Electroweak radiative corrections for collider physics
Electroweak radiative corrections for collider physics
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DOI：
10.1016/j.physrep.2020.04.001
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发表时间：
2019-12
期刊：
影响因子：
--
通讯作者：
A. Denner;S. Dittmaier
中科院分区：
文献类型：
--
作者：
A. Denner;S. Dittmaier
当前粒子现象学的特点是粒子物理标准模型（SM）的预测与对撞机实验的所有结果惊人地一致，并且缺乏非标准物理的重要信号，尽管我们知道SM不可能是自然的终极理论。在这种情况下，以高精度的理论和实验相结合，是寻找超越SM的潜在物理痕迹的一个有希望的方向。在理论方面，计算强和弱电相互作用的辐射修正是这项任务的核心，这是一个在过去几十年里取得了巨大概念和技术进步的领域。本综述旨在对电弱校正领域进行连贯的介绍，并试图填补标准教科书知识与当前技术状况之间的文献空白。本文详细地回顾了SM及其微扰评价机制，特别强调了重整化、单环技术、现代振幅方法和工具、实际发射修正中红外奇点的分离、与碰撞中强子初始态或终态有关的电弱问题、量子场论中不稳定粒子的问题以及相应的实际解决方案。
Current particle phenomenology is characterized by the spectacular agreement of the predictions of the Standard Model of particle physics (SM) with all results from collider experiments and by the absence of significant signals of non-standard physics, despite the fact that we know that the SM cannot be the ultimate theory of nature. In this situation, confronting theory and experiment with high precision is a promising direction to look for potential traces of physics beyond the SM. On the theory side, the calculation of radiative corrections of the strong and electroweak interactions is at the heart of this task, a field that has seen tremendous conceptual and technical progress in the last decades. This review aims at a coherent introduction to the field ofelectroweak correctionsand tries to fill gaps in the literature between standard textbook knowledge and the current state of the art. The SM and the machinery for its perturbative evaluation are reviewed in detail, putting particular emphasis on renormalization, on one-loop techniques, on modern amplitude methods and tools, on the separation of infrared singularities in real-emission corrections, on electroweak issues connected with hadronic initial or final states in collisions, and on the issue of unstable particles in quantum field theory together with corresponding practical solutions.