Precision Theory Predictions for Higgs and New-Physics Measurements at the LHC

粒子物理学的标准模型成功地描述了迄今为止在实验室实验中观察到的所有粒子现象。在欧洲核子研究中心的大型强子对撞机（LHC）进行实验的一个主要目标是发现希格斯粒子，它是标准模型的重要组成部分，但尚未被直接观察到。另一个目标是在标准模型之外寻找新的重粒子，从暗物质的天体物理观测和强大的理论动机来看，它们的存在是预期的。在大型强子对撞机的质子-质子碰撞中产生的希格斯粒子和其他重粒子是通过它们的衰变产物来识别的，这些衰变产物产生了一个特征特征，涉及探测器中一般准直的粒子射流。要获得精确的实验限制或测量希格斯粒子和新物理粒子的质量和耦合，需要对具有特定数量的此类喷流的信号和背景过程进行理论预测。艾米-诺特小组的目标是对这些过程的必要横截面进行精确的理论计算。这就要求开发和应用新的场论方法，使大扰动修正的解析恢复和非扰动效应的研究以及它们与数值模拟的结合成为可能。

The Standard Model of particle physics successfully describes all particle phenomena observed in laboratory experiments so far. A main goal of the experiments at the Large Hadron Collider (LHC) at CERN is the discovery of the Higgs particle, which is an essential part of the Standard Model but has not yet been observed directly. Another goal is the search for new heavy particles outside the Standard Model, whose existence is expected from the astrophysical observation of dark matter as well as from strong theoretical motivations. Higgs and other heavy particles produced in proton-proton collisions at the LHC are identified by their decay products, which produce a characteristic signature involving in general collimated jets of particles in the detector. Obtaining precise experimental limits or measurements of the masses and couplings of the Higgs and new-physics particles requires theoretical predictions for signal and background processes with a specific number of such jets. The objective of the Emmy-Noether group is the precise theoretical calculation of the necessary cross sections for such processes. This requires the development and application of new field-theoretic methods that allow the analytic resummation of large perturbative corrections and the study of nonperturbative effects, and their combination with numerical simulations.