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arXiv 0704.0966nucl-ex
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$\sqrt{s}$ = 200和410 GeV p+p碰撞中两粒子角关联的团簇性质

Cluster properties from two-particle angular correlations in p+p collisions at $\sqrt{s}$ = 200 and 410 GeV

B. Alver, the PHOBOS Collaboration

备注：
10 pages, 10 figures, submitted to Phys. Rev. C
发表信息：
Phys.Rev.C75:054913,2007
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摘要：

本文给出了质心能量为200和410 GeV的质子-质子碰撞中两粒子角关联的结果。相对论重离子对撞机上的PHOBOS实验对带电粒子有着独特的大覆盖范围，这使得有机会在短距离和长距离尺度上探索相关性。在这两种能量下，观察到$Δη$和$Δϕ$中复杂的二维相关结构。在一个独立的集团模型的短程关联的背景下，集团的大小和它的衰变宽度提取的两粒子赝快度关联函数和比较以前的测量质子-质子和质子-反质子碰撞，以及PYTHIA和HIJING预测。

英文摘要：

We present results on two-particle angular correlations in proton-proton collisions at center of mass energies of 200 and 410 GeV. The PHOBOS experiment at the Relativistic Heavy Ion Collider has a uniquely large coverage for charged particles, giving the opportunity to explore the correlations at both short- and long-range scales. At both energies, a complex two-dimensional correlation structure in $Δη$ and $Δϕ$ is observed. In the context of an independent cluster model of short-range correlations, the cluster size and its decay width are extracted from the two-particle pseudorapidity correlation function and compared with previous measurements in proton-proton and proton-antiproton collisions, as well as PYTHIA and HIJING predictions.

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