arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1408.5463hep-phhep-thnucl-th
收藏

强子的非微扰结构

The Nonperturbative Structure of Hadrons

T. J. Hobbs

摘要:

在这篇论文中,我们探讨了一系列不同的问题,这些问题都是在动量低于QCD禁闭标度的强子的固有非微扰结构中发生的。在这样做时,我们主要寻求更好地控制强相互作用物质的部分子结构,特别是因为这涉及到非微扰效应,既激励和复杂的实验-特别是DIS;除其他外,这些考虑需要在$Q^2$,动力学更高的扭曲效应,强子质量校正子领先的校正。我们还提出了新的计算的几个例子的味对称性破坏,这也起源于在低能量的QCD的长距离属性。此外,我们概述了一个最近发展的模型,框架作为一个强子有效的理论服从QCD的整体分析,这提供了新的见解非微扰重夸克的核子的可能性。这个模型可以扩展到较轻的介子的规模,我们评估的可访问性的相互作用的π介子的结构功能在由此产生的框架。

英文摘要:

In this thesis we explore a diverse array of issues that strike at the inherently nonperturbative structure of hadrons at momenta below the QCD confinement scale. In so doing, we mainly seek a better control over the partonic substructure of strongly-interacting matter, especially as this relates to the nonperturbative effects that both motivate and complicate experiments --- particularly DIS; among others, such considerations entail sub-leading corrections in $Q^2$, dynamical higher twist effects, and hadron mass corrections. We also present novel calculations of several examples of flavor symmetry violation, which also originates in the long-distance properties of QCD at low energy. Moreover, we outline a recently developed model, framed as a hadronic effective theory amenable to QCD global analysis, which provides new insights into the possibility of nonperturbative heavy quarks in the nucleon. This model can be extended to the scale of the lighter mesons, and we assess the accessibility of the structure function of the interacting pion in the resulting framework.

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。

↑