Electroweak Processes at NLO and NNLO Level

最近来自中微子振荡、暗物质和暗能量的证据表明，已有40年历史的粒子物理标准模型是不完整的，我们正处于一种新理论和新物理的门槛上。寻找新物理可能信号的一种方法是在较低能量下进行高精度实验，这可以提供多TeV尺度的间接物理途径，并对大型强子对撞机研究计划起到重要的补充作用。这项研究需要实验和理论两方面的努力，而新一代实验将需要从理论上达到新的精度。*在这项研究计划中，我们致力于将亚原子物理计算提升到一个新的水平，并利用新的半自动符号计算方法为高精度实验提供最精确和可靠的理论输入。我们的创新计算模型可用于广泛的应用，包括对轻子-轻子和轻子-强子散射的弱电弱辐射修正，对介子电产生进行建模，以及评估强子的电磁动力学极化率。该计划还将培养新一代科学家，使加拿大在未来几十年内保持其在世界级研究领域的领先地位。

Recent evidence coming from neutrino oscillation, dark matter and dark energy shows that the 40-year old Standard Model of Particle Physics incomplete, and that we are at the threshold of a new theory and “New Physics.” One way to look for possible signals of new physics is with high-precision experiments at lower energy which can provide indirect access to physics at multi-TeV scales and play an important complementary role to the Large Hadron Collider research program. This research requires both experimental and theoretical effort, and the new-generation experiments will need a new degree of precision from theory. ****** In this research program, we strive to bring subatomic physics computations to the next level and to provide the most precise and reliable theoretical input for the high-precision experiments by taking advantage of the new semi-automated symbolic computing methods. Our innovative computational models can be used for a wide range of applications, including next-to-leading and next-to-next-to-leading electroweak radiative corrections for lepton-lepton and lepton-hadron scattering, modeling pion electroproduction, and evaluating electric and magnetic dynamical polarizabilities for hadrons. The program will also allow for training a new generation of scientists enabling Canada to maintain its position at the forefront of world-class research for decades to come.***