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arXiv 1012.0054hep-ph
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双强子碎裂函数及其与横自旋研究的关系

Dihadron fragmentation functions and their relevance for transverse spin studies

A. Courtoy, A. Bacchetta, M. Radici

摘要:

双强子碎裂函数描述了一个夸克碎裂成两个强子和其他未检测到的强子的概率。特别地,所谓的干涉碎裂函数描述了夸克横向极化时双强子分布的方位不对称性。它们可以作为研究核子中夸克横度分布的工具。介绍了非极化和极化双强子碎裂函数的最新研究,并讨论了它们在研究横向自旋分布中的作用。

英文摘要:

Dihadron fragmentation functions describe the probability that a quark fragments into two hadrons plus other undetected hadrons. In particular, the so-called interference fragmentation functions describe the azimuthal asymmetry of the dihadron distribution when the quark is transversely polarized. They can be used as tools to probe the quark transversity distribution in the nucleon. Recent studies on unpolarized and polarized dihadron fragmentation functions are presented, and we discuss their role in giving insights into transverse spin distributions.

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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