arXiv 0810.42552008-10hep-ph

部分子的强子化

The hadronization of partons

Simon Albino

发表信息：: Rev.Mod.Phys.82:2489-2556,2010
DOI：: 10.1103/RevModPhys.82.2489

摘要：

本文综述了在因子分解定理框架下用碎裂函数描述非偏振光强子的产生。我们总结了因子分解的数量到微扰计算量和这些普遍的碎裂功能，然后讨论了一些改进超出标准的固定顺序的方法。我们讨论了轻带电和中性强子的碎裂函数的提取，使用这些理论工具，通过全球拟合的实验数据，从反应在不同的对撞机，特别是从精确的e+e-反应在LEP，和随后的成功预测的其他实验数据，如收集的数据在HERA，Tevatron和RHIC从这些拟合的碎裂函数允许的因式分解普适性。这些全局拟合也对alpha_s（M_Z）施加了竞争约束。重点放在需要从ep和pp（pbar）反应中的强子物种被确定，以约束每个夸克味和强子物种的单独的碎裂功能的准确数据。

英文摘要：

We review the description of inclusive single unpolarized light hadron production using fragmentation functions in the framework of the factorization theorem. We summarize the factorization of quantities into perturbatively calculable quantities and these universal fragmentation functions, and then discuss some improvements beyond the standard fixed order approach. We discuss the extraction of fragmentation functions for light charged and neutral hadrons using these theoretical tools through global fits to experimental data from reactions at various colliders, in particular from accurate e+e- reactions at LEP, and the subsequent successful predictions of other experimental data, such as data gathered at HERA, the Tevatron and RHIC from these fitted fragmentation functions as allowed by factorization universality. These global fits also impose competitive constraints on alpha_s(M_Z). Emphasis is placed on the need for accurate data from ep and pp(pbar) reactions in which the hadron species is identified in order to constrain the separate fragmentation functions of each quark flavour and hadron species.

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