Parton model description of quark and antiquark correlators and TMDs
Parton model description of quark and antiquark correlators and TMDs
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DOI：
10.1016/j.nuclphysb.2022.115947
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发表时间：
2022-06
影响因子：
2.8
通讯作者：
F. Aslan;S. Bastami;P. Schweitzer
中科院分区：
文献类型：
--
作者：
F. Aslan;S. Bastami;P. Schweitzer
模型研究对于理解和阐明横向动量相关部分子分布函数（TMD）的非微扰特性发挥着重要作用。 Parton 模型通常是一个有用的框架，也是首次探索 TMD 属性和描述可访问 TMD 的深层非弹性过程的起点。基于对帕顿模型概念的系统探索，我们调和了文献中关于帕顿模型中夸克相关器有 2 个独立结构的说法与有 3 个独立结构的说法，并解释了导致不同结论的基本假设。我们还系统地探索了反夸克相关器，并据我们所知，首次推导了所有 T-偶先导和次先导反夸克 TMD 的模型表达式。我们证明了该框架的一致性，可以在未来的研究中推广到更复杂的 TMD 建模。
Model studies play an important role for the understanding and elucidation of the nonperturbative properties of transverse momentum dependent parton distribution functions (TMDs). The parton model is often a helpful framework and starting point for first explorations of TMD properties and the description of deep-inelastic processes in which TMDs can be accessed. Based on a systematic exploration of the parton model concept, we reconcile the claims in literature that there are 2 independent structures in the quark correlator in the parton model vs the claim that there are 3, and explain the underlying assumptions leading to the different conclusions. We also systematically explore the antiquark correlator and, to the best of our knowledge, for the first time derive the model expressions for all T-even leading and subleading antiquark TMDs. We demonstrate the consistency of the framework which can be generalized in future studies for more sophisticated TMD modeling.