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arXiv 0907.3460nucl-ex
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用STAR研究200 GeV的p-p碰撞喷流性质

Exploring Jet Properties in p-p Collisions at 200 GeV with STAR

Helen Caines

摘要:

在真空和热QCD物质中,强子化的机制还没有很好的理解。对p-p碰撞中喷注碎裂为强子的精确表征,将有助于阐明强子化的基本过程,并为测量重离子碰撞中强子化的修正提供必要的参考。我们目前的测量碎片功能的不明粒子在喷流产生的p-p碰撞在200 GeV使用的STAR探测器在RHIC。比较了不同喷注重建算法的结果,包括分辨率参数的变化。结果发现,结果在很大程度上是不敏感的细节,在RHIC能量的射流发现算法。粒子生产内部和外部的这些重建射流将进行比较,以提高我们的理解软和硬粒子在RHIC能量的p-p事件的强子化机制。

英文摘要:

The mechanisms underlying hadronization are not well understood, both in vacuum and in hot QCD matter. Precise characterization of jet fragmentation to hadrons in p-p collisions will help elucidate the fundamental process of hadronization, and will serve as essential reference to measure the modification of hadronization in heavy ion collisions. We present measurements of fragmentation functions for unidentified particles in jets produced in p-p collisions at 200 GeV using the STAR detector at RHIC. The results from different jet reconstruction algorithms are compared, including variations of the resolution parameter. It is found that the results are largely insensitive to details of the jet-finding algorithm at RHIC energies. Particle production inside and outside of these reconstructed jets will be compared to improve our understanding of the hadronization mechanisms for soft and hard particles in p-p events at RHIC energies.

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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