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arXiv 1412.3133hep-phnucl-th
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光锋组分夸克模型中的双重部分子关联

Double parton correlations in Light-Front constituent quark model

Matteo Rinaldi, Sergio Scopetta, Marco Traini, Vicente Vento

摘要:

双部分子分布函数(dPDF)是研究质子三维结构的一种工具。它们可以在高能质子-质子和质子核碰撞中测量,并编码关于质子内部部分子如何相互关联的信息。本文采用组分夸克模型研究了价夸克区的dPFDs,其中两粒子关联不需要任何附加的规定。这个框架可以理解的相关性的动力学起源,并澄清,其中的功能的结果,是模型独立的。将使用一个相对论性的光阵面计划,能够克服以前的计算的一些缺点。横向动量的相关性,由于确切的治疗的助推,预测和分析。自旋相关的作用也显示。由于该方法的协方差,dPDF的一些对称性被清楚地看到。对于价区,我们也完成了对模型结果的QCD演化的研究,由于良好的支撑性质,我们可以安全地进行研究。

英文摘要:

Double parton distribution functions (dPDF) represent a tool to explore the 3D proton structure. They can be measured in high energy proton-proton and proton nucleus collisions and encode information on how partons inside a proton are correlated among each other. dPFDs are studied here in the valence quark region, by means of a constituent quark model, where two particle correlations are present without any additional prescription. This framework allows to understand the dynamical origin of the correlations and to clarify which, among the features of the results, are model independent. Use will be made of a relativistic light-front scheme, able to overcome some drawbacks of the previous calculation. Transverse momentum correlations, due to the exact treatment of the boosts, are predicted and analyzed. The role of spin correlations is also shown. Due to the covariance of the approach, some symmetries of the dPDFs are seen unambigously. For the valence sector, the study of the QCD evolution of the model results, which can be performed safely thanks to the property of good support, has been also completed.

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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