Radiation effects in electroweak processes at current and future hadron colliders

在发现希格斯玻色子之后，精确的测量和高精度的计算对于揭示这种新粒子的所有特性是否符合标准模型的预期是至关重要的。除了在希格斯扇区本身获得的信息之外，对标准模型结构的关键约束是由对规范玻色子扇区的精确分析提供的。虽然在强相互作用方面所需的高阶微扰计算的地位是相当先进的，但电弱修正在过去受到的关注较少。然而，它们的影响在目前可获得的对撞机能量上是相当大的，并且预计在未来以更高能量运行的强子对撞机上将变得更加显著。有了这一建议，我们设想在强子对撞机中选择在现象学上特别重要的电弱过程来缩小这一差距。为此，我们计划开发蒙特卡罗程序，同时允许计算强和弱电校正及其与QCD和QED淋浴发电机的匹配。这将使我们能够对当前和未来强子对撞机的实验观测结果获得准确而现实的预测。利用我们的新工具，我们将进行详细的现象学研究，以量化不同能量状态下各种类型辐射效应的相互作用。

After the discovery of the Higgs boson accurate measurements confronted with high-precision calculations are essential to reveal whether all properties of this new particle are compatible with the expectations of the Standard Model. Complementary to information gained in the Higgs sector itself, crucial constraints on the structure of the Standard Model are provided by a precision analysis of the gauge boson sector. While the status of the required higher-order perturbative calculations in terms of the strong interaction is quite advanced, electroweak corrections have received less attention in the past. However, their impact can be considerable at currently accessible collider energies already, and is expected to become even more significant at future hadron colliders operating at yet higher energies. With this proposal we envisage to close that gap for a selection of phenomenologically particularly important electroweak processes at hadron colliders. For these we plan to develop Monte-Carlo programs that permit, at the same time, the computation of strong and electroweak corrections and their matching with QCD and QED shower generators. This will allow us to obtain accurate yet realistic predictions for experimentally accessible observables at current and future hadron colliders. With our new tools we will perform detailed phenomenological studies to quantify the interplay of various types of radiation effects in different energy regimes.