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arXiv 1012.2907nucl-ex
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RHIC的双强子关联

Di-hadron correlations at RHIC

Christine Nattrass

摘要:

双强子关联已被用于研究RHIC的喷流,并对介质的性质产生了丰富的见解。研究表明,高pT触发关联的近端峰值可以分解为两部分:类喷流关联和脊。类喷流关联在方位角和伪快度上都很窄,具有与真空碎裂相一致的性质,而脊在方位角上很窄,但在伪快度上很宽,并且与伪快度大致无关。的能量,系统和粒子组成的喷流相关和脊进行了讨论。数据表明,类喷流关联主要是由真空碎裂产生的。人们曾试图解释脊分量的产生来自复合、动量反冲和QCD磁场。然而,很少有模型试图定量计算的特点的山脊。丰富的数据应有助于区分海脊生产机制的模型。喷流的相关性和脊在LHC的研究的意义进行了讨论。

英文摘要:

Di-hadron correlations have been used to study jets at RHIC and have yielded rich insight into the properties of the medium. Studies show that the near-side peak of high-pT triggered correlations can be decomposed into two parts, a jet-like correlation and the ridge. The jet-like correlation is narrow in both azimuth and pseudorapidity and has properties consistent with vacuum fragmentation, while the ridge is narrow in azimuth but broad in pseudorapidity and roughly independent of pseudorapidity. The energy, system, and particle composition of the jet-like correlation and the ridge are discussed. Data indicate that the jet-like correlation is dominantly produced by vacuum fragmentation. Attempts have been made to explain the production of the ridge component as coming from recombination, momentum kicks, and QCD magnetic fields. However, few models have attempted to quantitatively calculate the characteristics of the ridge. The wealth of data should help distinguish models for the production mechanism of the ridge. Implications for studies of the jet-like correlation and the ridge at the LHC are 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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