Resummation of QCD corrections for hard processes at the LHC

LHC 硬过程 QCD 校正摘要

• 批准号: 443850114
• 负责人: Professor Dr. Sven-Olaf Moch
• 金额: --
• 依托单位: Institute of Mathematical Sciences
• 依托单位国家: 德国
• 项目类别: Research Grants
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/443850114?language=en
• 关键词: Resummation; QCD; corrections; hard; processes

The Large Hadron Collider, being a hadronic machine, has an immense potential to test the Standard Model to unprecedented accuracy and also to probe physics beyond the Standard Model. Precision studies at the Large Hadron Collider are one of the most important goals in high energy physics. In order to make the detailed comparison with the experimental results, higher order predictions from perturbative Quantum Chromodynamics play important role. We propose to undertake the task of computing higher order radiative corrections from Quantum Chromodynamics to the production of pair of vector bosons such as Zs and Ws. In particular, we will focus on the differential distributions at second order in perturbation theory. We will also systematically include threshold effects in particular for the transverse momentum distributions. This requires setting up a formalism as well as computation of various universal anomalous dimensions in perturbation theory. Our predictions will be important to understand the results at the Large Hadron Collider.

大型强子对撞机是一台强子机器，具有巨大的潜力来测试标准模型，达到前所未有的精度，并探索标准模型以外的物理。大型强子对撞机的精确研究是高能物理最重要的目标之一。为了与实验结果进行详细的比较，微扰量子色动力学的高阶预测起着重要的作用。我们建议承担从量子色动力学到矢量玻色子对如Zs和Ws的产生的高阶辐射修正计算任务。特别地，我们将集中讨论微扰理论中的二阶微分分布。我们还将系统地包括阈值效应，特别是横向动量分布的阈值效应。这就要求在微扰理论中建立一种形式，并计算各种普适反常维度。我们的预测对于理解大型强子对撞机的结果很重要。