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arXiv 0705.3371nucl-ex
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RHIC的多奇异重子关联

Multi-strange baryon correlations at RHIC

Betty I. Abelev

摘要:

在RHIC STAR探测器获得的d+Au和Au+Au数据中观察到了多奇异重子方位角关联。我们提取了各种奇异粒子种类和触发点的同侧每触发点产额,但没有观察到任何种类依赖性。我们还报告观察的伸长率在δ-eta;方向的Xi相关峰,脊。通过比较d+Au和Au+Au数据的同侧产额,我们发现脊产额的存在大大提高了仅方位角Xi相关的同侧产额。我们还报告了第一次观察到一个强大的同侧峰的欧米茄重子触发方位角相关。

英文摘要:

Multi-strange baryon azimuthal correlations were observed in d+Au and Au+Au data taken by the STAR detector at RHIC. We extract the same-side per-trigger yields for a variety of strange particle species and trigger pt, but do not observe any species dependence. We also report the observation of an elongation in the Delta-eta; direction of the Xi correlation peak, the ridge. Comparing the same-side yields in d+Au and Au+Au data, we conclude that the same-side yield of the azimuthal-only Xi correlations is greatly enhanced by the ridge yield. We also report the first observation of a strong same-side peak in the Omega baryon triggered azimuthal correlations.

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