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Multiparticle production and quantum chromodynamics

机译:多粒子产生和量子色动力学

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摘要

The theory of strong interactions, quantum chromodynamics (QCD), is quite successful in predicting and describing many features of multiparticle production processes at high energies. In this paper, the general perturbative QCD approach to these processes (primarily e~+e~--annihilation) is briefly formulated, and associated problems are discussed. It is shown that analytical calculations at the parton level using a low-momentum cutoff are surprisingly adequate in describing experimental data on the final hadronic state in multiparticle production processes at high energies-even though the perturbative expansion parameter is not very small. More importantly, the perturbative QCD not only describes existing data but also predicts many qualitatively new and intriguing phenomena.
机译:强相互作用理论,量子色动力学(QCD),在预测和描述高能多粒子生产过程的许多特征方面非常成功。在本文中,简要介绍了对这些过程的一般摄动QCD方法(主要是e〜+ e〜an灭),并讨论了相关的问题。结果表明,使用低动量截止值在parton级进行的分析计算令人惊讶地足以描述高能多粒子生产过程中最终强子态的实验数据,即使微扰膨胀参数不是很小。更重要的是,扰动的QCD不仅描述了现有数据,而且还预测了许多定性的新奇有趣现象。

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