measurements, while the multiplicity dependence reflects the increased spatial extent of the final state with decreasing impact parameter. Qualitatively similar dependences have been reported from high energy hadron and lepton collisions, where the conceptual validity of an impact parameter or collective flow are less clear. We focus on results from elementary particle collisions, identify trends seen in the experimental data and compare them to those from heavy ion collisions.

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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