Top Quark and Higgs Physics, and Two-Loop Calculations

这一建议要求支持一个计划的唯象方面的QCD应用于Tevatron和LHC碰撞的研究。目的是计算研究顶夸克所需的截面和微分分布，并寻找希格斯玻色子和超对称粒子。在QCD中，对首阶计算的修正可以高达50%或更多，因此，为了发现标准模型之外的新粒子和新物理，计算高阶修正是必不可少的，以便获得标准模型的最精确的理论预测。与这些预测的偏差可以被视为新物理学的证据。这种类型的现象学是美国在大型强子对撞机及其相关探测器上的巨大投资的物理回报最大化的努力的一个重要组成部分。这一建议的更广泛影响涉及理论家和实验家在准备实验和分析所获得的数据时的密切互动。还有很强的教育联系，因为PI将让本科生参与研究，特别是那些需要大规模计算的领域。该大学已经建立了一个指导计划，以支持参与研究的学生，这一建议与该计划非常匹配。

This proposal requests support for a program of research on the phenomenological aspects of QCD applied to Tevatron and LHC collisions. The aim is to calculate cross-sections and differential distributions that are needed for the study of the top quark, and searches for the Higgs boson and supesymmetric particles. Corrections to leading order calculations in QCD can be as large as 50% or more and so, for the discovery of new particles and new physics beyond the standard model, it is essential to calculate higher order corrections in order to obtain the most precise theoretical predictions of the standard model. Deviations from these predictions can then be viewed with confidence as evidence for new physics. This type of phenomenology is an essential ingredient in the effort to maximise the physics return on the large investment by the U.S. in the LHC and its associated detectors. The broader impacts of this proposal involve the close interaction between theorists and experimentalists in the preparation of experiments and the analysis of the data obtained. There are also strong educational links since the PI will involve undergraduate students in the research, especially those areas that require large scale computing. The university has established a mentoring program for supporting students involved in research, and this proposal matches very well with that program.