Quantum Chromodynamics, Electroweak Physics and Beyond

理论基本粒子物理学的研究将包括：(I)微扰量子色动力学框架内核子部分子结构的研究；(Ii)电弱相互作用对称性破缺的起源；以及(Iii)新物理的可观测特征，如超对称粒子和额外维度。部分子是观察到的核粒子的基本成分(即夸克和胶子)，如质子和中子。电弱相互作用对称性破缺与基本粒子质量的起源密切相关。新的物理场景，如超对称性和外延，如果被发现，可以将我们对极其成功的基本粒子物理标准模型的理解扩展到更深的水平。

Research in theoretical elementary particle physics will includestudies of: (i) the partonic structure of the nucleon within theframework of perturbative quantum chromodynamics, (ii) the origin ofelectroweak interaction symmetry breaking; and (iii) observable signaturesof new physics, such as supersymmetric particles and extra dimensions. Partonsare fundamental constituents (i.e. quarks and gluons) of observed nuclearparticles, such as protons and neutrons. Electroweak interaction symmetrybreaking is intimately related to the origin of masses of fundamentalparticles. New physics scenarios, such as supersymmetry and extradimensions, if discovered, could extend our understanding of the extremelysuccessful Standard Model of elementary particle physics to a much deeperlevel.