Theoretical Studies in Electroweak and Hadronic Interactions

理论基本粒子物理学的研究将包括分析量子色动力学（QCD -将夸克和胶子结合形成普通质子和中子的强作用力），未来对撞机中可能出现的顶夸克和希格斯玻色子信号，在天体物理学感兴趣的情况下研究光子和中微子之间的相互作用，以及引力在粒子物理学中的作用。QCD的详细相互作用是非常复杂的。因此，为了深入了解这一理论，有必要研究其在具体过程中的作用。新技术将被用于研究在一系列能量尺度上的对撞机产生的重夸克，也将用于研究高能粒子的QCD散射。此外，还将研究QCD对对撞机顶夸克和希格斯玻色子产生和分析的影响。希格斯玻色子的数量以及它们的质量和电荷必须确定，以便充分理解质量的起源和基本粒子理论的潜在对称性。光子-中微子的相互作用只有在极端条件下才能被观测到，比如在早期宇宙或致密天体中发现的情况。了解这些相互作用可能会改变我们对残余中微子海的看法，或者改变重物体失去能量的方式。普通引力太弱，无法影响基本粒子的相互作用，但弦理论的最新发展表明，在高能碰撞中可以观察到一些引力效应。

Research in theoretical elementary particle physics will include analyses of Quantum ChromoDynamics (QCD - the strong force which binds quarks and gluons to form ordinaryprotons and neutrons), possible top quark and Higgs boson signals at future colliders, studies of the interactions between photons and neutrinos in situations of astrophysicalinterest, and the role of gravity in particle physics. The detailed interactions of QCD are very complex. Therefore, in order to gain insight into this theory it is essential to study its effects in specific processes. Newtechniques will be used to investigate the production of heavy quarks at colliders over a range of energy scales and also to study the QCD scattering of particles at very highenergies. In addition, the effects of QCD on the production and analyses of top quarks and Higgs bosons at colliders will be investigated. The number of Higgs bosons as well as their masses and charges must be determined in order to fully understand the origin of mass and the underlying symmetry of elementaryparticle theory. Photon-neutrino interactions are only appreciable under extreme conditions such as those found in the early universe or in compact astrophysical objects.Understanding these interactions may alter our view of the relic neutrino sea or the way in which heavy objects lose energy. Ordinary gravity is too weak to affect elementaryparticle interactions, but recent developments in string theory suggest that some gravitational effects could be observable in high energy collisions.